石膏材料具有凝结硬化快、自重轻、易加工、防火及装饰效果好等优点,但吸水受潮后强度大幅度下降。因此受潮后的石膏板在存放及运输过程中损耗率很大,且不宜用于厨房、厕所等湿度较大的建筑部位。天津大学土木系建筑材料教研室通过研究,在石膏中掺入16～27%的矿渣和4～7%的水泥, Gypsum material has the advantages of fast setting and hardening, light weight, easy processing, fire protection and good decorative effect, but the strength is greatly reduced after absorbing water and moisture. Therefore, the damped gypsum board has a large loss rate during storage and transportation, and it is not suitable for use in kitchens, toilets, and other high-humidity construction sites. The Department of Civil Engineering and Building Materials of Tianjin University studied and mixed 16 to 27% of slag and 4 to 7% of cement in gypsum.