abstract |
An object of the present invention is to provide a concrete admixture capable of suppressing darkening occurring on the concrete surface. An olefin-maleic acid copolymer (1) having a weight average molecular weight of 1,000 to 20,000 and having a structural unit consisting of a divalent hydrocarbon group having 6 to 14 carbon atoms, and a polycarboxylic acid other than (1) A concrete admixture containing an acid polymer (2). [Selection diagram] None |