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混凝土结构中钢筋的腐蚀是个世界性问题。在北美和北欧由于冬天用盐去除路面积雪,使高速公路、桥梁、隧道、停车场等混凝土结构中钢筋发生严重腐蚀。同样,海边码头、海洋构筑物及氯碱工业建筑物也有Cl~-对钢筋混凝土的腐蚀问题。全世界的钢筋混凝土结构由于腐蚀造成的损失,迄今尚无准确的数据。据瑞士联邦公路局统计,瑞士公路系统约有3000座桥梁,每年用于桥面
Corrosion of steel in concrete structures is a worldwide problem. In North America and northern Europe, salt is used to remove road surface snow in winter, causing severe corrosion of steel bars in concrete structures such as highways, bridges, tunnels, parking lots and the like. Similarly, the seaside docks, marine structures and chlor-alkali industrial buildings also have Cl ~ - on the corrosion of reinforced concrete. There is no accurate data so far on the losses caused by corrosion caused by reinforced concrete structures all over the world. According to the Swiss Federal Highway Administration statistics, the Swiss road system has about 3000 bridges, each year for the bridge deck