膨胀珍珠岩空心石膏板是一种新型的轻质内隔墙材料。它的工艺简单,板面平整光滑,质轻,防火,有良好的加工性能,且安装方便,施工效率高,有利于改革墙体材料的生产和应用。但作为主要生产原料的石膏,在我省资源十分缺乏,须从遥远的青海、甘肃等地运来,因此不可避免地使板材成本大大提高,不利于板材的推广使用。在杭州保温材料厂的大力配合下,我所开展了石膏板的掺合料试验,目的在于寻找一些价廉、来源丰富的材料,来代表板材中一部分石膏,在板材基 Expanded perlite hollow gypsum board is a new type of lightweight internal partition material. Its process is simple, the surface is smooth, light, fireproof, has good processing performance, and easy installation, high construction efficiency, is conducive to the reform of the production and application of wall materials. However, gypsum, which is the main raw material for production, is very scarce in our province and must be transported from distant places such as Qinghai and Gansu, which inevitably increases the cost of the slabs, which is not conducive to the promotion and use of the slabs. With the cooperation of Hangzhou Thermal Insulation Materials Factory, we conducted experiments on the admixture of gypsum board. The purpose was to find inexpensive and abundant materials to represent a part of the gypsum in the board.