EFFECTS OF ATTRIBUTING FACTORS ON SURFACE CRACKING IN CORROSION AFFECTED RC STRUCTURES

摘要：

Surface cracking is one of most common distressing consequences of reinforcingbar corrosion. The localized failure is of concern to the users of the facility and might lead tocatastrophic structural failures if left unattended. Therefore,it is of practical significance toidentify those factors that affect surface cracking in concrete most. This paper presents atransfer matrix method for evaluating the effects of attributing factors on the time to surfacecracking. By modeling concrete as a quasi-brittle material,the transfer matrix method is usedto determine the time to surface cracking. Based on the numerical results,the effects of thetensile strength of concrete,bar diameter,cover depth and corrosion current density on thetime to surface cracking are evaluated in a quantitative manner. It is found that the time tosurface cracking increases with the increase of the tensile strength of concrete,bar diameterand cover depth,but decreases with an increase in corrosion current density.

关键词： RC structure surface cracking transfer matrix method sensitivity analysis

作者: Xinzhu Zhou Jianjun Zheng Hao Zhang

作者单位: School of Civil Engineering and Architecture,Zhejiang University of Technology,Hangzhou 310014,PR China

会议类型: 国际会议

会议名称: The International Conference on Durability of Concrete Structures(2008年混凝土结构耐久性国际学术会议)

会议地点: 杭州

会议语种:英文

页码: 917-920

在线出版日期: 2008-11-01（万方平台首次上网日期，不代表论文的发表时间）