Research Status of Electrochemical Chloride Extraction Technology ofReinforced Concrete

Abstract

Abstract: The electrochemical chloride extraction (ECE) technology evacuates chloride ions by applying a constant voltage between the external anode and the cathode of reinforcing bars,which aims to recover the passivation of the reinforcements and also protecting the reinforced concrete.To have a better understanding of ECE technology,this paper has summarized the advanced achievements on the topic of ECE by researchers worldwide,meanwhile,the impact factors are also investigated.Moreover,the effects of ECE technology on the bonding strength,macroscopic performance and microstructure of reinforced concrete are comprehensively introduced.Finally,the remaining drawbacks of ECE technology are put forward and the prospect of future researches is also proposed.It is expected that electrochemical dechlorination technology will play a better role in improving the durability of coastal concrete structures.

Key words: reinforced concrete, anode, electrochemical chloride extraction, chloride extraction efficiency, interfacial bond strength, durability, corrosion of reinforcement

CLC Number:

TU528

LI Shupeng, JIN Zuquan, XIONG Chuansheng. Research Status of Electrochemical Chloride Extraction Technology ofReinforced Concrete[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2021, 40(1): 25-33.

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