| abstract |
(57) [Summary] [Object] The present invention provides a cement admixture for the purpose of improving dispersibility, suppressing slump loss, and improving strength and durability in a cement composition such as cement paste. . [Structure] A cement admixture characterized by comprising a copolymer obtained by polymerizing the monomers shown in (1) and (2) below and / or a metal salt of the copolymer. (1) Polyalkylene glycol monoester monomer having unsaturated bond (2) Acrylic acid monomer and / or unsaturated dicarboxylic acid monomer [Effect] The cement admixture according to the present invention is As a pump pressure-feeding aid, it significantly enhances the effect of pump pressure-feeding work, is also effective for maintaining fluidity and preventing material separation, and is expected to further improve strength and durability. |