THE BOND BEHAVIOR BETWEEN C-FRCM COMPOSITE AND CONCRETE UNDER THE IMPRESSED CURRENT CATHODIC PROTECTION
This study investigates the feasibility of combining the impressed current cathodic protection(ICCP)as well as structural strengthening(SS)techniques for retrofitting reinforced concrete(RC)structures subjected to chloride-induced corrosion.In this ICCP-SS system,a dual-functional material,the carbon-fiber reinforced cementitious matrix(C-FRCM)composite,is used as both the anode and the strengthening material.The C-FRCM composite is consisted of a carbon fiber net(CF-NET)and a polymer-modified cementitious matrix.In order to evaluate the shear stress transfer behaviour after ICCP,a series of specimens contained chloride ions were prepared for the single shear tests.Afterwards,impressed current cathodic protection(ICCP)was applied to the corroded specimens using different current densities for 60 days.Single shear tests were conducted after ICCP.The bond strengths and failure modes of the specimens subjected to cathodic protection were obtained.By comparing results,the effects of ICCP,especially some key parameters such as the current density and the electric quantity,on the shear stress transfer behavior was assessed.It is found that for the RC structures subjected to chloride-induced corrosion,the C-FRCM composite is not only an appropriate anode for ICCP,but also an effective strengthening material for shear stress transfer.Therefore,the innovative ICCP-SS retrofitting technique is seen to be promising and will lead to an improvement with respect to structural durability.
C-FRCM reinforced concrete single shear test impressed current cathodic protection structural strengthening corrosion
Ji-hua ZHU Wei-hao LIN Pi-yu CHEN Tamon UEDA Feng XING Liang-liang WEI Miaochang ZHU Mei-ni SU
Faculty of Civil Engineering,Shenzhen University,Shenzhen,China Laboratory of Engineering for Maintenance System,Faculty of Engineering,Hokkaido University,Sapporo,
国际会议
新加坡
英文
1-4
2017-07-19（万方平台首次上网日期，不代表论文的发表时间）