| 摘要 |
<P>PROBLEM TO BE SOLVED: To produce concrete with improved flowability without increasing paste (unit water amount or unit cement amount). <P>SOLUTION: A mixture of water, cement, fine aggregates and coarse aggregates is used as cement concrete to be a base so that a slump value of ≥8 cm and ≤12 cm is achieved, and by kneading an admixture in which a thickener and a high performance AE water reducer are mixed, in the cement concrete, the flowability of the cement concrete is improved, and the slump value of >18 cm and ≤23 cm is obtained. As a thickener, the thickener containing glycol based, acrylic based and biopolymer based components are suitably used. As the high performance AE water reducer agent, a water reducer containing a polycarboxylic acid based component is suitably used. <P>COPYRIGHT: (C)2013,JPO&INPIT |
