钢筋混凝土腐蚀与防护的技术发展动态

总结，分析并阐述了在腐蚀环境条件下，混凝土中钢筋腐蚀发生和发展的原因，腐蚀性组分从环境透过作为多相电解质的混凝土到达钢筋表面，破坏了钢筋的印态，是钢筋腐蚀的主要原因。

THE STATE-OF-ART ON CORROSION AND PREVENTION OF REINFORCED CONCRETE

In the paper, the corrosion causes of rebar in concrete under corrosive environment is analyzed and discussed. It is mainly suffered to the penetration of corrosive species from environment into the surface of re-bar. Corrosion is initiated by penetration of chlorides and breakdown of passivation, and then propagated by crack-ing of concrete induced by stress from volume expansion of corrosion product of rebar in succession. Some effective countermeasures for corrosion prevention and conventional inspection/monitoring techniques for reinforced con-crete are briefly specified and discussed. Finally, some important techniques commonly used or to be developed are also suggested.