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近年来,聚合物水泥混凝土发展较快,应用也比较广泛,例如将聚合物水泥(砂浆)直接涂敷在混凝土表面或钢筋上以保护钢筋混凝土结构。利用聚合物水泥的强碱性钝化钢筋,阻止钢筋锈蚀,而聚合物水泥层还可起隔绝作用,使O_2、H_2O、CO_2和Cl~-难以掺入到钢筋表面,并与钢筋粘接好,与混凝土成为一体,是一种较理想的防腐剂。研制的聚合物水泥型防腐剂——872钢筋防腐剂,在室内试验的基础上曾在内蒙古呼和浩特市及北京市加气混凝土厂中进行了工业性试验,并取得了满意的效果。
In recent years, polymer cement concrete has developed rapidly and has been widely used. For example, polymer cement (mortar) is directly applied on the surface of concrete or reinforcement to protect the reinforced concrete structure. The use of polymer cement strong alkaline passivation bar to prevent steel corrosion, and the polymer cement layer can also play a role in insulation, so that O2, H2O, CO2 and Cl ~ - difficult to be incorporated into the surface of the steel bar, and good adhesion with the reinforcement It is an ideal preservative that is integrated with concrete. The polymer cement preservative--872 steel preservative developed was industrially tested in Hohhot, Inner Mongolia, and in Beijing’s aerated concrete plant on the basis of laboratory tests and achieved satisfactory results.