METHOD FOR IMPROVING PUMPABILITY OF CONCRETE AND METHOD FOR IMPROVING PLACEABILITY OF CONCRETE

摘要

PROBLEM TO BE SOLVED: To improve the pumpability of concrete and material separation resistance of high flowing concrete by reducing bleeding upon concrete pressurization. SOLUTION: To reduce bleeding upon the pressurization, a thickener comprising a sulfo-containing aromatic compound or a salt thereof (compoundα) and an alkyltrimethylammonium salt (compoundβ) is added to concrete which needs to be pumped or high flowing concrete. COPYRIGHT: (C)2005,JPO&NCIPI