现在,在钢筋混凝土结构物和构筑物的修理和防水中,常常采用喷射混凝土的方法,这种方法可以使混凝土浇筑工程最大限度地实现机械化,提高建筑施工的效率和质量。对喷射混凝土的强度、水密性、耐腐蚀性和耐高温性能等方面常常提出较高的要求,为此,必须选用特种水泥和优质集料。可以把水玻璃矿渣胶凝材料当作这种特种水泥来使用,其主要性能指标(活性高,快凝、在硬化初期强度增长很快) 能满足对无模浇筑混凝土所使用的水泥的要求。 Nowadays, in the repair and waterproofing of reinforced concrete structures and structures, the method of spraying concrete is often used. This method can maximize the mechanization of the concrete pouring project and improve the efficiency and quality of construction. There are often high requirements for the strength, watertightness, corrosion resistance, and high temperature resistance of sprayed concrete. For this reason, special cements and high-quality aggregates must be used. The water glass slag cementitious material can be used as this special cement, and its main performance index (high activity, rapid solidification, and rapid strength increase at the initial stage of hardening) can meet the requirements for the cement used for moldless concrete.