708FIBER

708.1FIBERS FOR USE IN CONCRETE. Provide a method of adding the fibers to the mix such that the

fibers are dispersed during mixing and no clumps of fibers are present at the end of a mix cycle. Conform to ASTM C1116 and to the following requirements:

• Carbon Steel

• Alloy Steel

• Stainless Steel

requirements:

• Polyolefin Fibers. ASTM D7508

• If fibers other than Polyolefin are used , test the resistance to deterioration when in contact with the moisture and alkalis present in cement paste, and the substances present in admixtures, throughout the anticipated useful life of the structure according to ASTM C1116, Note 2 and 4.2.

• Provide fibers having a minimum length of 1.25 inches, a maximum length of 2.0 inches, and an aspect ratio between 70 and 100, inclusive.

• Provide fibers with a minimum tensile strength of 50 kips per square inch.

• Provide fibers that are 100% virgin polypropylene, fibrillated, rough textured, interconnected fibers containing no reprocessed olefin materials and specifically manufactured as concrete reinforcement.

• Provide fibers that are graded with a maximum length of 2 inches and a minimum tensile strength of 32 kips per square inch.

• Fiber for Plastic Shrinkage Cracking. Monofilament or collated fibrillated synthetic fiber must conform to ASTM C1116, 4.1.3-Type III. Provide test report complying with ICC Evaluation Service’s (ICC-ES) AC32 Acceptance Criteria for Concrete with Synthetic Fibers, Section 3.2.1 from an Independent Certified Laboratory.