Reliability-based assessment of the effect of climatic conditions and CO2 emissions on the corrosion of RC structures subjected to carbonation

摘要：

　　carbonation rate of concrete structures are influenced by CO2 emissions and climate conditions.Carbonation depth prediction model was proposed and CO2 emission scenarios influence on concrete structures carbonation damage was studied.As there are significant uncertainty and variability of CO2 emissions,deterioration mechanisms,material properties,dimensions and environments,the time-dependent structural reliability analysis was employed to predict the probability of corrosion initiation from 2000 to 2100,considering several IPCC future atmospheric CO2 emission scenarios.Results show:(1)carbonation depth in AlFl and AlB scenarios is 36% higher than that invariant CO2 concentration,and AlB scenarios is 21%; (2)The corrosion initiation probability of RC structures in AlFl and AlB scenarios are 84% and 67% higher than that invariant CO2 concentration,respectively.

关键词： concrete carbonation climatic conditions CO2 emissions corrosion

作者: LIU Jun-li FANG Zhi

作者单位: School of Civil Engineering,Hunan University,Changsha Hunan 410082,China;GuangXi Key Laboratory of C School of Civil Engineering,Hunan University,Changsha Hunan 410082,China

会议类型: 国际会议

会议名称: the 2012 2nd International Conference on Frontiers of Manufacturing Science and Measuring Technology (第二届制造科学与检测技术国际会议(ICFMM 2012))

会议地点: 西安

会议语种:英文

页码: 780-784

在线出版日期: 2012-06-12（万方平台首次上网日期，不代表论文的发表时间）