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Weak impact of underground water on corrosion inhibition of resistance-reducing agent

Hui Su (School of Materials Science and Engineering, Xiangtan University, Xiangtan, China)
Lanlan Liu (Maintenance Company, State Grid Hunan Electric Power Co. Ltd., Changsha, China)
Yang Yang (School of Materials Science and Engineering, Xiangtan University, Xiangtan, China)
Zhen Zhong (School of Materials Science and Engineering, Xiangtan University, Xiangtan, China)
Song Xu (State Grid Hunan Electric Power Corporation, Research Institute, Changsha, China)
Yi Xie (State Grid Hunan Electric Power Corporation, Research Institute, Changsha, China)
Tangqing Wu (School of Materials Science and Engineering, Xiangtan University, Xiangtan, China)

Anti-Corrosion Methods and Materials

ISSN: 0003-5599

Article publication date: 11 January 2023

Issue publication date: 9 February 2023

73

Abstract

Purpose

The purpose of this paper is to study the corrosion behavior of Q235 steel in the bentonite-based resistance-reducing agent (RRA) with different infiltration rates of underground water.

Design/methodology/approach

The corrosion behavior of the steel in underground water was assessed by weight loss experiment, electrochemical impedance spectroscopy and polarization curve.

Findings

The results showed that the corrosion rate of the steel in the RRA pastes was much lower than that in the original acidic soil. The underground water infiltration slightly accelerated the corrosion rate of the steel in the RRA pastes, but the acceleration role is weak. The bentonite-based RRA can be compatibly applied in the acidic soil.

Originality/value

The bentonite-based RRA can significantly reduce the corrosion rate of the steel and is suitable to compatibly apply in the acidic soil.

Keywords

Acknowledgements

The authors are grateful for the financial support of Hunan Provincial Key R&D Program of China (2021GK2008).

Citation

Su, H., Liu, L., Yang, Y., Zhong, Z., Xu, S., Xie, Y. and Wu, T. (2023), "Weak impact of underground water on corrosion inhibition of resistance-reducing agent", Anti-Corrosion Methods and Materials, Vol. 70 No. 2, pp. 69-77. https://doi.org/10.1108/ACMM-11-2022-2720

Publisher

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Emerald Publishing Limited

Copyright © 2022, Emerald Publishing Limited

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