加载水平对杂散电流和盐溶液共同作用下钢筋锈蚀影响的模拟试验研究  

Simulation experiment of influence loading level to reinforcement corrosion under coupling effect of stray current and salt solution

作　　者：滕海文[1,2] 杨森茂[1] 舒正昌[1] 黄颖[1] 

机构地区：[1]北京工业大学建筑工程学院,北京100124 [2]北京工业大学工程抗震与结构诊治北京市重点实验室,北京100124

出　　处：《混凝土》2010年第7期1-3,7,共4页Concrete

基　　金：国家自然科学基金(50808005);国家科技支撑计划项目(2006BAJ27B04);北京市科技计划课题(Y060506000007022);北京市自然科学基金重大项目(8100001)

摘　　要：参照地铁工程结构服役环境,试验模拟了在杂散电流和氯盐溶液共同作用下,不同加载水平(0,0.2,0.4)对钢筋混凝土构件内钢筋锈蚀的影响。采用线性极化电阻法测量钢筋锈蚀电流密度,进行了定性分析和定量计算。试验结果表明:随着构件加载水平的增加,钢筋锈蚀电流密度也相应增加,建立了锈蚀时间与钢筋锈蚀量的定量关系。According to the service environment of subway structure,experiment is carried out to simulate influence of different loading level to reinforcement corrosion of R.C element under coupling of stray current and chlorine salt solution.The current density of the corrosion is measured with the linear polarization resistance method,the qualitative analysis and quantitative calculation is carried out.Experimental results show,with the increase of loading level,rebar corrosion current density also increases accordingly.The quantitative relations of the rust corrosion of reinforcement and the time are built.

关 键 词：钢筋锈蚀 杂散电流 盐溶液 加载水平 模拟试验 

分 类 号：TU528.01[建筑科学—建筑技术科学]