| abstract |
(57) [Abstract] [Problem] High water retention performance and high gel elasticity of cement water, When mixed with the cement composition and extruded, a cement admixture that has good water retention, lubricity, good shape retention, introduces closed cells into the cement molded product, and is also effective in reducing the weight of the molded product. provide. SOLUTION: A cement admixture comprising (meth) acrylamide and / or a water-soluble monoacrylate having a hydroxyl group and (meth) acrylic acid (alkali metal salt) as essential constituent units and comprising a crosslinked water-absorbing resin. . |