CORROSION-INDUCED BOND DETERIORATION IN REINFORCED CONCRETE STRUCTURES
Corrosion of reinforcing steel in concrete is a global problem for reinforced concrete (RC) structures located in a chloride and/or carbon dioxide-laden environment.The corrosion can alter the interface between the steel and concrete and thus affects the bonding mechanism.This subsequently influences the behaviour of reinforced concrete structures in terms of their safety and serviceability.The present paper attempts to develop a numerical model for deterioration of the bond between reinforcing steel and concrete subjected to reinforcement corrosion.The method accounts for the effects of corrosion on the stiffness, maximum strength, residual strength and failure mode of the bond between the steel and concrete.In the numerical method, the corrosion-affected stiffness and maximum strength of bond are explicitly expressed as a function of corrosion rate.An example of RC sea wall is carried out to demonstrate the application of the derived model.It is found in this paper that the increase in the bond strength due to minor corrosion can increase the load-bearing capacity of the wall and the corrosion-affected reinforced concrete walls exhibit less ductile behaviour compared with the uncorroded ones.
Shangtong Yang Chun-Qing Li
Department of Civil and Environmental Engineering,University of Strathclyde,Glasgow, School of Civil,Environmental and Chemical Engineering,RMIT University,Melbourne,Australia
国际会议
The Fourth RILEM International Symposium on Concrete Modelling (CONMOD 2014)(第四届RILEM混凝土材料建模国际会议)
北京
英文
471-478
2014-10-12（万方平台首次上网日期，不代表论文的发表时间）