Preparation and Properties of Anti-mud and Viscosity-Reducing polycarboxylate superplasticizer

Abstract

In this paper, the electropositive amide and phosphoric acid functional groups are introduced on the basis of the synthesis of common polycarboxylate superplasticizer, so as to reduce the sensitivity of the polycarboxylate superplasticizer to clay. In this paper, a small amount of 2-Capped1-Phoshate Easter containing olefin functional group was introduced into the polycarboxylate superplasticizer molecule by free radical reaction, which improved the negative electricity of the polycarboxylate superplasticizer and reduced sensitivity to clay. The performance test results show that the product can effectively reduce the sensitivity to clay during the process of mixing concrete with sandstone material with high mudstone content, and improve the fluidity of concrete and effectively reduce the viscosity of concrete.