Abstract:The performance and application trends of polycarboxylate based plasticizer(PC) is discussed.The combined use of PC with the other type of plasticizers,i.e.Lignosulphate based plasticizer(LS),naphthalene sulphate based superplasticizer(NSF),melamine sulphate based superplasticizer(MSF),aminophenol sulphate based superplasticizer(ASF) and sulfonated acetone-formaldehyde based superplasticizer(SAF),was experimentally investigated.The results indicate that,based on the solubility of PC and other type of plasticizers,PC can be compounded with LS,NSF or ASF,but it can not be used in combination with MSF or SAF;regarding the efficiency of combined use of different type of plasticizers,PC can be added together with LS or SAF;It does harms to the plasticizing ability and slump retention ability of concrete if PC is added together with NSF,MSF or ASF.