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

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.