Abstract—Experimental tests of push-pull type using reinforcement bars embedded in concrete specimens and finite element analyses were carried out in order to investigate the effects of natural corrosion, confinement and repeated cyclic loading on bond between steel rebar and concrete. The results obtained in the experimental tests under monotonic and repeated loading history were affected by the conditions of the concrete cover and by the different corrosion levels of the longitudinal and transverse reinforcement. Bond strength degradation was observed due to repeated cyclic loadings. Three-dimensional finite element models were developed on the basis of the laboratory tests and parametric analyses were conducted to provide a better understanding of the experimental results. The analyses showed fairly agreement with the experimental results as regards the evaluation of the effects of reinforcing bar corrosion on bond strength reduction. Numerical results pointed out that high confinement levels provided by steel reinforcement enhanced bond strength and delayed the onset of bond deterioration.
Index Terms—Bond strength, corrosion, experimental tests, finite element analyses, steel-concrete bond.
Marco Valente is with the Department of Structural Engineering, Politecnico di Milano, Milan, Italy (e-mail: valente@stru.polimi.it).
Cite: Marco Valente, "Bond Strength between Corroded Steel Rebar and Concrete," International Journal of Engineering and Technology vol. 4, no. 5, pp. 653-656, 2012.
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