Corrosion Resistance of Construction Steel in Conditions of Simultaneous Dynamic Loading and Chloride-Containing Corrosive Environment
Publication: Journal of Materials in Civil Engineering
Volume 30, Issue 6
Abstract
Corrosion of steel reinforcement is the main focus of many studies on condition assessment of road infrastructure. The major uncertainty involves the behavior of steel rebar during dynamic loading imposed by traffic. Especially in countries that use deicing salts during winter, a combined loading situation emerges in which stress, frequency, and chlorides are present at the same time. Laboratory tests are conducted to evaluate the performance of single steel rebars simultaneously exposed to different model media (alkaline and chloride-containing solutions), different frequencies, and different initial stress levels. These so-called chloride-exposed fatigue tests show the impact of chloride-induced corrosion on the performance of dynamically loaded rebar. Despite the well-known low susceptibility of construction steel to enhanced stress-induced damage in a corrosive medium, the recorded behavior indicates altered electrochemical performance under dynamic load. The results allow for an alternative view of the assessment of service-life design of infrastructure.
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Acknowledgments
The authors thank K. van Beek, Dienst Elektronische en Mechanische Ontwikkeling (DEMO), Delft University of Technology, for help with the experimental program. This work was performed in the frame of the postgraduate training of the first author at Delft University of Technology, Netherlands.
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Published In
Journal of Materials in Civil Engineering
Volume 30 • Issue 6 • June 2018
Copyright
©2018 American Society of Civil Engineers.
History
Received: Feb 22, 2017
Accepted: Nov 15, 2017
Published online: Mar 27, 2018
Published in print: Jun 1, 2018
Discussion open until: Aug 27, 2018
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