to control shrinkage cracking. Include technical
representative when warranted by size and importance
of job.
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Provide fiber-reinforced concrete in accordance with ASTM C 1116, Type III,
synthetic fiber-reinforced concrete, and as follows. Synthetic reinforcing
fibers shall be 100 percent virgin polypropylene fibrillated fibers.
Fibers shall have a specific gravity of 0.9, a minimum tensile strength of
480 MPa 70 ksi, graded per manufacturer, and specifically manufactured to
an optimum gradation for use as concrete secondary reinforcement. A
minimum of 2.6 kg of fibers per cubic meter 1.5 pounds of fibers per cubic
yard of concrete shall be used. Fibers shall be added at the batch plant.
[Toughness indices shall meet requirements for performance Level I.]
[Provide the services of a qualified technical representative to instruct
the concrete supplier in proper batching and mixing of materials to be
provided.]
]2.2.8
Polyvinylchloride Waterstops
COE CRD-C 572.
2.2.9
Materials for Curing Concrete
2.2.9.1
Impervious Sheeting
ASTM C 171; waterproof paper, clear or white polyethylene sheeting, or
polyethylene-coated burlap.
2.2.9.2
Pervious Sheeting
AASHTO M 182.
2.2.9.3
Liquid Membrane-Forming Compound
ASTM C 309, white-pigmented, Type 2, Class B.
2.2.10
Liquid Chemical Sealer-Hardener Compound
Provide magnesium fluosilicate compound which when mixed with water seals
and hardens the surface of the concrete. Do not use on exterior slabs
exposed to freezing conditions. Compound shall not reduce the adhesion of
resilient flooring, tile, paint, roofing, waterproofing, or other material
applied to concrete.
2.2.11
Expansion/Contraction Joint Filler
ASTM D 1751 or ASTM D 1752, 13 mm 1/2 inch thick[, unless otherwise
indicated.]
2.2.12
Joint Sealants
2.2.12.1
Horizontal Surfaces, 3 Percent Slope, Maximum
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NOTE: For horizontal surfaces subject to jet fuel,
specify FS SS-S-1614.
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SECTION 03311
Page 27
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