QUANTATIVE EVALUATION OF INFLUENCE OF REBAR CORROSION ON STRUCTURAL PERFORMANCE OF DETERIORATED RC BEAMS
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Published:2002
M Iwanami, H Yokota, F Sato, 2002. "QUANTATIVE EVALUATION OF INFLUENCE OF REBAR CORROSION ON STRUCTURAL PERFORMANCE OF DETERIORATED RC BEAMS", Challenges of Concrete Construction: Volume 6, Concrete for Extreme Conditions: Proceedings of the International Conference held at the University of Dundee, Scotland, UK on 9–11 September 2002, Ravindra K. Dhir, Michael J. McCarthy, Moray D. Newlands
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This paper describes the relationship between corrosion of rebars and structural performance of reinforced concrete (RC) beams subject to corrosion damage. By quantifying the degree of corrosion using an index of cross-sectional loss of rebars, decrease in load carrying capacity of deteriorated RC beams was well explained. It also coincided with the result from the long-term exposure test under actual marine environment. Moreover, the applicability of electrochemical measurement was examined to a nondestructive estimation method of corrosion of rebars in concrete. As a result, polarization resistance was a more useful index than half-cell potential in heavily deteriorated RC beams. Integrating the inverse of polarization resistance along exposed time enabled to evaluate corrosion of rebars in concrete accurately and quantitatively.
INTRODUCTION
EXPERIMENTAL PROCEDURES
RESULTS AND DISCUSSION
CONCLUSIONS
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