Evolutionary regularity of bond property for reinforced concrete after electrochemical rehabilitation

Reinforcement corrosion, due to the presence of chloride ions, is a major cause of the degradation of reinforced concrete structures. Nowadays, electrochemical rehabilitation (ER) is becoming a common technique for repairing reinforced structures. Due to the transmission properties of the micro-pore...

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Bibliographic Details
Published in工程科学学报 Vol. 43; no. 6; pp. 778 - 785
Main Authors Wei-jie FAN, Yun-tao WU, Jiang-hong MAO, Wei-liang JIN, Jin-sen CHEN
Format Journal Article
LanguageChinese
Published Science Press 01.06.2021
Subjects
bond strength
deterioration mode
electrochemical parameters
electrochemical rehabilitation
reinforced concrete
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Summary:Reinforcement corrosion, due to the presence of chloride ions, is a major cause of the degradation of reinforced concrete structures. Nowadays, electrochemical rehabilitation (ER) is becoming a common technique for repairing reinforced structures. Due to the transmission properties of the micro-pores in concrete, chloride ions can be transferred to the outside of the concrete through the pores under the driven force of electric field. Compared with other conventional technologies, ER presents many advantages, such as high efficiency and little influence on the environment and surroundings. However, previous studies indicate that ER exhibits negative effect on the interfacial bonding properties of steel concrete. As the main influence factor for ER, varying current densities may consequently change the bond loss between steel and concrete. In addition, large current density significantly reduces interfacial bond. However, current studies lack relevant quantitative research results and fail to propose an effect
ISSN:2095-9389
DOI:10.13374/j.issn2095-9389.2020.04.01.004