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Effect of environmental factors on electrochemical corrosion of galvanized steel wires for bridge cables

Rou Li (Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education, Southeast University, Nanjing, China and School of Civil Engineering, Southeast University, Nanjing, China)
Changqing Miao (Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education, Southeast University, Nanjing, China and School of Civil Engineering, Southeast University, Nanjing, China)
Tinghua Wei (Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education, Southeast University, Nanjing, China and School of Civil Engineering, Southeast University, Nanjing, China)

Anti-Corrosion Methods and Materials

ISSN: 0003-5599

Article publication date: 7 December 2021

Issue publication date: 3 January 2022

231

Abstract

Purpose

This paper aims to investigate the electrochemical corrosion rate of galvanized steel wires for bridge cables.

Design/methodology/approach

The electrochemical corrosion test and response surface analysis of galvanized steel wires were carried out, and the variety of polarization curves of galvanized steel wires under different corrosion parameters was discussed. The expression of corrosion rate of galvanized steel wires under the action of single and multi-factor coupling was established.

Findings

The polarization curves of galvanized steel wires under different Cl- concentrations, pH value and temperature were basically similar, but all show different degrees of deviation and some anodic polarization curves had inflection points. For example, when the Cl- concentration reached 3.5%, the corrosion rate of galvanized steel wire was four times that of pure water.

Originality/value

The influence relationship of single and multi-factor coupling on the corrosion rate of galvanized steel wires was as follows: RCl > RT * Cl > RT > RpH > RpH * T > RpH * Cl.

Keywords

Acknowledgements

The financial support was provided by the National Natural Science Foundation of China under Grant No. 51778135 and the Scientific Research Foundation of the Graduate School of Southeast University under grant No. YBPY2128. Additionally, this work was also supported by the Postgraduate Research and Practice Innovation Program of Jiangsu Province (KYCX20_0116) and the Fundamental Research Funds for the Central Universities (3205002106D).

Citation

Li, R., Miao, C. and Wei, T. (2022), "Effect of environmental factors on electrochemical corrosion of galvanized steel wires for bridge cables", Anti-Corrosion Methods and Materials, Vol. 69 No. 1, pp. 111-118. https://doi.org/10.1108/ACMM-07-2021-2522

Publisher

:

Emerald Publishing Limited

Copyright © 2021, Emerald Publishing Limited

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