不同电价阳离子对α-半水石膏水化性能的影响  

Influence of different electrovalence cation on hydration of α semi-hydrated gypsum

作　　者：刘伟华[1] 杨克锐[2] 

机构地区：[1]东莞市建设科技促进中心,广东东莞523112 [2]河北理工大学材料学院,河北唐山063009

出　　处：《新型建筑材料》2007年第10期29-31,共3页New Building Materials

摘　　要：采用水化温升曲线、ξ电位和液相组成等测试手段,研究了不同电价阳离子对α半水石膏水化性能的影响。结果显示,α半水石膏水化过程中,形成了双电层结构,ξ电位为负值,不同电价阳离子对其表面双电层结构和ξ电位影响不同,会引起颗粒的分散度和溶解速度的差异,进而影响α半水石膏的水化性能。这种机理有别于传统的胶体体系。Influence of different electrovalence cation on hydration of α semi-hydrated gypsum is studied by means of hydration temperature rise curve ξ potential and liquidoid constitution.The result shows that in the process of α semi-hydrated gypsum hydration,electric double layer structure is formed,ξ potential is negative value and different electrovalence cation has different influence on its surface electric double layer structure and ξ potential that leads to difference in grain dispersiveness and dissolving speed,then affect the hydration of α semi-hydrated gypsum.This kind of mechanism is different from conventional colloidal system.

关 键 词：Α半水石膏 阳离子 水化速度 双电层结构 

分 类 号：TQ177.37[化学工程—硅酸盐工业]