Study on oxidation-reduction initiator systems-synthesizing polycarboxylate superplasticizer under nearly ordinary temperature
XU Yongdong
YIN Peng
WANG Peng
SUN Le
BAO Shaowen
Abstract：Polycarboxylate Superplasticizer is synthesized under oxidation-reduction system as an initiator,the experiment focus on researching composition of reducing agent,the dosage of oxidant and the time of initiator reserve and so on. The result shows that the reducing agent ratio is m(Vc):m(NaHSO3)=1:1,the dosage of oxidant is 0.5% mass of HPEG. The dosage of initiator (2%),n(HPEG):n(AA):n(AMPS)=1.0:3.5:0.7. The molar mass is MW=25820 g/mol. The XRD results show that polycarboxylate su-perplasticizer can improve early hydration. The water-reducing rate can be 35% with the dosage of 0.25%.
Keywords：oxidation-reduction initiator systemsorthogonal testreservedispersity
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：4( 17-20 )