由于凝结硬化后的石膏灰泥及其制品在外露条件下的不良性能,因而其应用一般仅限制于户内。为了使石膏胶结料及其制品能够更广泛地应用于建筑,国外正致力于研究高强耐水石膏灰泥,并已取得一定成果。例如,把石膏和十二碳烯丁二酸钾及Al_2(SO_4)_3溶液混合,然后再加热至40℃,可以增大石膏制品的耐水 Due to poor performance of coagulation-hardened gypsum plaster and its products under exposed conditions, its application is generally limited to indoor use. In order to make gypsum binders and their products more widely applicable to buildings, foreign countries are striving to study high-strength gypsum-resistant plasters and have achieved certain results. For example, mixing gypsum with potassium dodecylsuccinate and Al_2(SO_4)_3 solution and then heating to 40°C can increase the water resistance of gypsum products.