DIVISION 3; SECTION 03 30 00
CAST-IN-PLACE CONCRETE
PART 1
1.1
1.2
1.3
GENERAL
(Areas in red are to be adjusted to fit necessary job requirements)
SUMMARY
A.
Section Includes:
1.
Cast-in-place concrete for [roads] [bridges] [aviation pavements] [building frame
members] [shear walls] [elevator shaft walls] [foundation walls] [elevated slabs]
{structural lightweight slab on metal deck} [slabs on ground] [structures requiring very low to low permeability concrete] [equipment pads] [parking garage
topping slabs] [wastewater structures] {food processing} [and] [agricultural concretes].
B.
Related Sections:
1.
Division 01: Administrative, procedural, and temporary work requirements.
2.
Section 03 11 00 - Concrete Forming.
3.
Section 03 20 00 - Concrete Reinforcing.
4.
Section 03 31 23 - High Performance Structural Concrete.
4.
Section 03 35 00 - Concrete Finishing.
REFERENCES
A.
American Concrete Institute (ACI):
1.
301 - Specifications for Structural Concrete.
2.
305 - Hot Weather Concreting.
3.
306.1 - Standard Specification for Cold Weather Concreting.
4.
308.1 - Standard Specification for Curing Concrete.
5.
318 - Building Code Requirements for Structural Concrete.
6.
332 – Residential Concrete
B.
ASTM International (ASTM): Test Methods cited
C.
American Association of State Highway and Transportation Officials (AASHTO); Test methods cited.
SUBMITTALS
A.
Submittals for Review:
1.
Product Data:
a.
Submit product standards, physical and chemical characteristics, technical specifications, limitations, and general recommendations regarding each material.
b.
Submit data on joint devices, attachment accessories and admixtures.
B.
Quality Control Submittals:
1.
Design data:
2.
Certificate of Compliance: Certify that Products furnished meet or exceed specified requirements.
C.
Sustainable Design Submittals:
1.
Recycled Content: Certify recycled material content for recycled content products.
1 of 6
V.02-14
2.
3.
4.
5.
1.4
1.5
Regional Materials: Certify source for local and regional materials and distance from
Project site.
Rapidly Renewable Materials: Certify materials made from plants harvested within a
ten-year or shorter cycle.
Water consumption savings
Carbon Reduction Realized
QUALITY ASSURANCE
A.
Manufacturer Qualifications: Company specializing in manufacturing products specified in this
Section with minimum 3 years [documented] experience.
B.
Concrete Contractor Qualifications: Company specializing in placing and finishing cast-inplace high performance concretes with minimum 2 years [documented] experience.
1. At least one ACI Certified Concrete Flatwork Finisher during concrete placement and finishing.
C.
Mockup:
1.
Construct mockup for architectural concrete surfaces receiving special treatment or finish as result of formwork.
2.
Size: Sufficient to show special treatment or finish required.
3.
Locate [where directed.] [where indicated.]
4.
Approved mockup may [not] qualify as part of Work.
D.
Perform Work in accordance with [ACI 301] [and] [ACI 318] for mixing, transportation, placing and consolidation of concrete.
E.
Perform work in accordance ACI 305.1 for hot weather concrete placement and protection.
F.
Perform work in accordance ACI 306.1 for cold weather concrete placement and protection
G.
Acquire cement and aggregate from one pre-qualified source throughout work.
PROJECT CONDITIONS
A. Environmental Requirements: Maintain concrete temperature after installation per ACI Standards.
B. Follow ACI 301 Standard for effect of concrete and air temperatures, relative humidity, sun exposure, and wind speed on the rate of evaporation of surface moisture from concrete.
1.6
COORDINATION
A.
PART 2
2.1
Coordinate placement of joint devices with erection of concrete formwork and placement of
form accessories.
PRODUCTS
MANUFACTURERS
A.
Contract Documents are based on ekkomaxx™ by CeraTech USA
(www.ceratechinc.com/products/ekkomaxx)
2 of 6
V.02-14
B.
2.2
Substitutions: [0r equal per 2.2 A. ff.]
STRUCTURAL CONCRETE MATERIALS
A. Structural Concrete to conform to: ASTM C1157, or ASTM C1600 Type VRH or URH as marketed by CeraTech USA. Material shall exhibit the following characteristics;
1.
2.
3.
4.
5.
6.
6.
7.
8.
9.
10.
11.
12.
B.
2.3
Aggregate: Type recommended by cementitious concrete manufacturer; 3/8 inch (10 mm),
1/2 inch (13 mm), 3/4 inch (19 mm), or 1 inch (25 mm) clean washed fractured stone.
ADMIXTURES
A.
2.4
Effectively placed in ambient temperatures ranging from 30° to 120° F following traditional post hydration curing practices.
Mixed and placed similar to traditional Portland concrete,
1 to 5 hours working time or as specified.
Finished via standard concrete finishing practices.
Achieve compressive strengths per design specifications.
Realize >70% of 28 day strength in 7 days.
Moderate sulphate resistance.
ASR Resistant
Resistant Microbiological Induced Corrosion (MIC)
Capable to receive coatings after 3 days
Concrete to feature Very Low to Low permeability per ASTM C 1202
Recycled material content of binder to exceed 90%
Utilize a W/C ratio of <.28
Air Entrainment: ASTM C260.
1.
MicroAir from BASF per manufacturer's instructions.
2.
Substitutions require approval by cement manufacturer (CeraTech USA).
CAST-IN PLACE STRUCTURAL CONCRETE MIX
A.
Provide concrete mix design to met or exceed the project criteria for CeraTech USA approval:
(Input only recommended criteria needed to meet project spec, delete unnecessary
test requirements)
CHARACTERISTIC
TEST METHOD
Compressive Strength
ASTM C39
28 days
Flexural Strength
RESULTS-NET /
RESULTS EXTENDED
[_____) psi ([_____) MPa)
ASTM C78
28 days
[______] psi ([______] MPa)
Splitting Tensile Strength @ 28 days
ASTM C496
Modulus of Elasticity @ 28 days
ASTM C469
Coefficient of Thermal Expansion @ 28 days
AASHTO TP 60
3 of 6
V.02-14
Length Change, Percent of total length @ 28
days dry cure (Air Storage)
ASTM C1600
Load Bearing Strengths
Dependent Upon Mix Design
Foot Traffic
Mix Design Dependent
Wheeled Traffic
Mix Design Dependent
Stripping Formwork
24 to 72 hours
Curing
Approved Curing Compound or Evaporative Retarder
B.
Admixtures: Include admixture types and quantities indicated in concrete mix designs only
when approved by cement manufacturer and Architect/Engineer and in accordance with the
cast-in-place high performance structural concrete manufacturer's installation/mixing instructions.
C.
Transit Mixed Concrete: Mix and deliver concrete in accordance with manufacturer's producer
guide and ASTM C94
D.
Site Mixed Concrete: Mix concrete in accordance with manufacturer's instructions [and ACI
318].
PART 3
3.1
3.2
EXECUTION
EXAMINATION
A.
Verify requirements for concrete cover over reinforcement.
B.
Verify anchors, seats, plates, reinforcement and other items to be cast into concrete are accurately placed, positioned securely, and will not interfere with placing concrete.
PREPARATION
A.
Site Preparation: Construction site should be prepared in accordance with ACI Guidelines for
placement of structural concrete.
B.
In locations where new concrete is doweled to existing work, drill holes in existing concrete;
insert steel dowels to ensure proper performance.
C.
Remove debris and ice from formwork, reinforcement, and concrete substrates.
4 of 6
V.02-14
D.
Remove water from areas receiving concrete before concrete is placed.
E.
When bonding to existing concrete;
1.
Prepare existing concrete by cleaning with hydro blast, or mechanical means to ensure
removal of all laitance, coatings, and unsound materials.
2.
Prepare host concrete to SSD condition (Saturate Surface Dry) prior to material placement.
3.3
MIXING INSTRUCTIONS
A.
3.4
Standard Mixing Procedures per C-USA Producer Guide, mix design to be determined and
verified prior to project start.
PLACING STRUCTURAL CONCRETE
A.
General: Working times based on ambient temperature, mix design, and total amount of
water.
1.
Working times are influenced by substrate, surface temperature, humidity, and repair
profile.
2.
Upon initial set, a broom finish can be applied. Upon final set, the material can be sawcut and/or drilled.
3.
Sanding and/or polishing to be done per manufacturer’s specifications.
4.
Do not re-temper. The addition of water to the surface of concrete will negatively affect
the materials final properties.
Clean all tools and equipment with water prior to the material reaching final set.
5.
B.
3.5
Place concrete in accordance with [ACI 301] [ACI 318].
CONCRETE FINISHING
A.
Provide formed (concrete surfaces to be left exposed] [concrete [walls] [columns]
[beams] [joists] [____]] with [smooth rubbed] [____] [sand float] [sack rubbed] finish
[as Scheduled in this section].
B.
Follow manufacturers (CERATECH) instructions for finishing materials and methods.
C.
Finish concrete floor surfaces in accordance with [ACI 301] [ACI 318].
D.
Wood float surfaces receiving [quarry tile] [ceramic tile] [terrazzo] with full bed setting system.
5 of 6
V.02-14
3.6
3.7
E.
Steel trowel surfaces receiving [carpeting] [resilient flooring] [seamless flooring] [thin set quarry tile] [thin set ceramic tile] .
F.
Steel trowel surfaces, which are indicated to be exposed.
G.
In areas with floor drains, maintain floor elevation at walls; pitch surfaces uniformly to drains
[at [1/8] [1/4] [____] inch per foot ([10] [20] [____] mm per m) nominal] [as indicated on
drawings].
H.
For concrete to receive coatings, prepare per coating manufacturers recommendations.
CURING AND PROTECTION
A.
Immediately after placement, protect concrete from premature drying, excessively hot or cold
temperatures, and mechanical injury.
B.
Protect concrete from freezing for minimum one day.
C.
Maintain concrete with minimal moisture loss at relatively constant temperature for period
necessary for hydration of cement and hardening of concrete.
D.
Cure floor surfaces in accordance with manufacturer's installation instructions and [ACI
308.1] [ACI 301] [ACI 318]..
FIELD QUALITY CONTROL
A.
Field [inspection and] testing will be performed by Owner’s testing laboratory in accordance
with [ACI 318] [[applicable] [____] code].
END OF SECTION
6 of 6
V.02-14