Experimental Study on Seismic Performance of RC Column After Electrochemical Repair Considering Time Effect
WANG Xianglin1,2, MAO Jianghong3,*, SONG Zhigang1, MA Jiaxing2, ZHANG Jun2
1 Faculty of Civil Engineering and Architecture, Kunming University of Science and Technology, Kunming 650500,China 2 School of Civil Engineering and Architecture, Ningbo Tech University, Ningbo 315100, Zhejiang, China 3 College of Architecture and Environment, Sichuan University, Chengdu 610065,China
Abstract: The electrochemical hydrogen charging of RC components was carried out under the density of 3.0 A/m2 commonly used in electrochemical repair of concrete structures. The effect of hydrogen charging and time effect were considered in the experiments. The low-cycle reciprocating experiment was carried out to obtain the failure mode, crack characteristics, hysteresis curve, skeleton curve and stiffness degradation curve. The results show that crack characteristics after electrochemical repair show obvious difference due to the decreasing of concrete strength, reinforcement properties and bond behavior strength. However, this negative effect recovers by considering the time effect. There is no significant difference on the failure mode, bearing capacity and energy dissipation capacity among each column. Therefore, electrochemical repair with common current density, meanwhile considering the time effect, has no significant effect on the seismic performance of the structure which is located in seismic area.
通讯作者: *毛江鸿,四川大学建筑与环境学院特聘研究员;2010—2011年,于Queen's University of Belfast 做学术访问,2012—2021年,浙江大学宁波理工学院土木工程系讲师/副教授/教授,研究方向为混凝土结构耐久性。已在国内外学术期刊上发表论文120余篇。jhmao@scu.edu.cn
王向林, 毛江鸿, 宋志刚, 马佳星, 张军. 考虑时间效应的电化学修复后RC柱抗震性能试验研究[J]. 材料导报, 2023, 37(16): 21110218-6.
WANG Xianglin, MAO Jianghong, SONG Zhigang, MA Jiaxing, ZHANG Jun. Experimental Study on Seismic Performance of RC Column After Electrochemical Repair Considering Time Effect. Materials Reports, 2023, 37(16): 21110218-6.
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2023, Vol. 37 
