Corrosion of Steel Fibers in Chloride-Contaminated Simulated Concrete Pore Solutions
Publication: Journal of Materials in Civil Engineering
Volume 35, Issue 2
Abstract
The corrosion of steel fibers is a direct cause of the deterioration of steel fiber-reinforced concrete in chloride environments. This study mainly investigated the corrosion behavior of steel fibers exposed to NaCl solutions with , 10, 11, 12, and 13. The corrosion rate of the steel fibers was calculated according to the change of the diameter and ultimate tensile load. The electrochemical parameters of the steel fibers corrosion were continuously monitored. The morphology of the steel fibers affected by chloride attack was observed by scanning electron microscope (SEM). The results reveal that the corrosion rate of the steel fibers decreased as the pH of the NaCl solution increased from 7 to 13, and it was very small at . According to the open circuit potential, corrosion potential, corrosion current density, and electrochemical impedance spectroscopy, the steel fibers exhibited a high corrosion tendency and corrosion rate when exposed to NaCl solutions with . However, they exhibited low corrosion tendency in the chloride solution with . The surface roughness of the steel fibers exhibited only a slight increase after exposure to the NaCl solution with for 180 days.
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Data Availability Statement
All data generated or used during this study appear in the published article.
Acknowledgments
The authors gratefully acknowledge the financial support of National Natural Science Foundation of China (52078468 and 52108207) and Natural Science Foundation of Henan (222300420080).
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Published In
Journal of Materials in Civil Engineering
Volume 35 • Issue 2 • February 2023
Copyright
© 2022 American Society of Civil Engineers.
History
Received: Mar 16, 2022
Accepted: May 23, 2022
Published online: Nov 30, 2022
Published in print: Feb 1, 2023
Discussion open until: Apr 30, 2023
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Cited by
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