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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Influence of Corrosion on Bond Behavior of Reinforcement Bars
Author(s): Y. Auyeung, P. Balaguru, and L. Chung
Publication: Symposium Paper
Appears on pages(s): 1051-1074
Keywords: bar; bond; corrosion; slip; strength
Abstract:Experimental results of the bond behavior of 10, 13, 19, and 25-mm diameter bars corroded to various levels are presented. A total of forty specimens were tested to obtain the bond - slip behavior. The corrosion level ranged from 0 to 4.79 percent diameter loss. Externally applied current was used to induce controlled amount of corrosion. The results were analyzed to study the influence of bar diameter and corrosion level on bond strength, slip at peak load, and overall bond - slip behavior. The results indicate that exponential reduction in bond strength occurs once the diameter loss exceeds a fraction of a millimeter. At a diameter loss of O.l-mm, the strength reductions are substantial. The reduction in slip at maximum load is even more significant with corrosion. The actual magnitude of corrosion can be predicted using the applied current input with reasonable accuracy.
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