摘要
地铁、轻轨等有杂散电流存在的工程中,杂散电流对钢筋混凝土结构的腐蚀是造成桥梁、隧道等构筑物耐久性下降的主要原因之一。阐述了地铁和轻轨工程中杂散电流的形成,重点分析了杂散电流对混凝土结构中钢筋的腐蚀机理及其危害,探讨了对杂散电流腐蚀的监测方法和防护措施,为今后可能出现杂散电流的混凝土结构工程耐久性设计提供理论依据。
In the constructions with stray current including subway and light rail, the corrosion of reinforced concrete structures by stray current is one of the main reasons of the decrease of durability of structures like bridges and tunnels.The formation of stray current in subway and light rail projects is explained with analysis on the mechanism and destructive effects of corrosion of steel bar by stray cunent in concrete structures and with discussion on monitoring methods and protective measures against corrosion due to stray current,providing the theoretical reference to future durability design of concrete structures which may carry stray current.
出处
《混凝土》
CAS
CSCD
北大核心
2009年第6期21-24,45,共5页
Concrete
基金
浙江省科技厅重点科技计划(2006C24008)
科技部国家国际合作重点项目(2005DFA70810)
关键词
钢筋混凝土结构
杂散电流
腐蚀
监测
防护
reinforced concrete structure
stray current
corrosion
monitoring
protection
