人工气候环境下水工混凝土钢筋初始锈蚀时间预测  

Prediction of initial corrosion time of steel bars in hydraulic concrete under artificial climate environment

作　　者：王梁英[1] 刘华挺[1] 张俊芝[1] 周建民[1] 郑辉[1] 

机构地区：[1]浙江工业大学建筑工程学院,浙江杭州310014

出　　处：《水利水电科技进展》2010年第5期9-11,56,共4页Advances in Science and Technology of Water Resources

基　　金：国家自然科学基金(50879079)

摘　　要：根据人工气候环境下的混凝土侵蚀试验测得的混凝土中氯离子质量分数,分别研究了腐蚀24 d,40 d,80 d,120 d和160 d后混凝土的氯离子扩散参数,基于Fick第二定律和Monte-Carlo法模拟了混凝土中钢筋的初始锈蚀时间。结果表明,在人工气候环境下混凝土保护层有效厚度对水工混凝土钢筋初始锈蚀时间的影响较大。According to the concentrations of chloride ions in corrosion tests on concrete under artificial climate environment,the diffusion parameters of concrete after corrosion of 24,40,80,120 and 160 d were studied.The initial corrosion time of steel bars in concrete was simulated based on the Fick＇s second law by use of the Monte-Carlo method.The results show that the effective thickness of concrete protective layer has great influence on the initial corrosion time of steel bars in hydraulic concrete under the design artificial climate environment.

关 键 词：混凝土 人工气候环境 氯离子 钢筋 初始锈蚀时间 

分 类 号：TV431[水利工程—水工结构工程]