Improving Waterproof Property of Gypsum Block with Organic-Inorganic Compound Materials

Abstract

Gypsum block, an important construction material, has the shortcoming of poor water resistance, which limits the development and applications. In this paper, this problem was solved by combined use of silicone (methyl silicon alkoxide) and inorganic material such as cement, manganese slag powder. Orthogonal experiment was used to optimize the proportioning of gypsum block. The appropriate material proportion was obtained: gypsum 66.7%, cement 8.3%, manganese slag powder 25% and methyl silicon alkoxide 0.083%. In this case, the softening efficient was up to 0.76.