CEMENT ADMIXTURES WITH HIGH PERFORMANCE WATER REDUCING EFFECT AND PREPARATION METHOD THEREOF

摘要

PROBLEM TO BE SOLVED: To provide a cement admixture which improves dispersibility of cement particles, increases composition fluidity even at a high water-reducing formulation, prevents a decrease of fluidity over time, and offers good workability by supplying an adequate amount of air flow continuously and a method of manufacturing the same.;SOLUTION: The cement admixtures comprise at least one of carbonic acid-based copolymers containing a reactive surfactant as a monomer and the copolymer salts obtained by neutralizing the copolymer. The preparation method is provided. The cement composition uses the cement admixture. The cement admixture improves the dispersibility of cement particles, increases the fluidity of cement composition even at a high range water-reducing formulation, prevents a decrease of fluidity over time and offers good workability by supplying an adequate amount of air flow continuously and accordingly concrete having high strength is formed.;COPYRIGHT: (C)2009,JPO&INPIT