Probability Model of Corrosion-Induced Cracking Time in Chloride-Contaminated Reinforced Concrete
Corrosion-induced concrete cover cracking caused by chloride ion is an important indication of durability limit state for marine reinforced concrete (RC) structures and can ultimately determine the structural service life. In this paper, considering the random nature of factors affecting the corrosion cracking process, a probabilistic model which expands on the deterministic model of cover cracking time is developed by using Monte Carlo simulation technique. The results showed that the time to corrosion cracking can be modelled by the Weibull distribution. Finally, the probabilistic analysis for the cracking time is applied to an in-site RC bridge girder with four different durability design specifications. It is found that the mean and 90% confidence interval of the cover cracking time will increase with the improvement of durability design level, which means that the difficulty in precise prediction with deterministic model will augment accordingly.
reinforce concrete corrosion cover cracking probability model Monte Carlo simulation
Chunhua Lu Jinmu Yang Ronggui Liu
Faculty of Civil Engineering and Mechanics, Jiangsu University, Zhenjiang 212013, P.R.China
国际会议
The 5th International Conference on the Durability of Concrete Structures(第五届混凝土结构耐久性国际学术会议)
深圳
英文
309-314
2016-07-01（万方平台首次上网日期，不代表论文的发表时间）