Section 711 — Concrete Curing Material and Additives

711.01Curing Material. Conform to the following:

(a)Burlap cloth AASHTO M 182

(b)Sheet material ASTM C171

(c)Liquid membrane forming compounds ASTM C309, Type I-D or Type 2

711.02Air -Entraining Admixtures. Conform to AASHTO M 154.

711.03Chemical Admixtures. Provide water -reducing, retarding, set -accelerating, and hydration stabilizing admixtures, or combinations thereof, conforming to AASHTO M 194. For hydration stabilizing admixtures, conform to AASHTO M 194, Type B or Type D.

711.04Latex Emulsion. Provide a homogeneous, nontoxic, film forming polymeric emulsion in water with stabilizers added at the point of manufacture. Conform to the following:

(a)Color White

(b)Styrene butadiene polymer type stabilizer 68±4 percent styrene 32±4 percent butadiene

(c)Chlorides 0 percent

(d)Polymer particle size 1500 to 2500 Angstroms average

(e)Latex nonionic surfactant

(f)Solids 46.5 to 49.0 percent

(g)Mass 8.40 to 8.55 lb/gal @ 77 °F

(h)pH 9.0 to 13.0

(i)Shelf life 2 years minimum

(j)Portland cement composition Polydimethylsiloxene

711.05Concrete Coloring Agents. Conform to ASTM C979. Use only coloring agents composed of synthetic or natural inorganic iron oxides. 711.06 Reinforcing Fibers.

(a)Fibers for shotcrete. Use deformed steel or fibrillated polyolefin fibers conforming to ASTM A820 or ASTM D7508. 816 (b) Fibers for concrete. Use fully oriented, collated, fibrillated, white, ¾ -inch long fibers of 100 percent virgin polyolefin conforming to ASTM D7508. Dose at 1.5 to 3 pounds per cubic yard of concrete.

(c)Fibers for UHPC.

(1)Closure pour. Use deformed steel fibers conforming to ASTM A820, minimum tensile strength 290,000 pounds per square inch conforming to ASTM A370.

(2)UHPC overlay. Conform to ASTM A820, Type I cold drawn wire.