淀粉基混凝土减水剂作用机理研究

摘要

Starch water reducing agent(SS) is a kind of new,green and environmental protection concrete water reducing agent. Dispersion mechanism of starch based water reducing agent was studied by Zeta potential,adsorption capacity,surface tension and other methods,through which we found that the mechanism of water reducing effect of starch based water reducing agent was based on the steric hindrance mechanism,and presented a synergism of electrostatic repulsion mechanism and hydration film mechanism.%淀粉基减水剂(SS)是一种新型、绿色、环保的混凝土减水剂.通过Zeta电位、吸附量、表面张力等测试对淀粉基减水剂的分散机理进行了研究表明,淀粉基减水剂减水的作用机理为以空间位阻为主导,以静电斥力机理、水化膜机理协同作用.