考虑时间效应的电化学修复后RC柱抗震性能试验研究

doi:10.11896/cldb.21110218

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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.

Key words： concrete structure electrochemical repair low cycle reciprocating seismic performance time effect

Published: 25 August 2023 Online: 2023-08-14

CLC number:

TU375

Fund:National Natural Science Foundation of China (51878610, 51638013, 52108177).

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	Articles by authors
	WANG Xianglin
	MAO Jianghong
	SONG Zhigang
	MA Jiaxing
	ZHANG Jun

Cite this article:

WANG Xianglin,MAO Jianghong,SONG Zhigang, et al. Experimental Study on Seismic Performance of RC Column After Electrochemical Repair Considering Time Effect[J]. Materials Reports, 2023, 37(16): 21110218-6.

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http://www.mater-rep.com/EN/10.11896/cldb.21110218 OR http://www.mater-rep.com/EN/Y2023/V37/I16/21110218

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