聚羧酸减水剂与水泥的相容性是混凝土生产中备受关注的问题.采用净浆流动度法测试水泥净浆初始流动度、饱和掺量点、流动度经时损失三个参数,以此考察某聚羧酸减水剂与乐山地区三种常用水泥(A、B、C)的相容性.分别采用激光粒度仪、Zeta电位仪和X射线衍射仪测试水泥的粒径、Zeta电位和物相组成,探索导致三种水泥与聚羧酸减水剂相容性出现差异的可能因素.研究结果表明三种水泥与聚羧酸减水剂相容性优劣顺序为:A>B>C,这与根据Zeta电位和粒径推测出的相容性顺序不一致,但与根据相成分测试结果推测出的相容性优劣顺序是一致的.由此可以推测Zeta电位与粒径均不是影响三种水泥与聚羧酸减水剂相容性的主要因素,而水泥各相成分的含量可能是影响相容性的一个主要因素.
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