| abstract |
The invention relates to the technical field of building admixtures, in particular to a polycarboxylate water-reducing agent for concrete components used in prefabricated concrete components and a preparation method thereof, wherein the polycarboxylate water-reducing agent for concrete components is composed of unsaturated esters Monomer, polyether monomer, unsaturated carboxylic acid/acid anhydride, unsaturated fluorophenyl acid, and unsaturated phenyl phosphate are obtained by copolymerization. In the present invention, polycarboxylic acid ester structure, amino group, cycloalkyl group, phosphate ester group, fluorophenyl group, phenyl group, carboxylate group and allyl ether structure are introduced into the molecular structure of the polymer, so that the prepared polycarboxylic acid can reduce water. It has high water-reducing rate and slump-preserving properties, improves the strength of concrete, has a large steric hindrance between molecules, effectively reduces the viscosity of concrete, and also has the effect of reducing the heat of hydration of concrete, which can improve the durability of concrete. Especially suitable for precast concrete projects. |