IVANHOE MINES
Oyu Tolgoi Project
Project No. A2MW
Concrete Batch Plant
Specification
Document No. SP-15-007
Rev. 0
November 14, 2006
Document SP-15-007
Ivanhoe Mines Mongolia Inc., XXK
Oyu Tolgoi Project
Project No. A2MW
Page 2 of 11
Rev 0
CONCRETE BATCH PLANT SPECIFICATION
This document has been revised as indicated below. Changes after revision 0 are identified by vertical bars at
the right side of the page, with additions being underlined. Please replace all pages of this specification and
destroy the superseded copies.
Rev
No.
0
Originator
(name/initials)
Bill Thron
Rev
Date
11/14/06
  New Issue
Revision Description
Issued for Construction
Ent
APPROVALS
ORIGINAL SIGNED BY
Client Approval:
Steve Garcia
Project Manager:
Michael Chalker
Engineering Manager:
Henry Hwa
Site Field Engineer:
David Kim
Site Manager:
Dave Williams
Originator:
Gilbert Foucault
 Entire Specification Re-issued
DATE
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BATCH PLANT SPEC.DOC
ARCHITECTURAL
Document SP-15-007
Ivanhoe Mines Mongolia Inc., XXK
Oyu Tolgoi Project
Project No. A2MW
Page 3 of 11
Rev 0
CONCRETE BATCH PLANT SPECIFICATION
TABLE OF CONTENTS
1.0 GENERAL ............................................................................................................................................... 4
1.1 INTRODUCTION..................................................................................................................................... 4
1.2 PURPOSE ............................................................................................................................................... 4
2.0 CODES AND STANDARDS ................................................................................................................... 4
3.0 REFERENCE DOCUMENTS .................................................................................................................. 5
3.1 PROJECT SPECIFICATIONS ............................................................................................................... 5
3.2 ATTACHMENTS .................................................................................................................................... 5
4.0 QUALITY ASSURANCE/QUALITY CONTROL ..................................................................................... 5
5.0 DOCUMENTATION ................................................................................................................................ 6
6.0 BATCH PLANT ....................................................................................................................................... 6
7.0 MATERIALS............................................................................................................................................ 8
8.0 MATERIAL STORAGE AND HANDLING .............................................................................................. 9
8.1 CEMENT STORAGE .............................................................................................................................. 9
8.2 STORAGE OF AGGREGATES .............................................................................................................. 9
9.0 CONCRETE DELIVERY ....................................................................................................................... 10
10.0 FACILITIES INSPECTION AND CALIBRATION ............................................................................... 10
11.0 RECORDS .......................................................................................................................................... 10
12.0 REPORTS ........................................................................................................................................... 11
13.0 LIAISON WITH ON-SITE TESTING LABORATORY ......................................................................... 11
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Document SP-15-007
Ivanhoe Mines Mongolia Inc., XXK
Oyu Tolgoi Project
Project No. A2MW
Page 4 of 11
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CONCRETE BATCH PLANT SPECIFICATION
1.0
1.1
GENERAL
INTRODUCTION
This specification provides the requirements for production and delivery of ready-mixed
concrete for the Ivanhoe Mines Oyu Tolgui project in Mongolia.
1.2
PURPOSE
This specification provides the requirements for establishing an on-site Batch Plant for
production and delivery of ready-mixed concrete which includes:
2.0

Facilities for receiving, storing, handling, and proportioning materials required to
produce concrete.

Delivering concrete in appropriate transporting vehicles to various areas of jobsite.

Facilities and equipment for testing the concrete produced.

Facilities at the Batch Plant for the operating personnel including offices, break rooms,
toilets, etc.
CODES AND STANDARDS
The following codes and standards to the extent specified herein form a part of this
specification. When an edition date is not indicated for a code or standard, the latest edition
in force at the time of CONTRACTOR’S proposal submittal shall apply.
American Concrete Institute (ACI):
ACI 304R
Guide for Measuring, Mixing, Transportation and Placing Concrete
American Society for Testing and Materials (ASTM):
ASTM C94
Standard Specification for Ready Mixed Concrete
National Ready Mixed Concrete Association (NRMCA):
NRMCA QC 3
Quality Control Manual: Section 3, Plant Certifications Checklist:
Certification of Ready- Mixed Concrete Production Facilities
International Organization for Standardization (ISO):
ISO-9001
Quality Systems - Model for Quality Assurance in Design,
Development, Production, Installation and Servicing
ISO-9003
Quality Systems - Model for Quality Assurance in Final
Inspection and Test
ISO-9004
Quality Management and Quality System Elements - Guidelines
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ARCHITECTURAL
Ivanhoe Mines Mongolia Inc., XXK
Oyu Tolgoi Project
Project No. A2MW
Document SP-15-007
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3.0
REFERENCE DOCUMENTS
The following reference documents to the extent specified herein form a part of this
specification. When an edition date is not indicated for a document the latest edition in force
at the time of CONTRACTOR'S proposal submittal shall apply.
3.1
3.2
4.0
PROJECT SPECIFICATIONS
DC-10-001
General Site Conditions
DC-10-002
Civil Design Criteria
DC-15-001
Structural Design Criteria
DC-35-001
Dust Control Design Criteria
DC-35-002
Fire Protection Design Criteria
DC-35-004
Plumbing Design Criteria
DC-65-001
Electrical Design Criteria
CS-15-002
Structural Concrete
ATTACHMENTS
1
Location of concrete batch plant
2
Summary of the Concentrator Site geotechnical work, Oyu Tolgoi
QUALITY ASSURANCE/QUALITY CONTROL
The CONTRACTOR shall have in effect at all times, a QA/QC program which clearly
establishes the authority and responsibility of those responsible for the quality system.
Persons performing quality functions shall have sufficient and well defined authority to
enforce quality requirements that initiate, identity, recommend and provide solutions to
quality problems and verify the effectiveness of the corrective action.
CONTRACTOR'S proposed quality system shall fully satisfy all the elements of ISO 9001,
“Quality Systems - Model for Quality Assurance in Design, Development, Production,
Installation and Servicing”; ISO 9003 - “Quality Systems - Model for Quality Assurance in
Final Inspection and Test”; and ISO 9004, "Quality Management and Quality System
Elements - Guidelines". The quality systems shall provide for the planned and systematic
control of all quality-related activities performed during execution of the work.
Implementation of the system shall be in accordance with the CONTRACTOR'S Quality
Manual and Project Specific Quality Plan, which shall both together with all
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ARCHITECTURAL
Ivanhoe Mines Mongolia Inc., XXK
Oyu Tolgoi Project
Project No. A2MW
Document SP-15-007
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CONCRETE BATCH PLANT SPECIFICATION
related/referenced procedures be submitted to the OWNER’s Project Management Team
(PMT) for review, comment and approval.
The OWNER’s PMT QA/QC department reserves the right to inspect materials and
workmanship at all stages of concrete production and delivery and to witness any or all tests.
The PMT QA\QC department would have the authority to reject, inspect or modify any
portions of the work and have unrestricted access to the plant and records. There will also be
a third party testing agency performing field and material testing for both the PMT and the
batch plant CONTRACTOR. Results and Records will be made available to all parties.
The CONTRACTOR, 30 days after award, but prior to the pre-inspection meeting, shall
provide the OWNER with a copy of the Inspection plan for review and inclusion of any
mandatory OWNER witness points.
5.0
DOCUMENTATION
The Batch Plant CONTRACTOR shall submit the following in accordance with the Data
requirements section 8.0 of the contract:
6.0

Overall plant layout, batch plant system description, equipment and operation manuals
and details including automation, computerization, maintenance manuals and 2 year
spare parts list.

All operation and maintenance manuals for the concrete transportation equipment
including mixer trucks and pump trucks and 2 year spare parts list.

Operator qualifications and certificates.

All records and reports as described in Sections 11.0 and 12.0 respectively

Concrete Batch tickets
BATCH PLANT
The batch plant, including storage facilities, and delivery trucks shall meet the requirements
of ASTM C94 and ACI 304R Chapters 2, 3, and 4. The batch plant, including storage
facilities, and delivery trucks shall be capable of producing quality concrete, and shall be able
to become certified in accordance with the certification process of NRMCA QC 3. The
CONTRACTOR shall be fully responsible for the quality of the concrete, up to the discharge
end of the delivery equipment chute.
The batch plant shall include, but not be limited to:

Full automation

Full computerization

Full segregation of materials

Shaded and covered areas for materials to prevent contamination by rain, dirt, sand,
mud, air borne chlorides, dust and other contaminants
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ARCHITECTURAL
Ivanhoe Mines Mongolia Inc., XXK
Oyu Tolgoi Project
Project No. A2MW
Document SP-15-007
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CONCRETE BATCH PLANT SPECIFICATION

Facilities for washing and cleaning materials with adequate drainage

Automatic compensation for moisture in fine aggregate

Adequate production capacity

Winterization and Heating for cold weather operations

Heated water and heated aggregates for cold weather production.

Admixture storage facilities with spill containment plan.

Adequate heated storage for thawing admixtures during winter.

Wash Water \ Settling ponds for concrete wash out

Loaders for filling aggregate bins and Handling Chemical and Cement materials.

Capability to measure and adjust the concrete temperatures during batching in cold and
hot weather to meet the minimum and maximum concrete temperatures.

Water holding tanks capable of storing 4 hours of operation within enclosure with
heating for winter operations.

Silos capable of storing 200 tons and 4 types of cement.

Ability to provide computer print out of mix design together with actual mix

Ability to provide computer calculation and print out of actual water/cement ratio
The CONTRACTOR shall ensure that the concrete is mixed in a fully automatic
computerized batching plant.
The mixing pan capacity shall be selected to ensure that the required maximum production
can be comfortably achieved.
The weights of fine and coarse aggregates shall be automatically adjusted to allow for any
free water contained in them. Accordingly, the amount of water to be added shall be reduced
by this amount of free water contained in the aggregates.
The quantities of all materials for concrete shall be charged to the pan by weight.
Admixtures that have been approved as part of the mix design shall be added by approved
automatic dosing equipment capable of feeding fixed quantities into the mixing water before
the water is charged into the mixer.
The measuring equipment shall be maintained in a clean, serviceable condition.
Mixing shall continue until uniform distribution of materials and uniformity of consistency
and color is obtained.
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Ivanhoe Mines Mongolia Inc., XXK
Oyu Tolgoi Project
Project No. A2MW
Document SP-15-007
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The CONTRACTOR shall ensure that the materials used for each batch in the mixer do not
exceed the MANUFACTURER'S rated capacity for the machine. The machine shall be kept
clean, free of any residual material after depositing each batch of concrete and the mixer pan
drum shall be washed and cleaned out immediately following the completion of each
concreting operation.
The batch plant shall be able to provide a computer printout batch ticket of the following for
each truck:
7.0

Serial number of ticket

Contractor’s Name

Date

Truck number

Grade of concrete

Amount of concrete

Amount and type of cement(s) and any supplementary cements

Information necessary to calculate total mixing water added (free water on aggregates,
water, and ice batched at plant)

Type, brand, and amount of admixtures

Weights of fine and coarse aggregate

Time loaded or time of first mixing of cement and aggregates

Reading of revolution counter at the first addition of water

Time and reading of revolution counter at the time of the start of discharge of the load
of concrete.

Unique location identification as provided by the structure number and concrete
placement number

Signature or initials of batch plant representative

Signature of the Contractor’s Representative for Acceptance of the Load?
MATERIALS
All materials required for the production of ready-mixed concrete shall in accordance with
Project approved Concrete Mix Designs.
All materials must be selected from the approved project sources and listed as part of the
Concrete Mix Designs. The CONTRACTOR shall record on a daily basis the quantity of
materials received and consumed during production.
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Ivanhoe Mines Mongolia Inc., XXK
Oyu Tolgoi Project
Project No. A2MW
Document SP-15-007
Page 9 of 11
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CONCRETE BATCH PLANT SPECIFICATION
Records shall be maintained by the PMT QA/QC department and supplied to the batch plant
operator indicating:
8.0
8.1

VENDOR’S details pertaining to cement and admixtures, and test data of aggregates
and sands

Fully detailed data sheets showing all chemical and physical information

Recent test results (not older than three months)

Details of VENDOR’S Quality Assurance System

Details of VENDOR’S Quality Control procedures
MATERIAL STORAGE AND HANDLING
CEMENT STORAGE
Cement storage shall afford easy access for inspection and identification of each shipment in
accordance with test reports. It shall be used in the order in which it is delivered to the site.
Bagged cement shall be transported to the batch plant in the VENDOR’S original sealed bags
or containers and shall be stored in a dry, weather tight, properly ventilated covered structure,
with adequate provisions for preventing the absorption of moisture, and raised at least 150
mm off the floor to prevent deterioration. The storage shall be large enough to allow
sufficient cement to be kept to allow continuity of work. Not more than 10 small bags or 3
“Big Bags” shall be piled one on top of the other while stored at site. Suitable shading shall
be provided to limit the temperature to 40 C.
Temperature of cement stored in bulk silos shall not exceed 75 C. No cement shall be stored
on site for more than three months.
8.2
STORAGE OF AGGREGATES
The concrete plant shall at all times maintain sufficient quantities of each type of aggregate to
ensure continuity of work.
Each type and grade of aggregate shall be stored separately in bins; in such a manner that
segregation of the various size particles shall not occur. The floors of the bins shall be of
concrete or other approved material having sufficient slope to ensure adequate drainage of
aggregates before being used for concreting.
Strict precautions shall be taken to avoid contamination of aggregates by wind blown dust,
chlorides, etc.
Suitable shading shall be provided to control the temperature and any contaminations,
especially chlorides.
Storage bins shall be emptied and cleaned at regular intervals.
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Document SP-15-007
Ivanhoe Mines Mongolia Inc., XXK
Oyu Tolgoi Project
Project No. A2MW
Page 10 of 11
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CONCRETE BATCH PLANT SPECIFICATION
9.0
CONCRETE DELIVERY
Delivery Trucks shall be of revolving drum type, watertight, and so constructed that the
concrete can be conveyed and discharged into the pumps at site maintaining the uniform
distribution of materials throughout the mass. The drum shall be painted white and kept
clean to ensure maximum reflectivity.
The maximum size of batch in truck mixers shall not exceed the maximum rated capacity of
the mixer as stated by the MANUFACTURER and stamped in metal on the mixer.
On no account shall water from the concrete truck be used in the mix. Concrete trucks shall
have their water tanks completely disconnected from the drum.
Concrete temperature, when discharged in the formwork, shall not be more than 30 C. For
thick elements the temperature shall be less than 24 C. Thick elements shall be defined as
any concrete member that has both plan and cross sectional dimensions exceeding one meter,
and containing a total volume exceeding six cubic meters.
Acceptance of the concrete is dependent on field testing by the QA\QC department. QA\QC
representatives will have the authority to reject concrete based on field results, expiry of the
concrete for exceeding time restraints or slump loss.
10.0 FACILITIES INSPECTION AND CALIBRATION
At intervals not exceeding 90 days, all scales, volumetric devices, and dispensers of the batch
plant shall be inspected and calibrated. The accuracy of the measuring equipment shall be
within 3%. Normally;
Admixtures
+/- 3 %
Aggregates
+/- 2 %
Water \ Cement
+/- 1 %
At intervals not exceeding 90 days revolution counters shall be inspected and calibrated prior
to use for hauling or mixing concrete.
At intervals not exceeding 90 days, the batch plant mixers and mixer trucks shall be visually
examined to detect changes in condition due to accumulation of hardened concrete and
examined to detect wear of blades. Mixer blades shall be replaced when they have lost 10%
of their original height in accordance with NRMCA QC3. Restrictions shall conform to
requirements of ASTM C94. Documentation of these inspections will be kept and submitted
to PMT QA/QC once performed.
11.0 RECORDS
Records shall be maintained for the following:

Material certification reports received with all delivered materials (cement, aggregate,
and admixtures), as described in Section 8.0. Originals of these documents shall be
retained at the batch plant.
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BATCH PLANT SPEC.DOC
ARCHITECTURAL
Ivanhoe Mines Mongolia Inc., XXK
Oyu Tolgoi Project
Project No. A2MW
Document SP-15-007
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
Required testing of concrete produced at the batch plant will be preformed according to
the Project Specification, CS-15-002 Section 3.5. Originals of these test reports shall
be retained at the batch plant. All other testing will be performed by a third party
testing laboratory under contract to PMT QA/QC department.

Records of maintenance of all batch plant and delivery equipment based on
MANUFACTURER'S recommendations on a 90 day basis.

Records of all required inspections and calibrations, as described in Section 12.0.

Printed batch records retained for each load of concrete submitted yearly or upon
request to the QA\QC department.
12.0 REPORTS
The CONTRACTOR shall provide a detailed weekly summary report to the Owner’s PMT
team pertaining, but not limited to, the following:

All aspects of material acquisition, transporting, storage, handling, batching,
production of concrete and transportation of the concrete to the jobsite.

The operating aspects of plant equipment, computerization and any problems
encountered during the production of concrete.

The liaison aspects of CONTRACTOR’S work with the mix design specialist and the
testing laboratory.

Deviations in concrete mix production from the approved mix design and
documentation.
13.0 LIAISON WITH ON-SITE TESTING LABORATORY
All material tests will be performed by an on-site testing laboratory. The CONTRACTOR
shall facilitate the work of, and cooperate with the laboratory inspectors at all time. The
Owners PMT QA\QC department shall govern both testing agencies.
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