Superfine Desulfurization Gypsum can Improve the Strength of Cement Mortar

Abstract

Tens of millions of tons of desulfurized gypsum can be produced in China every year. Desulfurization gypsum is used as an admixture to replace part of cement in concrete. And the smaller the particle size of desulfurized gypsum, the better the mechanical properties of cement mortar. The compressive and flexural tests show that the cement mortar with 3% and 4% desulfurized gypsum has the best mechanical properties, and the mechanical properties of superfine desulfurized gypsum are better than those of direct desulfurized gypsum.