POST-MIXING ADMIXTURE FOR CONCRETE

摘要

Provided is a post-mixing admixture for concrete, which, when added to a prepared but not solidified concrete, can maintain the fluidity of the concrete for a long period of time in the state immediately prior to the post-mixing addition. The post-mixing admixture for concrete comprises one or more copolymers having two specific types of constituent unit as essential constituent units in the molecule and is such that the proportion of the copolymers in the overall post-mixing admixture is 0.1-4.0 mass % in terms of acetic acid.