| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide: a cement admixture that can attain excellent cement dispersibility and water-reducing capability even under various temperature environments, is excellent in slump loss prevention performance and does not lead to material separation, and yet, when made to be a cement composition, can suppress the increase in viscosity of the cement composition; and a cement composition using the same.SOLUTION: The problem is solved by the use of: a copolymer or salt thereof (A) comprising a constitutional unit having an alkenyl group comprising a particular number of carbon atoms, and an unsaturated mono-carboxylic acid ester-based constitutional unit comprising a particular number of carbon atoms; polyalkylene glycol (B); and a copolymer (C) of acrylic acid and methacrylic acid, as active ingredients of the cement admixture.</p> |
