doi: 10.7763/IJET.2012.V4.454
Bond Strength between Corroded Steel Rebar and Concrete
Marco Valente
- the Department of Structural Engineering, Politecnico di Milano, Milan, Italy
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.
Keywords
- Bond strength
- corrosion
- experimental tests
- finite element analyses
- steel-concrete bond
How to 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. https://doi.org/ 10.7763/IJET.2012.V4.454
Copyright & License
Copyright © 2012 by the authors. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).