polycarboxylate, polycarboxylic acid, copolymer, superplasticizers, water reducer, dispersant, concrete admixture, PC Keywords: polycarboxylate, polycarboxylic acid, copolymer, superplasticizers, water reducer, dispersant, concrete admixture, PCPolycarboxylate Superplasticizer (Polycarboxylate High-range Water Reducer) ----Third generation of concrete admixtures, fine comprehensive performance ...