PREPARATION METHOD FOR LOW SHRINKAGE AE CONCRETE AND LOW SHRINKAGE AE CONCRETE

摘要

PROBLEM TO BE SOLVED: To provide a preparation method for low shrinkage AE concrete which has such multi-functions simultaneously that the entrained air of concrete after kneading is not defoamed, the air content is held stably with time and the dry shrinkage rate of the obtained hardening body is small, the occurrence of cracks is controlled, further the freezing and thawing resistance of the hardening body is excellent, and still further the void occurrence on the surface of concrete of the obtained hardened body after curing and the surface appearance is beautiful, and to provide the low shrinkage AE concrete obtained by the preparation method.;SOLUTION: The preparation method for the low shrinkage AE concrete comprises a step of adding 0.1-8.0 pts.mass of a low shrinkage reduction fluidizing agent per 100 pts.mass of cement in the base concrete to stiff-consistency base concrete that has been kneaded and mixed in advance.;COPYRIGHT: (C)2013,JPO&INPIT