以亚硝酸钙为主体原料的混凝土外加剂,近几年来发展很快,苏联以亚硝酸钙一硝酸钙混合物用于抗冻剂的主体原料,取得了良好的效果;同时,以亚硝酸钙为主体原料配制成钢筋阻锈剂,在冶金、化工等工业建筑中得到了应用。美国、日本及西欧各国,主要用亚硝酸钙配制无氯盐早强剂、促凝剂和大量用于钢筋的阻锈剂。特别在沿海和海洋工程、桥梁工程等建筑中广泛应用,并取得良好的效果。 Concrete admixtures containing calcium nitrite as the main raw material have developed rapidly in recent years. The Soviet Union used a mixture of calcium nitrite and calcium nitrate as the main raw material for antifreeze and achieved good results. At the same time, calcium nitrite was used as The main raw materials are formulated into reinforced rust inhibitors and have been used in metallurgy, chemical and other industrial buildings. In the United States, Japan, and countries in Western Europe, calcium nitrite is mainly used to formulate chlorine-free salt early strength agents, accelerators, and a large amount of rust inhibitors used for reinforcing steel. It has been widely used in coastal and marine engineering and bridge engineering and has achieved good results.