The polycarboxylate based superplasticizer was synthesized by macromer MPEGMA(methoxy polyethylene glycol methacrylate),MAA(methyl acrylic acid) and SMAS(sodium methyl acryl sulfonate) in aqueous solution polymerization.The effects of reactant concentration;feeding mode;mole ratio of MAA to MPEGMA and SMAS to MPEGMA;dosage of initiator;polymerization temperature and reaction time on the performance of polycarboxylate based superplasticizer were investigated.The results show that the polycarboxylate based su...