Synthesis and performance evaluation of a polycarboxylate superplasticizer with slump retention
CHENG Xuan
SONG Jianmin
XIONG Xufeng
WU Hongte
YU Qi
YU Bingchuan
Abstract：A slump retaining polycarboxylate superplasticizer was prepared by isopentenyl polyoxyethylene ether(TPEG),maleic anhydride(MA),acrylamide and monomethyl maleate(AMA),acrylamide(AM),acrylic(AA). The effects of such factors as the monomer ratio,reaction temperature,dosage of the initiator and chain transfer agent on the slump retaining polycarboxylate superplasticizer performance were discussed in this paper. The best synthesis process of slump retaining polycarboxylate superplasticizer is:the monomer ratio was n(TPEG):n(AMA):n(MA):n(AM):n(AA)=1:1:2:1:1,the reaction temperature is 45℃,the amount of initiator and chain transfer agent are 6% and 1.75%of the monomer molar amount respectively. The slump retaining polycarboxylate superplasticizer which was prepared had good slump retention and adaptability for different cement.
Keywords：slump retaining agentpolycarboxylate superplasticizersynthesisperformance evaluation
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 66-69,73 )