Demonstrating Low Carbon Concrete for Tilt-Up Wall Panel Construction скачать в хорошем качестве

Demonstrating Low Carbon Concrete for Tilt-Up Wall Panel Construction

Tom Van Dam, Wiss, Janney, Elstner Associates, Inc. The results of a low-carbon concrete tilt-up wall panel demonstration project will be presented that evaluated three concrete mixtures: a base level Type IL (Mix#1), the Type IL with 25% replacement with slag cement (Mix #2), and an ASTM C1157 cement with less than 5% portland cement (Mix#3). Extensive laboratory testing determined the bleed rate, initial and final set, compressive strength, splitting tensile strength, modulus of elasticity, and drying shrinkage of the three mixtures as well as establishing maturity relationships. Considerable information was obtained through testing and in situ monitoring providing lessons on how to use concrete with significantly lower carbon even under difficult temperature conditions.