Chloride Ion Penetration in Stressed Concrete
Publication: Journal of Materials in Civil Engineering
Volume 23, Issue 8
Abstract
Steel corrosion owing to chloride ion penetration is one of the most common problems related to the durability of concrete structures. Although previous studies of this phenomenon have produced useful results, they primarily focused on unstressed concrete. To study the effect of stress on the resistance of concrete to chloride ion penetration, tests of stressed specimens exposed to salt solution immersion and salt spray were performed. The chloride contents in uncracked concrete specimens with different water-cement ratios, states and levels of stress, and environmental conditions are analyzed in this article. The results show that the resistance of concrete to chloride ion penetration can be improved by reducing the water-cement ratio. The content of chloride ions is higher in concrete stressed in tension than in unstressed concrete. For concrete stressed in compression, chloride content depends on stress level. Salt solution immersion is more severe than salt spray.
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Acknowledgments
This work was supported by Doctoral Fund of Ministry of Education of China (UNSPECIFIED20090072110045). The experimental work was performed by the third author in the Key Laboratory of Advanced Civil Engineering Materials of Tongji University. The authors would like to thank Associate Professor P. Gauvreau (Departmental of Civil Engineering, University of Toronto, Canada) for his help in improving the paper in English. Finally, the authors wish to thank the reviewers of this paper for their comments and suggestions.
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Information & Authors
Information
Published In
Journal of Materials in Civil Engineering
Volume 23 • Issue 8 • August 2011
Pages: 1145 - 1153
Copyright
© 2011 American Society of Civil Engineers.
History
Received: Sep 21, 2009
Accepted: Jan 25, 2011
Published online: Jan 28, 2011
Published in print: Aug 1, 2011
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