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Synthesis and Properties of Sustained Release Polycarboxylate Superplasticizer

Cao Dengyun;Li Shuangxi;Zhu Yongbin;Xinjiang Agricultural University, College of Water Conservancy and Engineering;  
The paper reviews the polycarboxylate superplasticizer is synthesized by using TPEG、AA、MAS、APS as chain transfer agent, in orthogonal test.Compare by the fluidity of cement initial, the optimal working parameters of process can be obtained, It is n(TPEG)∶n(AA)∶n(MAS)∶n(APS)=1∶2.0∶0.06∶0.20,the reaction temperature is at 60 ℃, the reaction time is 4 h. The detection of performance concrete and IR analysis are selected to do. The study shows that the polycarboxylate superplasticizer has good sustained release performance.
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