ANTI-FREEZING CEMENT COMPOSITION AND CEMENT ADMIXTURE FOR ANTI-FREEZING

摘要

PROBLEM TO BE SOLVED: To provide an anti-freezing cement composition capable of continuing normal crystallization reaction without the freezing of cement concrete even under an outside temperature below the freezing point.;SOLUTION: When cement milk for grout or cement mortar in which water/cement ratio is about 26% or concrete in which water/cement ratio is 20% is prepared by adding 0.25 pts.wt. polycarboxylic acid into 100 pts.wt. portland cement and kneading and is hardened under an atmosphere of a temperature below the freezing point, the blended water is not freezed and the flowability of the cement milk is kept and the slump of the concrete does not occur without problems. The compressive strength is the same as one into which an anti-freezing admixture is not added.;COPYRIGHT: (C)2007,JPO&INPIT