用双电层理论研究不同电价阳离子对α半水石膏水化的影响

The Effect of Different Cation on the Hydration and Indurations Process of a-Hemihydrates Aypsum Based on Double-Layer Theory

通过水化升温曲线、ζ电位、液相组成等的测定,研究了不同电价阳离子对α半水石膏水化硬化过程的影响。结果表明:在α半水石膏的水化硬化过程中,形成了双电层结构和负ζ电位,不同电价的阳离子对α半水石膏的表面双电层结构和ζ电位产生不同影响.导致α半水石膏颗粒的分散度和溶解速度不同,从而影响了α半水石膏的水化硬化。这种作用机理有别于传统的胶体体系。

The effect on difference valence sulfate cation on the hydration and induration process of a - hemihydrates gypsum was studied by means of analysis of the curve of heat evolution rate,liquid phase composition and ζ potential. The experimental results indicate that double electric layer and negative’ potential were formed in the course of gypsum hydration and induration different cation charge has different effect on the double elector layer and potential which result in vartoas dipersion and solubility of dihydrate gypsum particles. All these have notable influence on the hydration and induration of gypsum. The mechanism is different from traditional colloid system.