Evaluating the stray current corrosion of steel rebar in different layouts

Evaluating the stray current corrosion of steel rebar in different layouts

Chen, Zhipei (Beijing Jiaotong University)
Gao, Liang (Beijing Jiaotong University)
Koleva, D.A. (TU Delft Materials and Environment)

2022

By different testing methods (electrochemical techniques, potential shift monitoring, and Environmental Scanning Electron Microscope), this research evaluates the stray current corrosion of steel rebar in different layouts. The more significant corrosion state is observed when the steel bar is parallel to stray current flow, compared to the situation as a steel bar is vertical to the stray current. These outcomes are further clarified by the recorded level of stray current picked-up by steel rebar. It is found that the level of current actually picked-up by the steel rebar is decreasing. At the instant when the stray current supply is just turned off, an opposite current flow (back flow) is recorded. Besides an expansion of the database for monitoring stray current interference on reinforced concrete structures, the recorded results can be the basis for better understanding the process of stray current interference.

Corrosion
Electrochemical response
Steel-mortar interface
Stray current

http://resolver.tudelft.nl/uuid:12054d7f-3907-4631-b7b9-a3b33de7928d

https://doi.org/10.1016/j.measurement.2022.111217

2023-07-01

0263-2241

Measurement, 196

Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

Institutional Repository

journal article

© 2022 Zhipei Chen, Liang Gao, D.A. Koleva