Additive Including Polycarboxylic-based Copolymer and Cement Composition Comprising the Same

摘要

The present invention relates to an additive for a cement composition comprising a polycarboxylic acid copolymer and a cement composition containing the same, and more particularly to a cement composition containing a polycarboxylic acid copolymer and / or a salt thereof, (Meth) acrylic acid ester monomer, a (meth) acrylic acid monomer and an alkylene oxide group having 5 to 20 carbon atoms and having at least two acrylate groups or vinyl groups And a water-soluble polycarboxylic acid-based copolymer are blended, and to a cement composition containing the same, wherein the polycarboxylic acid-based copolymer according to the present invention The additives of the cement composition can control the cross-linking structure, Improvement to be able to form the cement composition having excellent long time workability.