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Indian Highways Volume : 47 Number : 5 ● MAY, 2019 ● ISSN 0376-7256 Indian Roads Congress Founded : On 10th December, 1934 Contents From the Editor's Desk From the Desk of Guest Editor Advertisements 7, 8, 9, 10 & 50 Announcement 36 4-5 6 Technical Papers Flexible Pavement Reinforced with Planer Reinforcement - Experimental Study By G Narendra Goud & B Umashankar 11 Impact of Photo Pollution due to Over-Illumination & Current Trends in Highway Lighting By Bharat Sojitra & Sunil Singh Gangwar 19 Need to Lay Down Criteria for Fixing of Road Side Furniture with reference to ‘Distance Between Centre of Front Wheels and Bumper (front overhang of vehicles)’ in Urban Areas By Kuldeep Singh, Amarjeet Singh & Arun Kumar Sharma 25 Application of Ministry of Road Transport & Highways Circulars for Pavement Option Studies 29 with Case Studies By Swapan Bagui & Atasi Das General Report on Road Research Work Done in India 37 MoRT&H Circular 43 List of Irc Accredited new Materials/Techniques/Equipment/ Products 48 FEEDBACK Suggestion/Observation on editorial and Technical Papers are welcome and may be sent to IRC Secretariat on Email-indhighways@gmail.com/dd.irc-morth@gov.in Publisher & Editor: S.K. Nirmal, Secretary General, IRC E-mail: secygen.irc@gov.in Headquarter: IRC Bhawan, Kama Koti Marg, Sector-6, R.K. Puram, New Delhi-110 022. Phone No.: +91-11-26171548 (Admn.), 23387140 & 23384543 (Membership), 23387759 (Sale), 26185273 (Tech. Papers, Indian Highways and Tech. Committees) No part of this publication may be reproduced by any means without prior written permission from the Secretary General, IRC. The responsibility of the contents and the opinions expressed in Indian Highways is exclusively of the author(s) concerned. IRC and the Editor disclaim responsibility and liability for any statements or opinion, originality of contents and of any copyright violations by the authors. The opinion expressed in the papers and contents published in the Indian Highways do not necessarily represent the views of the Editor or IRC. `20 Printed at: M/s Aravali Printers & Publishers Pvt. Ltd., New Delhi-110 020 INDIAN HIGHWAYS MAY 2019 3 FROM THE EDITOR’S DESK USE OF APPROPRIATE TECHNOLOGY IN DEVELOPMENT OF ROADS The choice of the appropriate construction method for a work is governed by several factors such as terrain, climate, available resources, technical feasibility for the nature of operations and relative economy. Once a road project has been prepared, the prime objective of the Site Engineer will be to complete the construction to meet the stipulated requirements at the minimum cost and within the time schedule. Fulfilment of this objective will involve the choice of the appropriate construction technology which is economically viable and technically suitable for the type of work and for which the necessary resources are readily available or can be made available in time. In the interest of better planning of works at site and economical execution of highway projects, the choice of appropriate construction methods and technologies under different situations is required for optimizing the cost, improving the efficiency and productivity. Some of these methods and technologies have been mentioned hereunder. Use of Manual Method for Concrete Roads Design requirement for construction of concrete roads for NHs, are different from that required, for concrete road at toll booths, low volume roads in villages, other district roads, at roundabouts and at-grade junctions in cities. For low volume village roads the requirement is a well-drained riding surface of width 3.75 to 5.5 m. For other district roads width of road is 5.5 m to 7.0 m. For road at junctions the requirement is width of road and adequate camber and the pavement has to withstand stresses due to axle load of vehicles etc. For such roads there is a need to use manual methods of construction. In manual methods, the mixing of concrete is in a small mixer located at site and don’t require plasticizers and cement set retarders, no machinery for laying of concrete. The cost of 1m3 of PQC is low due to absence of machinery component. Roughness value of surface is not a criteria for acceptance of work. For execution of all such works the essential requirement is thickness of concrete road. The thickness can be achieved by manual methods of laying. Keeping in view what is expected of furnished road work it will be appropriate to use manual method of construction. Use of Arch Bridges For construction of bridges, if height of embankment is sufficient to accommodate arch bridges then there is a need to adopt such structures from aesthetic considerations. The load in arch structure is transferred to mother earth by development of compressive stresses in arch structure. Arch bridges are more durable and require low maintenance. The construction of arch bridges can be by using bricks, cement, steel, sand and aggregates. Know how for construction of arches is available in the country since long. There is a need to develop standard drawings for arch bridges for various 4 INDIAN HIGHWAYS MAY 2019 FROM THE EDITOR’S DESK spans both for precast concrete and cast in situ arches. With availability of standard drawings and specifications the consultants will be encouraged to recommend arch bridges in DPR’s. Use of Local Soil and Marginal Stone Aggregates For construction of roads, the stone metal and chips meeting the specification is used in the works. In case, the material does not meet the specification then it is not possible to use such materials. Stabilizers are now available which may be used to improve the strength of local soil and aggregates. Such soil stabilizers are accredited by IRC for use in pilot projects. To make use of locally available materials, MoRT&H had carried out a countrywide study under research scheme R1 in 1980s. There is an urgent need to update this important study. There is also a need to develop specifications for the stabilized soil and unconventional materials in pavement layers. Modern Computer based Asset Management Traditional system of repair by departmental road gangs at project level was workable when length of road and volume of traffic was low. Now with the increase in the length of roads, number of bridges and speed of traffic in network, a need has arisen to use survey vehicles for condition assessment of roads and to prepare road inventory. The data is stored in computers. With the availability of actual road condition and traffic input, it is possible to prepare realistic repair proposals and to rationally prioritize roads for taking up repairs under annual budget and other programmes. In this system there is a transparency at all stages of work. The repair estimate is prepared by qualified consultants using computer software. Modern Computer based Asset management needs to be developed in various states and at national level . Thus, for any construction work, a broad spectrum of methods is available with the labor-intensive and equipment-intensive methods falling at either extremes and the intermediate methods falling inbetween. In the choice of the most appropriate method(s) for road construction projects, economic viability among the technically feasible methods emerges as the most important parameter. An objective exercise for evaluating this parameter will require realistic productivity norms of the various methods under different site conditions so as to find out most appropriate method/technology. In this regard the existing relevant IRC Guidelines IRC:SP:24 “Guidelines on the Choice and Planning of Appropriate Technology in Road Construction” is presently under revision. Any suggestion and feedback on the same is welcome. (Sanjay Kumar Nirmal) Secretary General INDIAN HIGHWAYS MAY 2019 5 From the Desk of Guest Editor, DG (RD) & SS MoRT&H Sustainable Development Communication network and more particularly road infra-structure is pre-requisite for economic and social development of the Nation and therefore its development assumes the highest priority. However, at the same time, it is also important to ensure sustainable development including protection of environment and maintaining ecological balance. Development of Road Infrastructure is one of the major important activity for ensuring communication among societies, districts, economic and industrial hubs. However, very often, when aligning Road network we come across number of ecologically sensitive area, wild life sanctuaries and other important places of archaeological and cultural importance and other sensitive areas which also need to be protected. While aligning the highway in the first instance, alignment through these areas has to be avoided and if unavoidable all necessary clearances from the concerned authorities may be obtained before finalising the alignment. This is of utmost importance to ensure timely completion of projects, reduction in time & cost overruns and reaping social and economic benefits besides revenue generation by tolling. During recent reviews it is observed that number of projects are stuck up because of alignment of the highway passing through such ecologically sensitive area where proper attention for seeking environmental clearances from the concerned authority of Ministry of Environment & Forests was not paid and requisite land acquisition not done. These projects attracted intervention from National Green Tribunal and subsequently in the Courts and the projects are still to take off. This is happening in case of highways passing through protected forests and eco-sensitive zones. Number of projects have been sanctioned and awarded without seeking clearance from the forest authorities/CRZ clearance and now the projects are getting delayed. Further the forest authorities has refused to allow widening/further development of the road passing through the forest area except for its strengthening through bituminous layers. This is affecting the project completion besides attracting avoidable cost over-run due to change of scope. Looking to these past experiences, it is more important to seek such clearances before sanction of the projects and in any case before award of work. Such an eco-system is not sustainable which is draining our scarce resources and need urgent correction by putting adequate attention in planning and preconstruction activities. Ministry of Environment & Forest has brought out handbook of guidelines for effective and transparent implementation of the provisions of Forest (conservation) Act, 1980 which is applicable w.e.f. 8th March, 2019. These may invariably be complied which are available on website www.parivesh.nic.in. Further, MoEF has also brought out guidelines for development of stretches passing through the wild life sanctuaries for mitigating the adverse effect which are available at the website of the MoEF and may scrupulously be followed. It is also important to bring out the cost benefit analysis of aligning the highway through sensitive area vs. avoiding these areas, bringing out socio-economic advantage against the minor adverse impact on the environment. After all, development has to continue to sustain the economic and social development of the Country. Only emphasising on one aspect would not be desirable as it will lead to economic imbalances leading to socio political issues. (I.K. Pandey) 6 INDIAN HIGHWAYS MAY 2019 ADVERTISEMENT APRIL 8–14 2019, MUNICH Visit us at Booth FS.909 OUTPUT AND EASY OPERATION AMMANN ARX 91 TANDEM ROLLER The Ammann ARX 91 Tandem Roller is built to help operators of all experience levels succeed. The multifunction display enables intuitive machine control, while the machine design improves visibility – and keeps the jobsite safe. Of course compaction output matters, too, and you get it with the ARX 91. The roller features a heavy-duty, two-stage vibrator and effortless adjustment of amplitude and frequency. Easy access to service points makes maintenance quick and cost effective. Ammann India Private Ltd., Plot No.2,143,144, AT - Ditasan, Post - Jagudan, State Highway, Ditasan, Mehsana, Gujarat, PIN Code: 382710 Phone + 91 27 626 62 200, Fax + 91 27 626 62 222, ankur.tiwari@ammann-group.com For additional product information and services please visit : www.ammann.com PMP-2235-00-EN | © Ammann Group INDIAN HIGHWAYS MAY 2019 7 ADVERTISEMENT 8 INDIAN HIGHWAYS MAY 2019 ADVERTISEMENT ADVERTISEMENT ADVERTISEMENT INDIAN HIGHWAYS MAY 2019 9 ADVERTISEMENT 10 INDIAN HIGHWAYS MAY 2019 TECHNICAL PAPER Flexible Pavement Reinforced with Planer Reinforcement Experimental Study G Narendra Goud1 B Umashankar2 Abstract Reinforcing flexible pavement with planer reinforcement in the form of geogrid and Hexagonal Steel Wire Mesh (HSWM) in flexible pavements can improve their performance compared to unreinforced pavements. Quality aggregates for constructing base and subbase layers of pavements are not readily available at all the construction sites and the introduction of reinforcement can provide a sustainable solution in such sites. In this study, large-scale model experiments are performed to obtain (a) load-settlement response of reinforced flexible pavements, and (b) interface properties of reinforcement pavement base/subbase materials. The load improvement factor of reinforced pavement with respect to unreinforced pavement can be used in the design of reinforced flexible pavements. While the interaction coefficients of reinforcement with pavement materials can be used in numerical modeling of reinforced pavement systems. The load improvement factors are found to vary from 1.1 to 1.9 for the two reinforcement types considered in the study corresponding to different settlement ratios. The interaction coefficients range from 0.73 to 1.45 for geogrid and HSWM reinforced interfaces under normal stresses ranging from 30 kPa to 90 kPa. The interface shear modulus of different interfaces considered in this study range from about 19,773 kPa/m to 57,337 kPa/m corresponding to a normal stress equal to 90 kPa. 1. Introduction Roads are one of the major infrastructure facility playing a vital role in improving the socio-economic status of any country and also it is one of the major consumers of the construction materials. Flexible pavements constitute a major portion of Indian road network, the reasons being ease of construction and comfortable riding quality. Improving the performance of flexible pavements to sustain heavy traffic loading and traffic flow, especially on soft soil subgrades under severe climatic conditions, has always been a challenging task. However, evolving alternative construction techniques and materials keeps the hope of civil engineers to cope up with the requirements of the society. One of the alternative construction technique to improve the pavement life or to consume reduced quantities of construction material for same performance is to use reinforcement in flexible pavements. Studies by researchers Perkins (1999), Zornberg et al. (2008), Chen et al. (2009), Palmeira and Antunes (2010), Latha et al. (2010), and Al-Qadi, et al. (2003) show that reinforcing the flexible pavement with the planer reinforcement in the form of geogrid and Hexagonal Steel Wire Mesh (HSWM) can improve the performance compared to unreinforced pavements. Steel-wire mesh or geosynthetic reinforcement can be installed within the subbase or base materials. In recent years, it has become a common practice to attend to asphalt pavement rehabilitation through milling and recycling technique and placement of steel-wire-mesh within the asphalt layers or at the interface of bound and unbound layers can severely hinder the pavement rehabilitation process. Very limited studies are available on reinforcing the base or subbase pavement layers using steel-wire-mesh reinforcement. Quality aggregates for constructing base and subbase layers of pavements are not readily available at all construction sites and the introduction of reinforcement can provide a sustainable solution in such sites. Fig. 1 shows the cost to the agency on the x-axis and the achievable knowledge about pavement performance on the y-axis in relative terms with respect to different approaches with which pavements can be studied. Performance studies of the constructed pavements in the field, study of test roads constructed especially to generate performance data, and accelerated pavement testing of 1 Assistant Professor, Dept. of CE-MVSR Engg. College, and Doctoral Student, Dept. of Civil Engineering, IIT- Hyderabad, Telangana, E-mail: gnarendragoud@gmail.com 2 ssociate Professor, Department of Civil Engineering, Indian Institute of Technology Hyderabad, Telangana A E-mail: buma@iith.ac.in INDIAN HIGHWAYS MAY 2019 11 TECHNICAL PAPER full-scale pavements prove to be the best and reliable approaches to study the performance of the pavements with new materials or alternate materials, however, the study requires expensive budget allocations and within reasonable budget, time and effort, one of the reliable ways to study and evaluate the benefits of reinforcing the pavements is large-scale laboratory experiments. Many researchers used large-scale laboratory experiments to generate performance related data to design pavement structure. In this study, large-scale model experiments are performed to obtain (a) load-settlement response of reinforced flexible pavements, and (b) interface properties of reinforcement-pavement base/subbase materials. Table 1 presents the properties and Fig. 3 (a), (b), (c) and (d) provide the photographs of different reinforcing materials used in this study. Fig. 2 Tensile Strength-Elongation Behavior of Different Reinforcing Materials (Modified after Asphalt Academy TG 3 2008) Table 1 Properties of reinforcing materials Material Property Fig. 1 Financial Investment by Agency and Associated Knowledge about Pavement Performance (adapted from Hu-go et al. 1991) 2. Planar reinforcement The flexible pavements may be reinforced using twodimensional reinforcement such as geogrids, or threedimensional reinforcement such as geocell, or combination of both geogrid and geocell in the form of basal reinforcement to enhance the performance or to reduce the base layer thickness, uncompromising the required level of performance. The mechanisms through which beneficial effects of reinforcement is realized in flexible pavements are described by Perkins (1997). Fig. 2 shows the expected tensile behavior of different materials potentially useful as reinforcing material. Perkins (1999) found that the improvement increases with increase in geosynthetic stiffness. Asphalt academy TG 3 (2008) recommends use of stiff reinforcing materials exhibiting the steeper stresselongation behavior. In the present study, three types of geogrids made up of polypropylene and a Hexagonal Steel Wire Mesh (HSWM) are selected as reinforcing materials to understand the behavior when the gradually applied load is normal to the pavement structure and also when the shear load is applied in a large-scale reinforced pavement system. 12 INDIAN HIGHWAYS MAY 2019 Material type GG1 GG2 GG3 HSWM Aperture size / Mesh opening, mm 31 40 66 105 Percent open area, % --- 84 84 91 Tensile strength(MD/ CMD*), kN/m 40/32 20/17 23/22 380-550 kPa* Rib thickness (MD/ CMD), mm 0.85 2.4/1.0 2.1/0.9 --- Rib width (MD/CMD), mm --- 2.4/3.7 4.4/5.6 --- Diameter of rod (wire mesh /transverse), mm --- --- --- 2.4/4.4 * As per manufacturers datasheet Fig. 3 (a) GG1 Photographs of the Reinforcing Materials TECHNICAL PAPER 3.Large-scale model experiment The performance of reinforced and unreinforced pavement structure examined through Large-Scale Model Experimental (LSME) studies. To model a full pavement structure or may be part of it at prototype scale in a manner that resembles field conditions as practical as possible the LSME is devised. 3.1Materials used in LSME Fig. 3 (a) GG2 Photographs of the Reinforcing Materials In this study, unpaved pavement structure overlying a medium-stiff subgrade was considered. Subgrade was prepared using locally available river sand. The maximum density of sand was found to be equal to 1.78 g/cc using the vibratory compaction method. The Coefficient of Curvature, Cc, and the Coefficient of Uniformity, Cu, were equal to 1.13 and 1.89, respectively. As per the Unified Soil Classification System (USCS) it is classified as poorly-graded sand (SP). To prepare a strong aggregate base layer overlying a sand layer, locally available crushed aggregates of average size equal to 6 mm were used above the sand subgrade layer. The details of physical properties of the reinforcement (Fig. 3 (a) GG1 and Fig. 3 (d) HSWM) used in this study are presented in Table 1. 3.2Experimental Test Setup and Preparation of the Pavement Section Fig. 3 (a) GG3 Photographs of the Reinforcing Materials Fig. 3 (d) HSWM Photographs of the Reinforcing Materials Abu-Farsakh et al. (2014) used a test tank of 1.5 m long, 0.91 m width and 0.91 m depth applied static load on the pavement section through a plate of 190 mm diameter, and Montanelli et al. (1997) used a test tank of 0.9 m x 0.9 m in cross section to apply a repeated load through 300 mm diameter plate to study the behavior of geogrid reinforced pavement. In the present study, a test chamber of dimensions equal to 1m x 1m x 1m was used to study the behavior of model pavement under 150 mm diameter circular plate. Loading was applied through a computercontrolled, servo-hydraulic actuator of 100 kN capacity. The actuator was attached to a reaction frame with a clearance height equal to 3.5 m. The detailed test bed preparation procedure has been explained in Hariprasad and Umashankar (2015). This method of sample preparation was found to produce uniform sand samples inside the test tank. The compaction of aggregates was carried out by placing the aggregates in a single layer of 100-mm thick and compacted to a relative density of 70%. Fig. 4 shows the schematic diagram of reinforced pavement structure prepared in the laboratory. The thickness of the aggregate base layer (H1) and sandy soil subgrade (H2) was kept as 100 mm and 800 mm respectively. The tests were conducted in a displacement-controlled mode keeping a INDIAN HIGHWAYS MAY 2019 13 TECHNICAL PAPER rate of displacement of 1mm per minute, and the static loading was discontinued at a displacement equal to 50 mm keeping equipment limitations and field deformations in mind. The load-displacement response was obtained for the following three test cases: a) Unreinforced aggregate base layer overlying a sandy soil subgrade, b) Biaxial geogrid (GG1)-reinforced aggregate base layer overlying a sandy soil subgrade, and c) Aggregate base layer reinforced with HSWM overlying a sandy soil having reinforcement placed at optimum depth ratio (dr/B). higher at higher settlement ratios for both the reinforcement types confirming the mobilization of reinforcing effect at higher pavement rut depth. Load improvement factor ranges from 1.4 to 1.9 and 1.1 to 1.7 for HSWM and geogrid (GG1) reinforced pavement sections, respectively. Abu-Farsakh et al. (2014) performed studies on pavement sections reinforced with a single layer of reinforcement and reported that load improvement factors ranged from 1.04 to 1.28 at a settlement ratio of 26% for different types of geogrids considered in their study. The findings from the present study indicate that HSWM reinforcement can also be a potential material to contribute towards the reduction in the pavement crust thickness, construction, rehabilitation, and maintenance costs of asphalt pavement layers, leading to the provision of sustainable road infrastructure. Fig. 4 Schematic Diagram of the Test bed 3.3 Results and Discussion Fig. 5 shows the variation of bearing pressure under the circular plate with respect to the settlement for the three cases, one with unreinforced section and others with geogrid and hexagonal steel-wire-mesh- reinforced pavement sections. For the case of unreinforced pavement section, a peak bearing pressure equal to 403 kPa is reached within footing settlement of 25 mm followed by a plateau in the load-settlement behavior. While no such peak behavior in the load-settlement behavior was noticed for the reinforced pavement sections (both GG1 and HSWM) and the load was found to increase continuously with the settlement for footing settlements within 50 mm. Load improvement factors are obtained for reinforced layered system corresponding to various settlement ratios. Load improvement factor (If ) is defined as (1) where, qr is the bearing pressure under the footing resting on the reinforced layered system at a given settlement, s, and qo is the bearing pressure under the footing resting on the unreinforced layered system at the same footing settlement. Fig. 6 shows the variation in load improvement factor with respect to different settlement ratios for both GG1 and HSWM reinforcements. The improvement was found to be 14 INDIAN HIGHWAYS MAY 2019 Fig. 5 Variation of Bearing pressure with settlement: Effect of reinforcement types for H1/B=0.66, and dr/B=0.45: Fig. 6 Variation of load improvement factor with settlement ratio 4.Large-scale direct shear testing of pavement materials To model the reinforced pavement system, the shear TECHNICAL PAPER strength and the interface shear strength of pavement material and reinforcement is one of the key input parameter. Many research studies are available in the literature on the shear behavior of sands using direct shear apparatus, however, studies on the interaction of the HSWM reinforcement with the unbound granular pavement materials are very limited. The properties of fill material–reinforcement interface count on various factors such as the mechanism of interaction between soil and reinforcement, the physical and mechanical properties of soil, and properties of the reinforcement. The soilreinforcement interaction mode with the interface elements may be pullout or direct shear. Analysis of reinforced embankment over soft soil by Bergado et al. (2003) using numerical method provides the details of interaction mode of the elements as pullout or direct shear type (as shown in Fig. 7). They observed that most of the elements are in the direct shear type of interaction mode, thus direct shear is more predominant in comparison with that of pull-out mode under working-stress condition. Hence in this study, large size direct shear apparatus is used to examine the interface shear properties of reinforcement and fill materials. Rural Roads were adopted for Gravel Surface (GS) and Gravel Base (GB) materials used in this study. To meet the required gradation as per the specification, different sizes of crushed aggregate were blended suitably. The maximum size of aggregate in GB and GS was equal to 37.5 mm and 26.5 mm respectively. Fig. 8 shows the gradation curves of subgrade soil, GS, and GB. Modified compaction energy was applied in accordance with ASTM D1557 to find the optimum moisture content and maximum dry unit weight of the GS and GB materials and are found to be equal to 8.7%, 21.6 kN/m3 and 7.7%, 22.6 kN/m3 respectively. Fig. 9 shows the compaction curves of GS, GB and subgrade soil. Fig. 8 Gradation Curves of Subgrade, GB, and GS Fig. 7 Directions of Interface Shear Stresses Indicating Appropriate Soil-Reinforcement Interaction Modes Adopted from Bergado et al. (2003) 4.1Materials Used for Large-Scale Direct Shear Testing The local soil near the construction site of IIT Hyderabad, Kandi campus was collected and investigated for various properties to use it as subgrade for large-scale direct shear tests. The liquid limit, plastic limit, free swell index, maximum dry unit weight, optimum moisture content and CBR of soil found to be 37%, 13.2%, 25%, 18.4 kN/m3, 13.5%, and 3.2% respectively. Standard Proctor compaction energy equal to 600 kN-m/m3 was applied to compact subgrade soil. Indian Road Congress Specifications for Fig. 9 Compaction Curves of GB, GS, and Subgrade 4.2 Experimental Setup and Methodology To examine the interface shear properties of subgrade soil, GS and GB with various reinforcements, large-size direct shear apparatus having a shear box size equal to 300 mm × 300 mm × 200 mm in width, length, and height was adopted. The test setup was attached with the vertical and horizontal load cells of 45 kN capacity each, and two INDIAN HIGHWAYS MAY 2019 15 TECHNICAL PAPER linear variable differential transducers (LVDTs) capable of measuring a displacement of ±50 mm. To measure the horizontal and vertical deformations of the specimen LVDTs were employed during the process of shearing. The load and deformation data obtained from load cells and LVDTS captured automatically through a data acquisition system. The reinforcement was placed at the interface between the lower and upper shear boxes and was tightly fixed to the lower shear box using a robust clamping system during reinforced interface testing (can be seen in fig.10). The horizontal force was applied to maintain a rate of shearing of 1 mm per min in accordance with ASTM D 5321. The normal stresses selected to apply over the specimen are 30 kPa, 60 kPa, and 90 kPa. The test was terminated at a horizontal displacement of 50 mm (~ 17% of box size) considering the limitations of the equipment. the range of 40-60° for open-graded aggregates consisting of maximum aggregate size equal to 25.4 mm employing similar apparatus was reported by Nicks et al. (2015). The GB layer exhibited a higher value of friction angle in comparison with the values reported in the literature; it could be ascribed to well-graded aggregate blend and large size of aggregate as well. The GB exhibited lower cohesion (36 kPa) in comparison with GS (94 kPa), the availability of more fine particles in GS contributing to the increased cohesion. Fig. 11 Mohr-Coulomb Shear Strength Envelopes of Gravel base (GB), Gravel Surface (GS), and Subgrade (SG) Fig. 10 Photograph of the Large-Scale Direct Shear Apparatus used for Interface Testing 4.3 Results of Large Size Direct Shear Testing The large-size direct shear tests on the subgrade (SG) and two aggregate mixes (GS and GB) were conducted at the selected moisture contents and unit weight, Fig. 11 presents the Mohr-Coulomb shear strength envelopes. The fitting parameters cohesion intercept (c) and friction angle (φ) considering linear variation of shear strength with change in normal stress are presented in Table 2. The subgrade under consideration did not show clear peak but for the horizontal displacement beyond 20 mm, shear stress along the horizontal plane reaches a plateau and there is no substantial increase further in horizontal stress. For the case of graded aggregate mixes compacted at optimum moisture content applying modified Proctor compaction energy, the well-defined peak was noticed within 10–15 mm horizontal displacement (3.3–5%). The GB layer comprising of higher maximum aggregate size (37.5 mm) shows higher shear strength in comparison with the GS layer consisting lower maximum aggregate size (26.5 mm). The friction angles in 16 INDIAN HIGHWAYS MAY 2019 Table 2 Shear strength properties of granular mixes and subgrade soil Material Cohesion c, Friction angle ф, (degree) GS 94 68 GB 36 70 SG 48 25 4.3.1 Interface shear properties and interaction coefficient To ascertain the interface shear strength, interface shear tests of two geogrids (GG2 and GG3) of different aperture sizes and HSWM with GB and subgrade were carried out under three normal stresses equal to 30, 60, and 90 kPa. A total 12 number of experiments were performed on four types of reinforced interface specimens alone. The four types of reinforced interfaces examined are as follows 1. GB-GG2-GB, 2. GB-GG3-GB, 3. GB-SWM-GB and 4. GB-GG2-SG. For the case of GB–GG2–GB interface, a peak was attained within a horizontal displacement of 5% of box size for higher normal stress, whereas at lower normal stresses (equal to 30 and 60 kPa) even at large horizontal displacement of the shear box, no clear peak shear stress was noticed. Figure 12 shows the MohrCoulomb shear strength envelopes at peak for the four types of interfaces selected. The Interface friction angle and adhesion intercept for GB–GG2–GB interface were found to be 69° and 54 kPa respectively. It was observed that placement of geogrid TECHNICAL PAPER resulted in increased apparent cohesion of the material from 36 to 54 kPa; however, it decreased the friction angle marginally (70° to 69°). Similar results were reported by Tutumluer et al. (2012). The peak interface friction angle and adhesion intercept values for aggregate-soil interface reinforced with various types of geogrids observed by Sakleshpur et al. (2017) were in the range of 8.8°–35.1° and 26.3–111.6 kPa respectively. Kamalzare & Ziaie-Moayed (2011) observed interface friction angle ranging from 42° to 46° and adhesion intercept ranging from 53 to 74 kPa for clay soil–geogrid–granular soil interfaces. In the present study, interface friction angle was observed to range from 42° for SG substratum to 69° for GB substratum, while adhesion intercept was in the range of 75 kPa for SG substratum to 54 kPa for GB substratum when interface was reinforced with GG2 and keeping GB superstratum in both the cases. Table 3 provides the summery of shear properties of various reinforced interfaces under consideration. It was observed that shear stress of HSWM reinforced interface was substantially higher at all the normal stresses in comparison with that of geogrid reinforced interface, mainly due to higher percentage of open area and stiffness of HSWM. The higher interface shear stress could be mainly resulted from higher percentage open area leading to increased mechanical interlocking of aggregate particles against the lateral ribs, in addition to the tensile strength of the HSWM compared to the geogrid reinforcement. The geogrid reinforced interface shear stress curves followed similar trend because of the same percent open area (84%) and alike tensile strength (17–23 kN/m) for the geogrids GG2 and GG3. GB-SWM-GB 230 42 The interaction coefficient of reinforcement with soil may be defined as the ratio of the shear strength at the soilreinforcement interface to the shear strength of the soil without reinforcement at the equal overburden pressure Umashankar et al. (2015). Equation 1 is used to evaluate the interaction coefficient of the reinforcement. (2) where η is the interaction coefficient of reinforcement with soil at a specified normal stress, τreinforced is the shear strength of reinforced soil, and τunreinforced is the shear strength of unreinforced soil. An interaction coefficient more than one indicates the beneficial effect of reinforcement with effective interlocking in the reinforced pavement systems. Table 4 provides the interaction coefficients of various reinforced interfaces. The interaction coefficient was more at 60 kPa normal stress for the case of geogrid reinforced interfaces, in comparison with other two normal stresses, while for the case of HSWM reinforced interface, the interaction coefficient diminished with increase in normal stress. Table 4 Interaction Coefficients for Various Reinforcements with GB Substratum and Superstratum Interaction coefficient Normal Stress σn = 30kPa σn = 60kPa σn = 90kPa Interface GB-GG2-GB GB-GG3-GB 0.73 0.78 0.95 1.16 0.87 0.82 GB-SWM-GB 1.45 1.23 0.95 4.3.2Coulomb Friction Model for Interfaces Fig. 12 Mohr-Coulomb Shear Strength Envelopes of Various Reinforced Interfaces Table 3 Shear Properties of Various Interfaces Interface Adhesion intercept ca, kPa Interface friction angle δ, deg. GB-GG2-GB 54 69 GB-GG2-SG 75 42 GB-GG3-GB 93 65 Coulomb friction model is generally used in modeling of the interfaces on either side of the reinforcement. The interface shear modulus, GI (Eq. 3) expressed as the slope of the elastic portion of the shear stress-displacement curve of interface resulted from the direct shear test Perkins et al. (2004). (3) where τmax is the maximum shear stress, and Eslip is the interface shear displacement parameter. Table 5 presents the interface shear modulus values calculated for different interfaces based on interface tests performed on various reinforcement types and infill materials using Eq. 3. Eslip is INDIAN HIGHWAYS MAY 2019 17 TECHNICAL PAPER exacted from the plot of shear stress and shear displacement for a normal stress equal to 90 kPa. Table 5 Interface Shear Modulus of Various Interfaces at 90 kPa Normal Stress Interface shear Peak shear Eslip modulus, GI stress (kPa) (mm) (kPa/m) Interface GB-GG2-GB 288 12.0 24004 GB-GG2-SG 158 8.0 19773 GB-GG3-GB 270 5.0 54100 GB-SWM-GB 315 5.5 57337 5. Conclusions The inclusion of reinforcement in the form of geogrid and hexagonal steel-wire-mesh reinforcements within the aggregate layer for reinforcement placement depth ratio equal to 0.45 resulted in load improvement factor ranging from 1.1 to 1.7 and 1.4 to 1.9 for the two reinforcement types at various settlement ratios of the footing. The friction angle and cohesion intercept of the GS and the GB at optimum moisture content, compacted applying modified Proctor compaction energy, were found to be 68° and 94 kPa, and 70° and 36 kPa respectively. The shear stress curves of interfaces reinforced with GG2 and GG3 followed the similar trend when infill material was GB, mainly due to the geogrids with similar percent open area and tensile stiffness. For the geogrid reinforced interfaces, the interaction coefficients varies from 0.73 to 1.16, whereas it ranges from 0.95 to 1.45 for HSWM reinforced interface when the normal stress was in the range of 30 to 90 kPa. Interface shear modulus of various interfaces under consideration varies from 19,773 to 57,337 kPa/m for a 90 kPa normal stress. References i. ii. iii. iv. v. 18 Perkins SW (1999) Mechanical Response of Geosynthetic Reinforced Flexible Pavements. Geosynth Int 6:347–382 Zornberg JG, Prozzi J, Gupta R, et al (2008) Validating Mechanisms in Geosynthetic Reinforced Pavements. Austin Chen Q, Abu-Farsakh MY, Tao M (2009) Laboratory evaluation of geogrid base reinforcement and corresponding instrumentation program. Geotech Test J 32:1– 10. doi: 10.1520/GTJ102277 Palmeira EM, Antunes LGS (2010) Large scale tests on geosynthetic reinforced unpaved roads subjected to surface maintenance. Geotext Geomembranes 28:547– 558. doi: 10.1016/j.geotexmem.2010.03.002 Latha GM, NairAM, Hemalatha MS (2010) Performance INDIAN HIGHWAYS MAY 2019 of geosynthetics in unpaved roads. Int J Geotech Eng 4:337– 349. doi: 10.3328/IJGE.2010.04.03.337-349 Al-Qadi IL, Elseifi M a., Leonard D (2003) Development vi. of an Overlay Design Model for Reflective Cracking With and Without Steel Reinforcing Nettings (With Discussion). J Assoc Asph Paving Technol 72:1–41 vii. Hugo F, Mccullough BF, Walt B Vander (1991) FullScale Accelerated Pavement Testing for the Texas State Department of Highways and Public Transportation. Transp Res Rec 1293:52–60 viii. Asphalt Academy (2008) Technical Guideline: Asphalt Reinforcement for Road Construction Abu-Farsakh MY, Akond I, Chen Q (2014) Evaluation ix. of Performance of Geosynthetic-Reinforced Unpaved Roads using Plate Load Tests. 93rd TRB Annu Meet Montanelli F, Zhao A, Rimoldi P (1997) Geosyntheticx. reinforced pavement system: testing & design. Proceeding Geosynth 97 1–15 Hariprasad C, Umashankar B (2015) Load-settlement xi. response of circular footing resting on reinforced layered system. In: 15th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering. Japan xii. Umashankar B, Hariprasad C, Sasanka Mouli S (2015) Interface Properties of Metal-Grid and Geogrid Reinforcements with Sand. In: International Foundations Congress and Equipment Expo 2015. Texas, pp 1–9 xiii. Bergado DT, Youwai S, Teerawattanasuk C, Visudmedanukul P (2003) The interaction mechanism and behavior of hexagonal wire mesh reinforced embankment with silty sand backfill on soft clay. Comput Geotech 30:517–534 . doi: 10.1016/S0266352X(03)00054-5 xiv. ASTM D1557-12 (2012) Standard Test Methods for Laboratory Compaction Characteristics of Soil Using Modified Effort (56,000ft-lbf/ft3 (2,700 kN-m/m3)). 1–14 xv. ASTM D5321/D5321M (2014) Standard Test ethod for Determining the Shear Strength of Soil-Geosynthetic and Geosynthetic-Geosynthetic Interfaces by Direct Shear. Am Soc Test Mater Int 1–11 . doi: 10.1520/ D5321 xvi. Nicks JE, Gebrenegus T, Adams M. (2015) Strength Characterization of Open-Graded Aggregates for Structural Backfills xvii. Al-Qadi IL, Dessouky SH, Kwon J, Tutumluer E (2012) Geogrid-Reinforced Low-Volume Flexible Pavements : Pavement Response and Geogrid Optimal Location. ASCE J Transp Eng 1083–1090 . doi: 10.1061/(ASCE)TE.1943-5436.0000409. xviii. Sakleshpur VA, Prezzi M, Salgado R, et al (2017) Large-scale direct shear testing of geogrid-reinforced aggregate base over weak subgrade. Int J Pavement Eng 1–10 . doi: 10.1080/10298436.2017.1321419 xix. Kamalzare M, Ziaie-moayed R (2011) Influence of geosynthetic reinforcement on the shear strength characteristics of two-layer sub-grade. Acta Geotech Slov 39–49 xx. Perkins SW, Christopher BR, Eli L C, et al (2004) Development of design methods for geosynthetic reinforced flexible pavements TECHNICAL PAPER IMPACT OF PHOTO POLLUTION DUE TO OVER-ILLUMINATION & CURRENT TRENDS IN HIGHWAY LIGHTING Bharat Sojitra1 Sunil Singh Gangwar2 Abstract Photo pollution is a phenomenon that has been reported since a long time, but the specialist's reaction is still modest. There are some attempts for specific regulations. Using photographic tools can be a solution, especially because of the possibilities to achieve global measurements of the lighting field. The purpose of this paper is to substantiate a work in which the general public aware of the phenomenon, based on qualitative evaluations and quantitative assessments. Moving from clear vision at night, for which there are sufficient quantitative information, toward the assessing of photo (light) pollution. The outcome is to finding a way to better observe early forms of light pollution and also to promptly report the serious situations. The purpose of this paper is to increase the awareness about the Bureau of Indian Standards (BIS) Code of Practice for lighting of public thoroughfares and to provide practical guidance on energy-efficient street lighting best practices. These guidelines can also contribute to the development of future standards. 1. Introduction Photo pollution is the adding-of/added light itself, in analogy to added sound, carbon dioxide, etc. Adverse consequences are multiple; some of them may not be known yet. Scientific definitions thus include the following: Photo pollution is the degradation of photo habitat by artificial light. It is the alteration of natural light levels in the outdoor environment owing to artificial light sources. In other words, photo pollution is the presence of anthropogenic light in the night environment. It is exacerbated by excessive, misdirected or obtrusive uses of light, but even carefully used light fundamentally alters natural conditions. As a major side-effect of urbanization, it is blamed for compromising health, disrupting ecosystems and spoiling aesthetic environments. Light pollution is a broad term that refers to multiple problems, all of which are caused by inefficient, unappealing or (arguably) unnecessary use of artificial light. Specific categories of light pollution include light trespass, over-illumination, glare, light clutter, and sky glow. [1,2] 2.OVER-ILLUMINATION Over-illumination is the excessive use of light. Over illuminations is responsible for loss of approximately two million barrels of oil per day. Over-illumination stems from several factors: Table-1 Types of Light Sources in Order of Energy Efficiency and Sky Glow Impact [3] Luminous Efficacy (Lumens/ Sky Glow Impact (Relative watt) to LPS) Type of Light Source Color LED Street Light (White) Warm-white to Cool-white 120 4- 8 Low Pressure Sodium (LPS) Yellow/ Amber 110 1.0 High Pressure Sodium (HPS) Pink/ Amber-white 90 2.4 Metal Halide Warm-white to Cool-white 70 4 -8 Incandescent Yellow/ White 8- 25 1.1 1 Director, Designtech Consultants, Ahmedabad, E-mail: bsojitra@designtechconsultants.com 2 Superintending Engineers, PWD, Electric Circle, Kota, Rajasthan, E-mail: ssgangwar@gmail.com INDIAN HIGHWAYS MAY 2019 19 TECHNICAL PAPER • Not using timers, occupancy sensors or other controls to extinguish lighting when not needed; the visual quality, cost, and energy efficiency aspects of the illumination system. • Improper design by specifying higher levels of light than needed for a given task; 3.1Taking into account considerations of principles of vision, criteria of quality, and characteristics of sources and luminaries Table-2 gives for each classification of installation the desirable level of illumination, the degree of uniformity and the luminaires which are recommended or permitted. [4] • Incorrect choice of fixtures or lamps, which do not direct light into areas as needed; • Improper selection of hardware to utilize more energy than needed to accomplish the lighting task; Most of these issues can be readily corrected with available, inexpensive technology, substitution of old mercury, sodium or metal halide lamps with more energy efficient LED lamps using the same lighting techniques and less electrical power that creates barriers to rapid correction of these matters (Table-1). Most importantly, public awareness would need to improve for industrialized countries to realize the large payoff in reducing overillumination. [3] 3.CLASSIFICATION INSTALLATION ILLUMINATION: OF LIGHTING AND LEVELS OF The most important element of the illumination system is the light source. It is the principal determinant of 3.2For Group-A Lighting, the level and enormity of illumination should be as high as possible. 3.3For Group-B lighting, greater tolerance on uniformity and glare may be admitted which may be justified by the character of the roads and by the presence of facades. 3.4The recommendation of this code will usually provide good results on ‘average’ surfaces, that is, surface which give bright patches of moderate length and which are not unduly dark in colour. 3.5In this table, the parameters given in type of luminaires (Column 6 & 7) has to be revise as these are not relevant in present scenario of LED fixtures. Table-2 Classification of Lighting Installation & Levels of Illumination [4] Classification of Lighting Installation Type of Road (1) (2) Group A1 20 Average Level Transverse Ratio of Illumination Minimum/ Uniformity Ratio = Min/ Max on Road Average Illumination Surface Illumination Type of Luminaire Preferred Permitted (3) lux (4) (5) Percent (6) (7) Important traffic routes carrying fast traffic 30 0.4 33 Cut-off Semi-cut-off Group A2 Other main roads carrying mixed traffic, like Main City Streets, Arterial Roads, Through-ways, etc 15 0.4 33 Cut-off Semi-cut-off Group B1 Secondary roads with considerable traffic like principal local traffic routes, Shopping Streets, etc. 8 0.3 20 Cut-off or Semi-cut-off Non-cut-off Group B2 Secondary roads with light traffic 4 0.3 20 Cut-off or Semi-cut-off Non-cut-off INDIAN HIGHWAYS MAY 2019 TECHNICAL PAPER 4.OVERVIEW AND PROPOSED MODIFICATION ON HIGHWAY LIGHTING DESIGN CRITERIA AS PER BIS STANDARDS AND CODE OF PRACTICES IN THE IRC MANUAL: Table-3 Overview & Proposed Modification in IRC: SP: 73 - 2015 [4, 5, 6] S. No. 1.0 a. b. c. Reference As Per IRC: SP: 73 - 2015 Existing Parameters Proposal to Review &Update • M in. 30 to 40 kW Roof top solar power plant will be installed on Toll Canopy/ Toll Plaza area. SECTION 10 : TOLL PLAZAS Clause 10.4.17 Interior Lighting: Clause 10.4.17 High Mast Lighting: Clause 10.4.17 Highway Lighting: • I ndoor lighting shall be with • All Indoor lighting shall be with LED Lamps Fluorescent Lamps. only. • A height of 30 Mtr. for the mast • A height of 20 to 30 Mtr. is considered as per area is considered. of the Toll Plaza. • A minimum requirement of • A requirement of average luminance on the Road illumination on the road surface surface is 30 lux & uniformity ratio are Emin/ of average 40 lux shall be Eavg = 0.4 and Emin / Emax = 0.25 shall be ensured. ensured. • T hese shall be provided on the • These shall be provided on the Hot Deep GI Steel mild steel welded tubular pole Welded Tubular/ Octagonal Pole of 8 to 11 Mtr. of 10 m height from road surface height from Road surface & with 1-2 Mtr. over and with 2 m overhang. hang as per design calculation. • S odium Vapour Lamp of 200- • LED Lamp of 70 to 250 Watts should be provided. 250 Watts should be provided. Wattage will be selected as per average lux requirement. d. Clause 10.4.17 Canopy Lighting : 2.0 a. b. SECTION -12 Clause 12.4 Clause 12.4.1: General Clause 12.4.2: Specifications • Higher level of illumination up • An average level of illuminance on below space to average 100 lux by providing frame is 70 lux by providing 70 to 110 Watt LED 150 Watt Metal Halide lamps. lamps. PROJECT FACILITIES STREET LIGHTING The concessionaire shall make • The concessionaire shall make suitable suitable arrangements for arrangements for procuring power supply to procuring power supply to ensure ensure uninterrupted lighting during night and uninterrupted lighting during when visibility is low, including provision of DG night and when visibility is low, sets as standby arrangements at key Junctions, including provision of DG sets as Complex Flyover Interchanges, Major Built-up sections only and it will be follow strictly. standby arrangements. • Unless stated otherwise in this • Unless stated otherwise in this manual, the Manual, the minimum level of Average level of illumination on the locations illumination on the locations of the of the project Highway where lighting is to be Project Highway where lighting is provided as per below : to be provided shall be 40 Lux. (1) Main Carriageway on entire Highway: Average level of illumination on road surface is 30 lux. (2) Service roads in Built-up sections/Grade Separator/VUP/ Interchange area on entire Highway: Average level of illumination on road surface is 15 lux. (3) Key Junctions & Complex Flyover Interchanges: Average level of illumination on road surface is 40 lux. INDIAN HIGHWAYS MAY 2019 21 TECHNICAL PAPER (4) Main City Bypass Junctions without any interchanges: Average level of illumination on road surface is 20 Lux. (5) VUP / PUP / CUP underpass crossings: Average level of illumination on road surface is 40 lux. PUP / CUP Underpass crossings lighting shall be operated through Solar power (6) The rest area shall be provided with average level of illumination of 30 lux on road surface. c. e. 12.5 12..5.5 12.6 12.6.8 Truck Lay-byes Lighting: The truck lay-byes and 50 Mtr. length of the project highway on its either side shall be illuminated at night to provide a minimum illumination of 40 lux. The truck lay-byes and 50 Mtr. length of the project highway on its either side shall be illuminated at night to provide average illumination of 30 lux on road surface by using Solar power LED street light with day light sensor specially in those area where no electrical connection is available at nearby area. Bus bays and Bus Shelters Lighting : The entire bus bay area shall be The entire bus bay area shall be provided with provided with lighting minimum average level of illumination of 20 lux on road illumination of 40 lux. surface by using Solar power LED street light with day light sensor specially in those area where no electrical connection is available at nearby area. Table-4 Overview & Proposed Modification in IRC:SP: 84 - 2014; IRC:SP: 87 - 2013[4, 5, 7, 8] Reference as per S. No. IRC:SP: 84 - 2014; SP:87 - 2013 1.0 a. b. c. d. 22 Existing Parameters Proposal to Review & Update • M in. 30 to 40 kW Roof top solar power plant will be installed on Toll Canopy/ Toll Plaza area. SECTION 10 : TOLL PLAZAS Clause 10.4.17 Interior Lighting: Clause 10.4.17 High Mast Lighting: Clause 10.4.17 Highway Lighting: • I ndoor lighting shall be with • All Indoor lighting shall be with LED Lamps Fluorescent Lamps. only. Clause 10.4.17 Canopy Lighting : • A height of 30 Mtr. for the mast • A height of 20 to 30 Mtr. is considered as per area is considered. of the Toll Plaza. • A minimum requirement of • A requirement of average luminance on the illumination on the road surface Road surface is 30 lux & uniformity ratio are of 40 lux shall be ensured. Emin/Eavg = 0.4 and Emin / Emax = 0.25 shall • These shall be provided on the be ensured. mild steel welded tubular pole • These shall be provided on the Hot Deep GI Steel of 10 m height from road surface Welded Tubular/ Octagonal Pole of 8 to 11 Mtr. and with 2 m overhang. height from Road surface & with 1-2 Mtr. over • Sodium Vapour Lamp of 200- hang as per design calculation. 250 Watts should be provided. • LED Lamp of 70 to 250 Watts should be provided. Wattage will be selected as per average lux requirement. • Higher level of illumination up • An average level of illuminance on below space to 100 lux by providing 150 Watt frame is 70 lux by providing 70 to 110 Watt LED Metal Halide lamps. lamps. INDIAN HIGHWAYS MAY 2019 TECHNICAL PAPER SECTION -12 PROJECT FACILITIES Clause 12.3 STREET LIGHTING a. Clause 12.3.1: General The concessionaire shall make • The concessionaire shall make suitable suitable arrangements for arrangements for procuring power supply to procuring power supply to ensure ensure uninterrupted lighting during night and uninterrupted lighting during when visibility is low, including provision of DG night and when visibility is low, sets as standby arrangements at key Junctions, including provision of DG sets as Complex Flyover Interchanges, Major Built-up sections only and it will be follow strictly. standby arrangements. b. Clause 12.3.2: Specifications • U nless stated otherwise in this • Unless stated otherwise in this manual, the Manual, the minimum level of Average level of illumination on the locations illumination on the locations of the project Highway where lighting is to be of the Project Highway where provided as per below : lighting is to be provided shall (1) Main Carriageway on entire Highway: Average be 40 Lux. level of illumination on road surface is 30 lux. 2.0 (2) Service roads in Built-up sections/Grade Separator/VUP/ Interchange area on entire Highway: Average level of illumination on road surface is 15 lux. (3) Key Junctions & Complex Flyover Interchanges: Average level of illumination on road surface is 40 lux. (4) Main City Bypass Junctions without any interchanges: Average level of illumination on road surface is 20 Lux. (5) VUP / PUP / CUP underpass crossings: Average level of illumination on road surface is 40 lux. PUP / CUP Underpass crossings lighting shall be operated through Solar power (6) The rest area shall be provided with average level of illumination of 30 lux on road surface. c. 12.4 12..4.4 e. 12.5 12.5.8 Truck Lay-byes Lighting: The truck lay-byes and 50 Mtr. length of the project highway on its either side shall be illuminated at night to provide a minimum illumination of 40 lux. The truck lay-byes and 50 Mtr. length of the project highway on its either side shall be illuminated at night to provide average illumination of 30 lux on road surface by using Solar power LED street light with day light sensor specially in those area where no electrical connection is available at nearby area. Bus bays and Bus Shelters Lighting : The entire bus bay area shall be The entire bus bay area shall be provided with provided with lighting minimum average level of illumination of 20 lux on road illumination of 40 lux. surface by using Solar power LED street light with day light sensor specially in those area where no electrical connection is available at nearby area. INDIAN HIGHWAYS MAY 2019 23 TECHNICAL PAPER 5.MAJOR BENEFITS DUE TO AMENDMENT IN IRC MANUAL: (1)By using LED lamps instead of Sodium Vapor Lamps - Increase the life of lamps, burning hours & reduce Energy consumption. (2)Reduction in CO2 (carbon) due to reduction in energy consumption which is around 975 kg/ kWHr, which is a great benefit to the society & environment as a whole. [9] 6.LATEST TRENDS: Street lighting systems are not complete solution, if not integrated with automation and other intelligent features. Generally, it has been observed that an integrated smart street lighting system provides over 30% of extra energy savings. Also, it provides the service provider with better control over the quality of the services. It gives better, dynamic remote management and faster outage response. This also helps them immensely in reducing their O&M costs over time. An intelligent automation based street lighting system can be adopted at Toll Plaza By this smart system we can control, monitor and manage the street lights. It may be a time based switching or day light sensor based system controlled with microprocessor/ SCADA programming. This system will be beneficial for energy saving and management. Web Based Street light monitoring also helps in remote monitoring of lights and hence immediate action is possible if there is a problem or failure in any of the street lights. 7. By adopting new and energy-efficient technologies, like two stage control for peak, off-peak traffic, and sensor based street lighting system, large energy and cost savings can be achieved. Considering the variable power quality conditions in India, selection of lamps that operate over a wide range of power parameters would significantly reduce the replacement costs of the lamps by reducing the failure rate, although it may entail a high initial investment cost. The efficiency of street lighting can also be significantly improved by selecting appropriate optics for the luminaires as well as ensuring proper mounting height, overhang, and angle of tilt in a street lighting installation. Following these guidelines can enhance visibility and safety, and help reduce electricity consumption and costs, so as to free up resources for other pressing needs, thereby contributing to the improvement of the overall quality of life. REFERENCES: i. Cinzano P: What is light pollution? Retrieved on July 10, 2008. Online as http://www.savethenight.eu ii. Hollan, J: What is light pollution, and how do we quantify it? http://amper.ped.muni.cz/light/lp_what_ is.pdf iii. Light Pollution Wikipediaiv. https://en.wikipedia.org/wiki/Light_pollution#cite_ note-91 v. Indian Standard, Code of Practice for Lightning of Public Thoroughfares, IS 1944 (Part 1 & 2): 1970 (RA: 2018). CONCLUSION: A well-designed, energy-efficient street lighting system should permit users to travel at night with good visibility, in safety and comfort, while reducing energy use and costs and enhancing the appearance of the neighborhood. Conversely, poorly designed lighting systems can lead to poor visibility or light pollution, or both. [10] Most importantly, the design of a street lighting system must be appropriate for the site and should provide the level of illumination (lux) and uniformity of light. Decisions about lighting systems also should take into account the relative importance in each situation of such characteristics as lamp efficacy, good color rendering, and light distribution of different types of lamps. As a part of the design of street lighting system, after completion of installation work, a third party verification of lux level shall be essential from any NABL accredited 24 lab. INDIAN HIGHWAYS MAY 2019 vi. Indian Standard, Code of Practice for Lightning of Public Thoroughfares: Part 5 Lighting for Grade Separated Junctions, Bridges and Elevated Roads (Group D), IS 1944 (Part 5): 1981 (RA: 2018). vii. IRC:SP:73 Manual of Specifications & Standards for Two- Laning of Highways with Paved Shoulders. viii. IRC: SP: 84-2014 Manual of Specifications & Standards for Four Laning of Highways Through Public Private Partnership. ix. IRC:SP: 87-2013 Manual of Specifications & Standards for Six Laning of Highways Through Public Private Partnership. x. Energy Efficient Street Lighting Guidelines- Bureau of Energy Efficiency. xi. NYSERDA How-to Guide to Effective EnergyEfficient Street Lighting for Planners and Engineers. (http://www.rpi.edu/dept/lrc/nystreet/). TECHNICAL PAPER Need to lay down Criteria for Fixing of Road Side Furniture with reference to ‘Distance between centre of Front Wheels and Bumper (front overhang of vehicles) - in Urban areas Kuldeep Singh1 1. Amarjeet Singh2 Arun Kumar Sharma3 Introduction Road side furniture is being installed for safe movement of traffic as they provided necessary guidance and navigation aid to traffic. In urban areas on account of shortage of Right of Way (ROW) and land width, road side furniture such as railings, crash barriers, street light poles, bus shelters are located near the edge of central verge and shoulders which are built up or demarcated by raised concrete kerbs. As the road side furniture is invariably provided close to the edge of central verge and shoulders, the same gets hit by the front bumper of commercial vehicles resulting in their breaking and /or tilting resulting in cease of function for which they are provided. In certain cases these tilted road side furniture results in a hazard to smooth movement of traffic e.g. tilted railings and electric pole. The distance between front wheels and front bumper of vehicle marked as ‘front overhang’ is shown in Fig.1 is not considered in planning for location and fixing of road side furniture. The ‘front overhang’ for different categories of vehicles is as under: Table 1 : Category of Vehicles and their Front Overhang S.No. Category of vehicle Front overhang (in meters) 1. Maruti Swift 0.82 2. Low Floor Bus 2.55 3. Tractor Trailor 1.50 4. Large Truck (14 wheeler) 1.435 5. Dumper Truck 1.545 FRONT OVERHANG Fig. 1 Front Overhang in a Bus With the manufacture of new vehicles in view of emerging market in country it shall be considered appropriate to limit or fix range for front overhang as we can not afford to improve the geometrics or urban road in view of restricted land width and right of way. In IRC:SP:84-2014 “Manual of Specifications & Standards for Four Laning of Highways through Public Private Partnership” the distance between edge of median and railing is provided as 0.6 meter. In IRC:67:2012 the minimum, desirable and maximum distance for placing sign board from central verge kerb stone is 0.3 m, 0.6 m and 1.0 m respectively. 2.Examples of Location of Road Side Furniture Close to Edge of Center Verge 2.1 Railing on Narrow Center Verge In many congested urban locations to prevent haphazard crossing of road by pedestrians, the railing of cement 1 Chief Engineer (Retd.) Punjab PWD 2 Chief Engineer (Retd.) Police Housing Corporation Punjab 3 Chief Engineer (Retd.) Ministry of Road Tarnsport & Highways INDIAN HIGHWAYS MAY 2019 25 TECHNICAL PAPER concrete or steel is provide close to the kerb stone of central verge (as shown in Fig. 2). In the straight reaches of these roads, the vehicle movement is not affected by location of railing but on the outer side of curves the railing gets hit by the front bumper of trucks and buses. Damaged railing at edge of road show in photo 1. in movement of traffic till removed from site. This also results in avoidable expenditure. Fig. 4 Electric Pole in Middle of Central Verge Fig. 2 Railing in Middle of Central Verge 2.2 Flowers Pots on Narrow Central Verge For roads in urban areas, for beautification of central verge and for achieving increase in effective height, flower pots are provided (as shown in Fig. 3). The shrubs in these pots helps in cutting the head light glare of vehicle moving in opposite direction. On many occasions movement of trucks and buses hit these flower pots which fall on the road thus resulting in a hazard in smooth movement of traffic till removed and put in position. 2.4 Fixing of Bollards Near Edge of Shoulders In some urban areas, bollards are provided at entrance to service roads to prevent their usage by fast moving commercial vehicles. These bollards are invariably broken by front overhang of commercial vehicles. The broken bollards are replaced after long time and debris from broken bollard also result in a traffic hazard. Photo 1. Broken Railing at Edge of Road Fig.3 Flower Pots in Middle of Central Verge 2.3 Electric Poles on Central Verge To avoid head on collision between vehicles in many urban roads are being provided with narrow central verge and in view of existing trees along shoulders, electric poles are being provided in central verge (as shown in Fig. 4). These poles when hit by any commercial vehicle, get tilted in the carriageway, resulting in undesirable hindrance 26 INDIAN HIGHWAYS MAY 2019 2.5Concrete/Steel Railing for Segregation of Traffic in Delhi RCC railing has been provided for segregation of traffic coming from ramps to the main carriageway at Shahdara Flyover in New Delhi. These railings gets damaged by movement of commercial vehicles on account of poor visibility of the railing in the absence of adequate retro reflecting paint or tape on the railing thus resulting as obstruction in smooth movement of traffic. TECHNICAL PAPER Frequent Damage to wall at outer edge of curve at New Delhi. The wall is 10 cm from roads edge. 2.7Location of Supports/ Piers of Structure in Central Verge To meet the requirement of ever increasing urban traffic, elevated structures are coming up including construction of elevated Pedestrian Bridges. To affect economy the central support of these structures are located in the central verge. These vertical supports are further used for advertising on a large scale. The process of providing of and replacing of these advertising boards results in a traffic hazard on the road itself. Further as and when cladding provided on these vertical supports (particularly in case of steel structures) gets damaged or protrudes on to the road results in traffic hazard e.g. Pedestrian bridge on Bhisampitma Marg in New Delhi. 2.8 Narrow bridges and culverts are traffic hazards on account of inadequate distance width available for movement of front bumper of commercial vehicles. Photo 2. Photo of Broken wall at edge of Road at New Delhi 2.6Location of Bus Shelters Close to Edge of Shoulder In urban congested areas due to paucity of space, sometimes bus shelters for convenience are being located close to the edge of shoulder. The roof of bus shelter projecting as cantilever is usually hit by the roof of buses which damages the bus shelter and buses. The problem of hitting roof is further aggravated by the fixing of advertising board on the front of cantilever roof of these shelters. (Photo 3) 3. Suggested Actions With ever increasing vehicular traffic in urban areas particularly mixed traffic, the safety of road users cannot be compromised, an immediate attention need to given to the aspects described above. Certainly there would be other associated problems. The suggested actions in this regard includes in addition to others: 3.1To undertake traffic survey in respective areas/zones to assess the extent of front overhang of commercial vehicles and to locate the road furniture in a way to avoid it being hit by the commercial vehicle. 3.2To undertake an intelligent survey of the affected areas, to identify hazardous locations and to recommend remedial measures which includes shifting /relocation of road side furniture from edge of central verge and shoulders. 3.3On outer side of curves, kerb stone, railings, crash barriers should be located at least 1.25 meter from edge of road and in the event adequate space is not available the fixing of railings etc. should be avoided. 3.4The projecting roof of bus shelters should be located at least 1.0 meter inside from the edge of raised shoulder. Attempt may also be made to avoid roof hanging advertising boards. 3.5Hazardous locations should be adequately marked by providing adequate retro-reflective signage, tapes and suitable warning sign boards. Photo 3. Bus Shelter at the Edge of Shoulder 3.6Information with the Road Maintenance gangs can be used with advantage in locating road side furniture at INDIAN HIGHWAYS MAY 2019 27 TECHNICAL PAPER hazardous locations and providing suitable collapsible road furniture at such locations. 3.7Many times the plantation, road furniture, other sign boards located in the median and splitter island in a junction influence area would become objects obscuring the visibility for drivers to see each other and pedestrians while approaching and turning at the junction, resulting in accidents. If all such objects are removed from the tip of median and splitter island for a length of stopping sight distance, the junction visibility can be enhanced and also the likelihood of vehicles hitting the object due to overhanging can be avoided. 3.8Though a physical median in an urban road segregate the opposite stream of traffic, a narrow median would not serve as safe refuge space for pedestrian to cross a multi-lane highway. In all such cases, the objects installed in narrow median without providing a minimum clearance of 300mm from the vertical face of raised kerb are likely to be hit by the lateral overhanging of vehicles (like the situations shown in Fig 2 to 6). Hence the refuge space for pedestrian to wait safely as well as the minimum lateral clearance will have to be catered while deciding the minimum width of a physical median in divided highway. 3.9Indian Roads Congress may consider undertaking detailed studies jointly with Ministry of Road Transport & Highways along with State Public Works Departments to review and revise exiting recommendation and to draft new recommendations for fixing of road side furniture in urban areas so as to achieve safety of road users and to maintain capacity of existing roads to cater to the ever increasing traffic. References i. IRC:84:2014 “Manual of Specification and Standards for Four Laning of Highways through Public Private Partnership” ii. IRC:67-2012 “Code of Practice for Road Signs” (Third Revision) IRC Technical Committees Meeting Schedule for May, 2019 Date Day Time Name of the Committee 03-05-19 Fri 02.30PM Road Maintenance & Asset Management Committee (H-6) 11.00 AM Project Preparation, Contract Management, Quality Assurance and Public Private Partnership Committee (G-1) 04-05-19 28 Bearings, Joints and Appurtenances Committee (B-6) Sat 01.00 PM General Design Features (Bridges and Grade Separated Structures) Committee (B-1) 03.00 PM Composite Pavement Committee (H-9) 07-05-19 Tue 11.00 AM Rural Roads Committee (H-5) 10-05-19 Fri 11.00 AM Management, Maintenance and Rehabilitation Committee (B-8) 11-05-19 Sat 11.00 AM 17-05-19 Fri 11.00 AM Transport Planning and Traffic Engineering Committee (H-1) 18-05-19 Sat 11.00 AM Identification, Monitoring and Research Application (IMRA) Committee 25-05-19 Sat 11.00 AM INDIAN HIGHWAYS MAY 2019 Flexible Pavement, Airfield & Runways Committee (H-2) Subgroup of Loads and Stresses Committee (B-2) Hill Roads & Tunnels Committee (H-10) Loads and Stresses Committee (B-2) TECHNICAL PAPER APPLICATION OF MINISTRY OF ROAD TRANSPORT & HIGHWAYS (MORTH) CIRCULARS FOR PAVEMENT OPTION STUDIES WITH CASE STUDIES Swapan Bagui1 Atasi Das2 Abstract MORTH issued two circulars for pavement option study. Default mode of pavement option is rigid pavement. Rigid pavement option has been considered based on least Green House Gas emission, least life cycle cost and highest benefit cost ratio. If flexible pavement option is considered, it shall be justified with consideration benefit cost ratio. Benefit cost ratio should be greater than one. A methodology of pavement option has been developed based on these two circulars of MORTH and presented in this paper for selection of pavement option. Two case studies have been carried for initial pavement cost variation within 20 % and more than 20%. Flexible and rigid pavement option considered initially for Case Study 1 and Case Study 2 respectively. Finally rigid pavement option has been found viable option based on life cycle and benefit cost ratio analyses for both cases. 1. Introduction Life cycle cost analysis of existing road is becoming more significant to determine the proper time of maintenance and the proper action, which should be taken for maintenance. An efficient maintenance policy is essential for a costeffective, comfortable and safe transportation system. But, the decision to maintain the road facilities, consider a number of possible ways from routine maintenance action to reconstruction of the road network. Moreover, an economic analysis of a road network is dependent upon a number of factors, which are responsible for deciding road serviceability level. Optimization model is an analytical model, which helps to make a cost benefit analysis and compare that with various possible alternatives to give out the best possible activity within the allocated budget, before being carried out in field work. Road authorities of all around the world are finding and innovating ways to cope with the high cost of road network maintenance, the increasing demands of road users and the changing traffic type and volume. The road network plays a vital role in contributing to the economic, social, cultural and environmental development of the country. A well-maintained road is needed to make the network sustainable for future generations. Improving road maintenance management has become a key factor in developing nations like India. The instrument thinks about and examines the relative monetary alternatives of diverse constructional and recovery plans for a roadway. It decides the execution data by analysis of pavement administration information and experience to assess the pavement condition. Life-Cycle Cost Analysis (LCCA) is a process for evaluating the total economic worth of a usable project segment by analyzing initial costs and discounted future costs, such as maintenance, user, reconstruction, rehabilitation, restoring, and resurfacing costs, over the life of the project segment. LCCA is an economic method to compare among alternatives that satisfy a need in order to determine the lowest cost option. According to Chapter 3 of the AASHTO Guide for Design of Pavement Structures, life cycle costs “refer to all costs which are involved in the provision of a pavement during its complete life cycle.” These costs borne by the agency include the costs associated with initial construction and future maintenance and rehabilitation. In addition, costs are borne by the traveling public and overall economy in terms of user delay. The life cycle starts when the project is initiated and opened to traffic and ends when the initial pavement structure is no longer serviceable and reconstruction is necessary. 2.ADVANTAGE AND DISADVANTAGE OF CHOOSING RIGID AND FLEXIBLE PAVEMENT Advantage and disadvantage of flexible pavement and rigid pavement are presented in Table 1. 1 CGM, ICT (I) Pvt. Ltd. New Delhi E-mail: swapanbagui@gmail.com 2 GM GR Infra Projects Ltd. Gurugram E-mail: atasi.d@gmail.com INDIAN HIGHWAYS MAY 2019 29 TECHNICAL PAPER Table 1 Advantage and Disadvantage of Rigid Pavement and Flexible Pavement S. No. Advantages 30 Rigid Concrete Pavement Bituminous Flexible Pavement Has a Life Span of 30-35 years. Life Span of 10-15 years. 1 Life Span 2 Maintenance Requirement Minor repair at the joints or replacement Requires frequent extensive maintenance during the Life Span of sealant at few locations. This is also (say after every three to four years) required after 10- 12 yrs. during the design life on account of formation of ruts, potholes, revelling and deformation. Routine maintenance as well as overlay and strengthening is required. 3 Life Cycle Cost (LCC) Though initial cost of construction is Considering the Life Cycle Cost, it is not higher, it works out to be economical economical to go for flexible pavement. considering the Life Cycle Cost i.e. initial cost and maintenance cost 4 Riding Quality Offers a very good riding quality for longer period i.e. 15-20 yearrs /more due to complete absence of ruts and deformation in profile. Riding quality deterioration is very fast; in a short span of 4-5 yearrs. Thus requiring frequent laying of wearing coat after 4-5 yearrs. Road surface is required to be restructured when the roughness reaches value of 3000 mm per km 5 Abrasion Resistance Rigid Pavement being hard surface offers high resistance to abrasion due to movement of traffic, especially heavily loaded trucks and trailers. Bituminous surface rapidly disintegrates and get damaged specially on curves and near bus stops on account of braking and accelerating forces. Thus requiring frequent repair/ overlay 6 Oil Spillage It is totally unaffected by spillage of oils & lubricants from stationery and moving vehicles. Thus it is best choice for Bus Depots, Aircrafts Aprons, Hard standing, and truck parking bays, fuel stations and Garages where chances of oil spillage are high. Spilled petroleum products dissolve bitumen, resulting in loss of binder and loosening the aggregates. Thus the surfaces get pitted and start disintegrating with passage of time. 7 Skid Resistance In order to provide good skid resistance surface, desired texturing can be achieved while the concrete is still green. Texturing will easily last for l0-12 yrs. after which it is possible to carryout re-texturing of the surface. Further drainage channels can lead the water away thus avoiding formation of film between tyre and the road, thereby preventing hydro-planing (Skidding). Smooth Asphaltic surface offers skid much less skid resistance. Since it has to depend on the texture of the aggregates for imparting skid­ resistance, open textured surfaces likes chipping carpets and surface dressing can offer skid resistance but cannot be used on National Highway and Major roads 8 Design Precision Precise Structural analysis & design is possible increase of rigid pavement as flexural strength of concrete can be scientifically tested which form the basis . Flexible pavement design is based mainly on Empirical methods and depends on the characteristic of the materials used for construction. INDIAN HIGHWAYS MAY 2019 TECHNICAL PAPER 3.MORTH CIRCULARS FOR PAVEMENT OPTION STUDY MORTH issued two circulars related pavement option study and details are presented here in. 3.1 First Circular Ministry vide circular no. RW/NH-33044/5312013-S&R (R) dated November, 2013 had advocated the issue of environment friendly construction practices for reduction of greenhouse gases and had also inter-alia specified the Life Cycle Cost Analysis as an essential component of infrastructure design. Summary of above circular is presented here in. Roads sector is one of the contributors to Green House Gas (CHG) emissions which is adversely affecting the environment. There is, thus a need to incorporate the most environmental friendly construction practices in development of highways for reduction of Green House Gas emissions. Innovative materials/ technologies which mitigate negative impact on the environment also need to be encouraged. Besides, Life-cycle cost analysis is also an essential component of infrastructure design. This embraces the maintenance and rehabilitation costs, not just initial construction costs, when evaluating pavement alternatives. Life cycle cost analysis enables examination of various design options to determine which pavement type is the most cost effective over the total life cycle of the pavement. In view of the above, it is imperative that due diligence is observed in preparation of feasibility/ detailed project reports for all upcoming National Highway projects in order to reduce CHG emissions as well as in arriving at life-cycle costs considering the service life of pavement alternatives. Hence, the feasibility studies/ detailed project reports for development of National Highways shall, invariably, discuss the following: a. The construction materials/ technologies proposed with reference to their environment friendliness; b. Use of recyclable materials/ waste materials from other industries; c. Use of efficient and environment friendly construction equipment and plants; d. Designs using alternative materials/ technologies so as to enable the implementing agencies to select the most economical design which would result in substantially reduced CHG emissions and least cost over the intended life cycle. 3.2 Second Circular MORTH second Circular issued vide MORTH letter No:RW/NH-33044/31/2014/S& R (R) (Pt) dated 4 August 2014.Important points are highlighted here in: 1.Considering the issue related to longer service life, fuel consumption, resistance to extreme weather conditions, saving of natural resources and maintenance etc. the obvious advantages of rigid pavement cannot be denied. However there are several caveats which need to be analyzed in arriving at. the best possible option: a. Rigid pavement will be best in the highway projects requiring substantive construction/ upgradation. Where the projects envisage minor improvements as in the form of tile paved shoulders or widening etc., the efficacy of the rigid pavement construction in such a scenario would require to be assessed. b. The price of cement vis-a-vis bitumen varies widely in different parts of the Country depending up on the lead from the production centers/ refineries. This variation would be required to be mapped out and unless there is price comparison within acceptable limits up to 20%, the use of flexible pavements may perhaps require to be continued. c. Availability of cement at the macro level will also need to be assessed. 2.Although, rigid pavement could be default mode of construction, a provision for considering alternative methodology (including flexible pavements) would need to be clearly provided for. The agencies preparing DPR’s for the National Highway projects would be expected to bring out the reasons why rigid pavement could not be adopted in specific National Highway project and the Cost Benefit Analysis of rigid pavement vis-à-vis flexible pavement in each project should be clearly brought out. Based on these two MORTH circulars, a flow chart has been developed and presented in Fig.1. This flow chart can be used for determination of pavement type selection. INDIAN HIGHWAYS MAY 2019 31 TECHNICAL PAPER Fig.1 Flow Chart for Pavement Option 4. FUEL SAVINGS IN RIGID PAVEMENT The increased deflection on flexible pavements absorbs part of the vehicle energy that would otherwise be available to propel the vehicle. Thus more fuel is required to drive on flexible pavements. Concrete pavement reduces road deflection and the corresponding fuel consumption. Field trials carried out in USA (Cement Manufactures Association, New Delhi 1997) have brought out the important role played by the type of road surface in fuel consumption. The following conclusions have been made: a. As regards heavy trucks, the data concludes that the average fuel consumption on a concrete pavement is far less than the fuel consumption on an asphalt pavement of comparable roughness. b. Difference in fuel consumption between the two pavement types was found to be as much as 20 percent. 32 INDIAN HIGHWAYS MAY 2019 The above conclusion is related to the fact that trucks cause more deflection in flexible pavements than in rigid pavements; deflecting the pavement absorbs part of the vehicles energy that would otherwise be available to propel the vehicle. A similar study carried out recently in India (Cement Manufactures Association, New Delhi 2000), has revealed concrete slab gives a fuel saving of up to 14 percent when compared to a bitumen pavement on similar riding quality. 5. DIFFERENT CASE STUDIES Two case studies have been considered and presented here in. 5.1 Case Study 1 It is assumed that the present road is two lane configurations and it will be upgraded to four lanes with median. The road may be upgraded to flexible pavement or rigid pavement. In base case, it is assumed that road will be two lanes and no lane configuration upgradation and minimum overlay/ TECHNICAL PAPER maintenance will be provided for trafficable condition. Improvement cases are considered following two cases: • Improvement of existing road from two lanes to four lanes with flexible pavement. • Improvement of existing road from two lanes to four lanes with rigid pavement The proposed evaluation framework is based on a costbenefit analysis, which sets a monetary value where possible on all economic and social costs and benefits over the lifetime of the project. The underlying principles for this analysis are as follows: • The lifetime of a road project for the present analysis is considered as the period for which reliable traffic forecasts can be made. A discount rate of 12 % is then applied to future economic costs and benefits to arrive at the Net Present Value (NPV); • To analyze the cash flow at constant prices, an allowance is made for relative price inflation; and • The standard methodology used for the economic evaluation for transport projects has been adopted. Analysis is accomplished by determining the appropriate improvement proposal that leads to minimum total transport cost, which comprises of two basic components shown below : - Road Agency Costs: Construction and Maintenance Road User Costs: Vehicle Operating, other user (like travel time costs) and Accidents Assumptions The following assumptions are adopted for analysis: • Average cost per km is taken for analysis. • Different costs like, vehicle mode wise cost, tire cost, fuel cost, maintenance cost, rehabilitation costs, working, non-working cost, value of time etc. have been calculated based on the guide line IRC: SP:30-2009. • Discount rate is adopted 12 % as recommended by World Bank • Project is analysis for design period of 30 years Preliminary project cost has been determined based on pavement design, widening of the road from two lanes to four lanes with median. Pavement Cost (Bituminous, granular layer and subgrade) has been found out Rs. 51.55 million per km for flexible pavement and Rs. 63.86 million for rigid pavement. Difference in cost is 23.9%. The different routine and schedule maintenance works have been presented in Table 2. Annual maintenance cost has been considered in analysis. Table 2 Maintenance Policy Flexible Pavement i) Functional ii) Structural Description of Work Intervention Criteria 40 mm Bituminous Concrete Schedule every fifth year 40 mm Bituminous Concrete + 60 mm Dense Bituminous Concrete Schedule every tenth year Patching, pot hole repair, crack sealing, repair of drain cleaning, iii) Routine maintenance Schedule annually culvert bridge etc. Rigid Pavement i) Routine maintenance crack sealing, repair of drain cleaning, culvert bridge etc Schedule annually Joint Sealing, re-texturing of concrete, dowel retrofitting 10-12 Years Slab Replacement Every 5 years Road user benefit is requirement less fuel consumption, reduced travel time, less maintenance cost of the vehicle parts and reduction of accident cost. 5.1.1 Selection of Pavement Type ROADEO Software (World Bank) and summarized results presented in Table 3. Table 3 Green House Gas Reductions Case Green House Gas Emission in Term CO2 (Ton) Per km of Road Reduction in Greenhouse Gas Emission Case 1 Flexible Pavement Option 5320 - Case 1 Rigid Pavement Option 4150 28% Pavement option study has been carried out as per Flow Chart presented in Fig.1. Default mode of pavement type is rigid as per MORTH Circular- MORTH Circular: RW/NH-33044/31/2014/ S&R (R) (Pt) dated 4 August 2014. Green House gas reduction has been calculated using INDIAN HIGHWAYS MAY 2019 33 TECHNICAL PAPER From Table 3, it is found rigid pavement is better considering greenhouse gas reduction. Therefore, rigid pavement option is better choice. pavement. Benefit cost ratios have been calculated varying fuel saving and presented in Fig.2. Pavement Cost (Bituminous, granular layer and subgrade) has been found out Rs. 51.55 million per km for flexible pavement and Rs. 63.86 million for rigid pavement. Difference in cost is 23.9% which is not comparison within 20%. Therefore, choice of flexible pavement may not be considered i.e., rigid pavement of may be considered. For life cycle costing, only major pavement components have been considered for analysis. LCC per km of road is presented in Table 4. Table 4 Life Cycle Cost Analysis Life Cycle Remarks Cost Per Km (Rs) Case Case 1 Flexible Pavement Option 79,688,184 - Case 1 Rigid Pavement Option 76,617,085 Life cycle of rigid pavement is 4.1 % cheaper than that of flexible pavement. Therefore, rigid pavement option may be considered. As per MORTH Circulars and Table 4, Rigid pavement option is the best solution. Therefore, pavement option may be completed in this stage. It is found that life cycle cost variation is only 4.1 % which is very small amount saving. Therefore, flexible pavement may be considered. In this case to justify flexible pavement, benefit cost ratio should be carried out. Time and distance related congestion factors mentioned in Table 10 of IRC: SP: 30-2009 are used. Benefit cost ratio is calculated and presented in Table 5. Benefit analysis has been calculated based on total project cost of both pavement options, annual maintenance cost, Vehicle Operating Cost (VOC) as per provision of IRC: SP 30 -2009. Table 5 Benefit Cost Ratio Benefit-Cost Ratio Case Two Lanes Vs Case I (Flexible) Two Lanes Vs Case II (Rigid) 1.206 1.247 Benefit cost Ratio is found to be highest for the case of rigid pavement. Therefore, rigid option is best viable option. It is found from past studies in India and abroad that up to 15% fuel saving when vehicles are plying on rigid 34 INDIAN HIGHWAYS MAY 2019 Fig. 2 Benefit Cost Ratio From Fig. 2, it is found that benefit cost ratio is more for the case rigid pavement higher than that of rigid pavement for 100 percent fuel consumption. B/C is increasing with decreasing fuel consumption with negative slope i.e., additional saving for using rigid pavement option. This increases benefit cost ratio. 5.1.2 Sensitivity Analysis Sensitivity analysis has been carried out varying improvement cost from 85 % to 115% and benefit cost ratio is presented in Table 6. Table 6 B/C Ratio Various Traffic and Cost Proportion Traffic and Cost B/C Ratio for Flexible Pavement 100% Traffic and cost 1.206 Traffic 85% 1.202 Traffic 115% 1.137 Traffic 85% and cost 115% 1.045 Cost 85% 1.419 Cost 115% 1.049 B/C Ratio for Rigid Pavement 1.247 1.22 1.234 1.063 1.467 1.084 From Table 6, it is found that benefit cost ratio is more than 1 for all scenario and hence, it is a viable option and may be recommended for rigid pavement option. 5.2 Case Study 2 Pavement option study has been carried out as per Flow Chart presented in Fig.1. Default mode of pavement type is rigid as per MORTH Circular- MORTH Circular:RW/NH-33044/31/2014/S&R (R) (Pt) dated 4 August 2014. Green House gas reduction has been calculated using ROADEO Software and summarized results presented in Table 7. TECHNICAL PAPER Table 7 Green House Gas Reductions Case Case 1 Flexible Pavement Option Case 1 Rigid Pavement Option Reduction in Green House Gas Emission in Greenhouse Gas Term CO2 (Ton) Emission Per km of Road 5320 4140 28.1% From Table 7, it is found that rigid pavement is better option considering greenhouse gas reduction. Therefore, rigid pavement option is better choice. Pavement Cost (Bituminous, granular layer and subgrade) has been found out Rs. 48.05 million per km for flexible pavement and Rs. 56.86 million for rigid pavement. Difference in cost is 18.34% which is comparison within 20%. Therefore, choice of flexible pavement may be considered. For life cycle costing, only major pavement components have been considered for analysis. LCC per km of road is presented in Table 8. Table 8 Life Cycle Cost Analysis Life Cycle Cost Per Km (Rs) Remarks Case 1 Flexible Pavement Option 75,922,430 - Case 1 Rigid Pavement Option 69,085,576 Life cycle of rigid pavement is 9.9% cheaper than that of flexible pavement. Therefore, rigid pavement option is final recommendation. Case As per MORTH Circulars and Table 8, Rigid pavement option is the best solution. Therefore, pavement option may be completed in this stage and no further analysis is required. 6.CONCLUSION Road construction projects have been implemented all over India and other countries as part of the national development plan. Roads are one of the country’s basic infrastructural facilities where high amounts of budget allocated every fiscal year planning period. Since the cost comprises of a large portion of government investment, a careful evaluation of the alternatives is utmost importance to make the light choice for a particular project. In the history of India road development program, almost all of the road pavements are rigid presently, and it demands high investment. In view of the emerging cement factories and the availability of cement in India, it is practical to consider rigid pavement as default mode of construction. Relative to this, the research work has been conducted with the main objective of identifying the cost and benefit of rigid and flexible pavements with Real case studies. The research work had been focused on the specific objectives to determine and compare the life cycle costs of rigid and flexible pavements and to investigate all other qualitative merits of rigid and flexible pavement. To achieve these objectives, design and specifications, observations and investigations of the actual pavement construction projects, evaluation of life cycle costs. Therefore, it is suggested that Cement Concrete Pavement (CCP) shall be used in pavement construction based on Benefit Analysis, Initial Construction, Greenhouse gas reduction, Life Cycle Cost, Roads, Maintenance and Rehabilitation, Pavement Alternative. Based on the present research work, following conclusions may be drawn as presented here in. • MORTH Circulars should be used for pavement option studies; • Rigid pavement may be considered for initial pavement type; • Greenhouse gas emission of both pavement options, initial pavement cost variation, life cycle cost and benefit cost ratio as per Codal Provision (IRC:SP 30 – 2009) shall be studied for each pavement option and final pavement option should be recommended based on these values; and • For Government interest, Pavement option may be terminated after conducting life cycle cost analysis but this study will be excluded the benefit of road users in term of vehicle operating cost. This includes 15-20% total transportation cost. Benefit cost ratio may be considered for pavement option study. Therefore, it is suggested that pavement option may be carried up to benefit cost analysis. Benefit cost analysis involves 100 % total transportation cost which consider both the interest of Government Agency and road user. REFERENCES i. AASHTO (1993) Guide for Design of Pavement Structures. ii. Cement Manufactures Association (2000). Handbook on Cement Concrete Road, New Delhi. iii. Cement Manufactures Association (1997). Study of fuel savings on cement concrete road as compared to flexible pavement, New Delhi iv. IRC: SP 30-2009 Manual on Economic Evaluation. INDIAN HIGHWAYS MAY 2019 35 TECHNICAL Announcement PAPER 26th World Road Congress ABU DHABI 2019 “Connecting Cultures Enabling Economies” 6th to 10th October, 2019 The 26th World Road Congress will be held in Abu Dhabi, United Arab Emirates, on October 6th-10th, 2019, under the theme “Connecting Cultures, Enabling Economies”. The Congress programme features the presentation of the results of the work undertaken by PIARC’s 22 Technical Committees and Task Forces, as well as a number of specialized session and workshops dealing with topics of current and future interest and a large exhibition in which road administrations, equipment and service providers, consultants and road-related organizations will be present. What more, Ministers from across the world will be present and share their views on key themes such as Artificial intelligence, Land Use Planning and future transport Network. If you would like more www.piarcabudhabi2019.org information please visit: World Road Association (PIARC) www.piarc.org Contact us: wrc2019@aipcrabudhabi2019.org A Five Day GIAN Course on Transportation in a High Tech, Automated and Connected Vehicle World September, 16-20, 2019 Organized by Transportation Division, Department of Civil Engineering National Institute of Technology Warangal (Telangana) The Ministry of Human Resource Development, Govt. of India has launched an innovative program titled “Global Initiative of Academic Networks (GIAN)” in Higher Education, in order to garner and transfer the best international experience to Indian audience. As part of GIAN, internationally renowned academicians and scientists are invited to augment the Country’s academic resources, accelerate the pace of quality reforms and elevate India’ scientific and technological capacity to global excellence. For any queries regarding registration of the course, please contact the Course Coordinators: Prof. CSRK Prasad, Transportation Division, DCE NIT Warangal (Telangana) Phone +91 870 2462117 Mob. +91 94403 47348, Email: csrk@nitw.ac.in 36 INDIAN HIGHWAYS MAY 2019 Dr. Arpan Mehar, Transportation Division, DCE NIT Warangal (Telangana) Phone +91 8702462125 Mob. +91 8332969421, Email: arpan@nitw.ac.in EXPRESSION OF INTEREST The Highway Research Journal (HRJ) is a reputed half-yearly periodical dedicated to research technical papers published by IRC for the benefit of Highway Professionals and researchers. About more than 11,000 complimentary hard copy of this periodical is dispatched through post to all IRC’s Life Members and also soft copy emailed to E- members as well as hosted on IRC website. The research papers are published in broad category of Pavement Engineering; Geotechnical Engineering; Traffic & Transportation Engineering; Bridge Engineering; Environmental Engineering; etc. In order to increase reach of this periodical across the globe, IRC intended to involve service of professional publishers/publishing House for entire process of papers invitation, their evaluation through subject wise Experts, printing, publishing and circulation to its members. For the aforesaid work Indian Roads Congress seeking Expression of Interest from the Publishing Houses/Publishers to take up the work of the publication of Highway Research Journal an half-yearly Technical Journal of the Highway Research Board of IRC. Interested Publishing Houses are requested to please send their EOI with the details of their printing work and Printing press etc. to Indian Roads Congress upto 10th May, 2018 on Email: irchrb@gmail. com GENERAL REPORT ON ROAD RESEARCH WORK DONE IN INDIA - CALL FOR SUBMISSION OF REPORTS ON ROAD RESEARCH CARRIED OUT DURING THE YEAR 2018-19 One of the objectives of the Indian Roads Congress is to disseminate and propagate technical knowledge and make Civil Engineers aware about National/ International research studies. To propagate importance of research and make available all research related information under single publication, IRC annually compiles research reports on Road & Bridge Research works being done in India, from various organisations like, MORTH, NHAI, CPWD, BRO, NRRDA, IITs, NITs, Engineering Colleges, Contractors, Consultants and Researchers. With the help of Central Road Research Institute, the compiled data is published by IRC as “General Report on Road Research Work Done in India” every year. Organisations concerned with research and development, construction, monitoring and maintenance of Road & Bridge works, Traffic, Transportation and Geotechnical Engineering, etc are requested to report the findings of Research & Development Projects carried out during the year 2018-19 in the relevant Performance printed at page no. 38-42 (same in also available on IRC Website www.irc.nic.in), which will prove beneficial to the members of the highway profession. The Reports may please be sent to the Secretary General, Indian Roads Congress, Kama Koti Marg, Sector 6, R.K. Puram, New Delhi–110 022 by post or e-mail at: irchrb@gmail.com latest by 15th July, 2019. INDIAN HIGHWAYS MAY 2019 37 GENERAL REPORT ONTECHNICAL ROAD RESEARCH PAPERWORK DONE IN INDIA IRC HIGHWAY RESEARCH BOARD GENERAL REPORT ON ROAD RESEARCH IN INDIA PROFORMA SHEET FOR REPORTING R&D WORK FOR THE GENERAL REPORT 1. Please furnish the report in the specified proformae (specimen copies enclosed), using separate proforma for each Project, appropriate to the Project Status, viz.: Proforma A: Proforma B: Proforma C: Proforma D: Projects Reported for the First Time & On-going Projects Completed Projects Research Projects Related to Thesis for Post Graduation/Ph.D. R&D Activity Report by Consultancy Firms/Contractors/ Concessionaires Annexure 1 Annexure 2 Annexure 3 Annexure 4 2. Please furnish report, in Proforma A or B, only on those projects which have led to some significant conclusions, or are expected to make R&D contribution of overall general interest. 3. Precise and concise information may be provided for EACH ITEM of the Proformae, in NOT MORE THAN 100 WORDS. Additional important information, if any, may be appended separately. 4. The following codes may be used for indicating the Section and Sub-Section Codes on Each Project Proforma: Section Section Code Sub-Section Sub-Section Code HIGHWAY PLANNING, DESIGN, MANAGEMENT, PERFORMANCE EVALUATION & INSTRUMENTATION Highway Planning, 1100 Design and Management Pavement Evaluation 1200 Design Road Transportation Management Road Pavement Management Maintenance Management Construction Management Test Track Research Software Development 10 20 30 31 32 40 50 Surface Characteristics Riding Quality Skid Resistance Structural Evaluation 10 20 30 40 Pavement Performance Pavement Performance Traffic Characteristics & Effects Material Characteristics Shoulders 10 20 30 40 Instrumentation Development Micro-Processor/Applications Mechanization 10 20 30 1300 Mechanization, Instrumentation & 1400 Micro-Processor Applications Section Section Code Sub-Section Sub-Section Code PAVEMENT ENGG. & PAVING MATERIALS Soil Stabilization, Local 2100 Materials and Low Volume Roads Flexible Pavements 2200 38 INDIAN HIGHWAYS MAY 2019 Soil Stabilization Local Materials Low Volume Roads Binders and Binder Improvement Materials and Mixes 10 20 30 10 20 GENERAL REPORT ON ROAD RESEARCH WORK DONE IN INDIA Pavement Design Construction Techniques Maintenance Aspects 30 40 50 Rigid Pavement 2300 Materials and Mixes Pavement Design Construction Techniques Maintenance Aspects 10 20 30 40 Composite Pavements 2400 Binders and Binder Improvement Materials and Mixes Pavement Design Construction Techniques Maintenance Aspects 10 20 30 40 50 New Material 2500 Pavements Bridges 10 20 GEOTECHNICAL ENGINEERING 3000 Landslides Ground Improvement Techniques Embankments and Slope Stability Roads and Embankments in Clay Areas Geo Synthetics & Geo Grids 10 20 30 40 50 BRIDGE ENGINEERING 4000 Structural Field Investigations Laboratory Investigations Foundation Investigations Innovative Accelerated Bridge Construction 10 20 30 40 TUNNEL ENGINEERING 5000 Structural Field Investigations Laboratory Investigations Foundation Investigations Innovative Accelerated Bridge Construction 10 20 30 40 Traffic Management Studies Travel Demand Forecasting Transportation Planning(Passenger & Freight) Transportation Economics Public Transport System Intelligent Transportation System/ Highway Traffic Management/ Toll Management System Traffic Engineering Studies 10 20 30 40 50 Accidents and Safety Traffic Noise Air Pollution Carbon Foot Print 10 20 30 40 TRAFFIC & TRANSPORTATION Planning & Management 5100 Safety & Environment 5200 INDIAN HIGHWAYS MAY 2019 60 70 39 GENERAL REPORT ON ROAD RESEARCH WORK DONE IN INDIA 5. PROJECT TITLE (i) In case of Proformae A and B, please indicate the same title as reported earlier. (ii) In case of sponsored projects, please indicate the name of the sponsoring organisation and Research Scheme number (e.g., MORT&H Research Scheme R-19), immediately after the project title. 6. DATE OF START/DATE OF COMPLETION: Please indicate month and year, e.g., May, 1988. In case of sponsored Research Scheme, only the Sponsoring Organisation should report completion of the project, and not the implementing Organisation(s). 7. LAST REPORT : Indicate the year of the last General Report on Road Research in India (GRRRI) in which the project was reported, e.g., for GRRRI 1988-89, indicate 1988-89. 8. ORGANISATION (S) : Please indicate the name of all involved organizations, in the case of multiorganisation project, using the following code to indicate the status of the organization with regard to the project: Reporting Organization (R); Sponsoring Organization (S); Coordinating Organization (C) & Implementing Organisation (I) If an organization has multiple status, the appropriate codes may be used together, e.g., (R,C), (R,S). 9. SCOPE AND OBJECTIVE: Please give a concise statement. In case of multiple objective projects, indicate each objective separately. 10. PRESENT STATUS AND PROGRESS: For Proforma A, if the project is on-going, please include a brief report on progress since the last report; for Proforma B, if the project is complete, please provide brief progress report for the project as a whole. 11. SUPPORTING DATA: Please indicate selected important supporting data or illustrations of special interest. Any correlations or charts developed may specifically be included. Please list the items enclosed. 12. CONCLUSIONS: Please indicate significant conclusions/interim conclusion. 13. SIGNIFICANCE / UTILISATION POTENTIAL: Please highlight only special aspects. Under “Utilisation Potential”, also specifically indicate whenever the development(s) / conclusion(s) are regarded appropriate for consideration by the IRC. 14. LIMITATIONS OF CONCLUSIONS / RECOMMENDATIONS FOR FURTHER WORK / FURTHER PROPOSED WORK: The limitations, if any, may be specifically indicated. Other aspects may be indicated wherever applicable. 15. REPORTS / PUBLICATIONS: Only reports/publications since last reporting may be included, alongwith bibliographical details, in the following order: Author(s) (Surname, followed by initial, in all capitals). Title of Paper/Article/Report/Book, Nature of Report (e.g., M.E./Ph.D. Dissertation, Interim/Final Report), Journal or Periodical (alongwith Vol. and No.) / Conference or Seminar Proceedings (alongwith the place where held) / Publishing Organisation, Month and Year of Publication. The report may be provided in not more than 500-600 WORDS. 40 16. Copies of publications, if published through a source other than IRC, may please be enclosed. 17. Wherever more than one sub-items are to be reported (e.g., in case of items No. 8, 9, 13, 15, etc. above, please number the sub-items 1, 2, 3, …… and list them one below the other. 18. In addition to 3 typed/computer print out copies, the report may also be supplied on floppy/CD to enable expeditious editing and compiling. Cooperation in this regard will be specially appreciated. The Window MS Word Software may please be used for the purpose. INDIAN HIGHWAYS MAY 2019 GENERAL REPORT ON ROAD RESEARCH WORK DONE IN INDIA Annexure 1 PROFORMA - A PROJECTS REPORTED FOR THE FIRST TIME & ON-GOING PROJECTS Section Code REPORTING ORGANISATION: Sub-Section Code 1 Project Title 1.1 Date of Start 1.2 Date of Completion (Targeted/Actual) 2 Organisation(s)* 3 Scope and Objectives 4 Methodology 5 Interim Conclusions/Conclusions/Supporting Data 5.1 Significance/Utilisation Potential 5.2 Limitations of Conclusions/Recommendations for further work/further proposed work 6 Reports/Publications 7 Further information/Copy of report can be obtained from: 7.1 Address 7.2 Mobile ________ Phone ________ Fax _______ 7.3 e-mail ID: ________ * Please indicate the appropriate organization code – (R), (S), (C), (I), (R,S), (R,C), etc. after each organization. Annexure 2 PROFORMA - B COMPLETED PROJECTS Section Code REPORTING ORGANISATION: 1 2 3 4 5 6 7 8 9 Sub-Section Code Project Title 1.1 Date of Start 1.2 Date of Completion (Targeted/Actual) Present Status and Progress 2.1 Status: Ongoing/Completed 2.2 Year of Last Report 2.3 Progress Further Findings/Conclusions/Supporting Data Limitations of Conclusions or Interim Conclusions Recommendations for further Work (if completed) Reports / Publications Recommendations for Dissemination/Revision of Codes/Specifications (if completed) Field Applications Further information/Copy of report can be obtained from 9.1 Address 9.2 Mobile _______ Phone ______ Fax _____ 9.3 E-mail ID:_________ * Please indicate the appropriate organization code – (R), (S), (C), (I), (R,S), (R,C), etc. after each organization. INDIAN HIGHWAYS MAY 2019 41 GENERAL REPORT ON ROAD RESEARCH WORK DONE IN INDIA Annexure 3 PROFORMA - C RESEARCH PROJECTS RELATED TO THESIS FOR POST – GRADUATION/Ph. D Section Code REPORTING ORGANISATION: 1 Sub-Section Code Project Title 1.1 Date of Start and Duration 1.2 Date of Completion Institution* Scope and Objectives Proposed Methodology (Type of Study, Laboratory/Field) Salient-Findings and Conclusion(s) Recommendations for Dissemination/Revision of Codes/Specifications (if completed) Further information/Copy of the report can be obtained from: 7.1 Address 7.2 Mobile ______ Phone ______ Fax _____ 7.3 E-mail ID ____________ 2 3 4 5 6 7 * Please indicate the appropriate organization code – (R), (S), (C), (I), (R,S), (R,C), etc. after each organization. Annexure 4 PROFORMA - D R&D ACTIVITY REPORT BY CONSULTANCY FIRMS/CONTRACTORS/CONCESSIONAIRES Section Code REPORTING ORGANISATION: Sub-Section Code 1 2 3 4 5 6 7 8 Project / Activity Title 1.1 Date of Start and Duration 1.2 Date of Completion (Actual/ Targeted) Organisation(s)* Special Situations/ Problems faced During Investigations/ Constructions: Methodology / Procedure adopted for solving the Problems: Any New Materials/ New Technologies if Adopted: Performance of such New Materials/ Technology: Additional R&D / Work required in this area: Further details can be obtained from: 8.1 Address 8.2 Mobile _________ Phone ________ Fax _________ 8.3 e-mail ID: ______ * Please indicate the appropriate organization code – (R), (S), (C), (I), (R,S), (R,C), etc. after each organization. 42 INDIAN HIGHWAYS MAY 2019 MoRT&H CIRCULAR INDIAN HIGHWAYS MAY 2019 43 MoRT&H CIRCULAR 44 INDIAN HIGHWAYS MAY 2019 MoRT&H CIRCULAR INDIAN HIGHWAYS MAY 2019 45 MoRT&H CIRCULAR 46 INDIAN HIGHWAYS MAY 2019 MoRT&H CIRCULAR INDIAN HIGHWAYS MAY 2019 47 LIST OF IRC ACCREDITED NEW MATERIALS/ TECHNIQUES/EQUIPMENT/ PRODUCTS (valid as on 01 May, 2019) The Committee for Accreditation of New Materials and Techniques formed under the aegis of Highway Research Board of Indian Roads Congress (IRC) gives accreditation to patented or new materials / technologies / equipment, developed in India/ abroad for being used on trial basis. These new materials are evaluated as per recognized National / International Specifications. The list of IRC accredited new materials/techniques/equipment/products, valid as on 01 May, 2019 is as mentioned below: S. No. 1 Name of the New Material/ Usage Technology/ Equipment/ Product “SUNEXT 8” – Aliphatic, Acrylic Protection of exposed concrete structures Based, Anti-carbonation Coating 2 “vSAFE” (Advanced Polymer) New To promote road safety and efficiency of road users Gen Road Signage 3 “Ultracure” - white pigmented wax based curing compound for concrete Corrkil E System Fluoro Polymer Based Coating System SikaBit T 130 SG Primeline Standard IMS K100 4 5 for use in concrete structures For the painting of Steel Bridges For the painting of Steel Bridges 15 16 17 18 19 20 21 22 23 24 Bridge Deck Waterproofing Membrane Thermoplastic Road Marking Material Concrete Upgrading Admixture for Cementitious and Rigid Pavement Construction Roller Barrier Used to absorb shock, impact of the plying vehicle on the road and ultimately minimize accidents/fatalities Shaliplast LW++ Integral Waterproofing cum binder corrosion inhibitor for Bridges & Reinforced Concrete HMVG-50 stiffer/harder grade binder to prevent pavement failure due to increased loads Portadeck Heavy Duty Composite Access Mats and Floors/Working Platforms Automark For use in safety of roads, bridges and structures Asphaltoseal On concrete decks for waterproofing purpose in lieu of mastic asphalt under BC overlay Processed Steel Slag Alternate Aggregate for Flexible Pavements Monopol 456 HB Anti-Carbonation Coating for Bridges and Concrete Structures EPCO KP 200 Bipolar Concrete Penetrating Corrosion Inhibitor Monopol Low Viscous Grout Material RBI Grade-81 Stabilizer used in Road Construction HZL Process Waste, Jarofix Used as filler material in road embankments Imperial Smelting Furnace (ISF) Slag As fine and coarse aggregates & as filler for road embankment Iter PPS 1000 CV Bitumen additive for use in flexible pavement Superplast Bitumen additive for use in flexible pavement Trolex NCAT NTO Apparatus to measure Asphalt content by the Ignition method 48 INDIAN HIGHWAYS 6 7 8 9 10 11 12 13 14 MAY 2019 S. No. 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 Name of the New Material/ Technology/ Equipment/ Product Asphalt Content Tester (AIM 590) i-lite Reflective Pavement Marker Usage It is used for hot mix asphalt paving mixtures and pavement samples It is based on 100% indigenously developed technology whose properties are in conformity with ASTM D 4280-94 Penetron Admix® (Crystalline Used for making the concrete permanently sealed against the Waterproofing Admixture) penetration of water or liquids GUJCON-CRF Nylone 6 Fibre Used as a secondary reinforcement in concrete roads and bridges Waelz Kiln (WK) Slag Used in embankment, sub-base and bituminous/concrete pavement Evocrete®ST Acts as an enhancer for the hydration process and increases water impermeability and resistance to thermal/salt/acid/frost submitted to the committee ZycoTherm Warm mix additive Geopolymer Concrete Eco-friendly Concrete which replace cement in concrete Secugrid 30/30Q1 Used for base reinforcement of road loading to longer life or reduction of thickness of aggregate & bitumen layer in pavement CMR Bitplast Waste plastic impregnated and concentrated bitumen tablets for laying flexible pavements Asian Paints Smart Care APP Polymer Used as a Waterproofing/ damp proofing membrane in horizontal and Modified 4mm Membrane vertical both directions Asphalto Mastic Bitumen Membrane Waterproofing for bridge deck Treated Drill Cuttings Used as a filler in construction work Barrier System (Ezy Guard SMART) Used to secure the W-beam rail to the Z-Posts, eliminating the MASH TL3 requirement for blocking pieces and rail stiffening plates Barrier System (Ezy Guard HC) MASH TL4 KSI Roller Safety Barrier Mazaa AC Pipes Coir Geo Textile Eliminator – Bridge Deck Waterproofing System [MMA Resin Based Bridge Deck Waterproofing System] 3M Median Markers Roadstab Technology 3M Vertical Delineators Used to secure the thrie beam rails to the posts, eliminating the requirement for blocking/offset pieces and rail stiffening plates Used for Traffic Island Toll Entrance, Terminal, Intersections, etc Used for sewerage and drainage Used in construction and maintenance of roads and embankments Waterproofing System Improves visibility of road safety devices Soil Stabilizer used in construction of roads Eliminating device for improving visibility road shoulders and median opening Aluminum Backed Prismatic Reflective Highly flexible and conformable Retro reflective sheeting Sheeting Shalipatch EC For crack repairing concrete and bituminous roads APP Double Layer Membrane Bituseal For flyover waterproofing and replacement of mastic wearing coat DR Bridge Deck GID Pavement Markers Safety device used on roads Superthermolay APP Membrane Used for bridge deck waterproofing applications Shaliplast Asphaltomastic Used for bridge deck waterproofing applications INDIAN HIGHWAYS MAY 2019 49 ADVERTISEMENT 50 INDIAN HIGHWAYS MAY 2019 . . ! !/ 0 # / 1 # 2 3#4 5 !6 7 5 8 9 5 !6 5 # !6 : 1 4 4 #5 ;; 5 +7 < # = > 94 2 0 # :#4 7/ *920:7, 2 4 5 4 IB; J 3+ +3J 0:7 ! '$%" > ! A'$% < 4 4 5 1 4 4 ## & 5 1 # ## 4 4 # #4 #4 < 5 A%%13 4 A@) 4 25 # B ; 5 ?. @ @A @) @$$ #4 2 1 4 1 2 BC 5 3 1 94 !<27; D 5 # 51 E# 5 4 F ! # 2 # #4 * ! , 1 2 *2, G7 E # !#4 : GH% ## # 4 5 # 4 # # 4 !; # ! 94 # 1 ! B ! " # $$%%$ & '()%$"")$)%%% *+,' - . . . Delhi Postal Registration No under ‘u’ Number At Lodi Road, PSO on dated 28-29.04.2019 ISSN 0376-7256 Newspaper Regd. No. 25597/73 Indian Highways `20/- dl-sw-17/4194/19-21 u(sw)-12/2019-2021 licence to post without prepayment published on 22 APRIL, 2019 Advance Month, MAY, 2019 MAY, 2019 Indian Highways Volume : 47 Number : 5 Total Pages : 52 A View of Eastern Peripheral Expressway in Haryana Edited and Published by Shri S.K. Nirmal, Secretary General, Indian Roads Congress, IRC HQ, Sector-6, R.K. Puram, Kama Koti Marg, New Delhi - 110 022. Printed by Shri S.K. Nirmal on behalf of the Indian Roads Congress at M/s. Aravali Printers & Publishers Pvt. Ltd. https://www.irc.nic.in