The article presents the possibility of increasing the water resistance of gypsum binders (GBs) obtained based on synthetic gypsum by introducing additives derived from industrial wastes. Regularities were obtained for the influence of the type and amount of additives on the water/gypsum ratio (W/G), strength indicators and water resistance of high-strength GB. The introduction of a single-component additive to improve water resistance does not have a significant effect. Complex additives based on Portland cement, granulated blast-furnace slag, electric steel-smelting slag, expanded clay dust and granite screenings of various fractions have been developed that make the maximum contribution to improving the water resistance of a high-strength GB based on synthetic calcium sulphate dihydrate, which made it possible to increase the water-resistance coefficient from 0.39 to 0.82.

中文翻译：

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来自工业废料的具有改进耐水系数的高强度石膏粘合剂

该文章提出了通过引入来自工业废物的添加剂来提高基于合成石膏获得的石膏粘合剂（GB）的耐水性的可能性。得出了添加剂种类和用量对高强GB水石膏比(W/G)、强度指标和耐水性的影响规律。引入单组分添加剂来提高耐水性并没有明显的效果。基于硅酸盐水泥、粒状高炉矿渣、电炉钢渣、膨胀粘土粉和不同组分的花岗岩筛分的复合添加剂已被开发出来，为提高基于合成材料的高强度GB的耐水性做出了最大贡献二水硫酸钙，可以将防水系数从 0.39 提高到 0.82。