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淀粉基混凝土减水剂作用机理研究
作者：吴家瑶，孙长江，何红荣，郭欢欢
（江苏省交通科学研究院有限公司，江苏 南京 210000）
摘要：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。
关键词：淀粉减水剂；机理；空间位阻；静电斥力
中图分类号：TU528.042.2 文献标识码：A 文章编号：1001-702X（2017）08-0037-04
Study on the dispersion mechanism of starch based water reducing agent
WU Jiayao，SUN Changjiang，HE Hongrong，GUO Huanhuan
（Jiangsu Traffic Science Research Institute Co. Ltd.，Nanjing 210000，China）
WU Jiayao，SUN Changjiang，HE Hongrong，GUO Huanhuan
（Jiangsu Traffic Science Research Institute Co. Ltd.，Nanjing 210000，China）
Abstract：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.
Key words：starch water reducing agent，mechanism，steric hindrance，electrostatic repulsion
Key words：starch water reducing agent，mechanism，steric hindrance，electrostatic repulsion