Analytical Model for Residual Bond Strength of Corroded Reinforcement in Concrete Structures
Article
Chen, Hua-Peng and Nepal, J. 2016. Analytical Model for Residual Bond Strength of Corroded Reinforcement in Concrete Structures. Journal of Engineering Mechanics. 142 (2). https://doi.org/10.1061/(ASCE)EM.1943-7889.0000997
Authors | Chen, Hua-Peng and Nepal, J. |
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Abstract | Bond strength deterioration in corrosion-damaged reinforced concrete structures significantly affects serviceability and load-carrying capacity in their remaining service life. This paper presents a new analytical model for predicting the cracking development in the surrounding concrete and the residual bond strength of rebar in concrete structures due to reinforcement corrosion. The proposed analytical method adopts the thick-walled cylinder model for the cover concrete and considers the realistic properties of the corrosion-induced cracked concrete such as anisotropic behavior, residual tensile strength, and reduced tensile stiffness. As corrosion progresses, three phases for bond strength evolution associated with concrete cracking development are defined and the corresponding corrosion levels in each phase are determined. By using the constructed new governing equation, the crack width growth in the concrete cover and the radial bursting pressure at the bond interface are evaluated. The ultimate bond strength is then estimated from the contributions of adhesion, confinement, and corrosion pressure as a function of corrosion level. Finally, the effectiveness of the proposed analytical model is demonstrated by comparing the predicted results with experimental data available, and the results show that the proposed model is useful for predicting the bond strength evolution of the corroded rebar in concrete structures. |
Journal | Journal of Engineering Mechanics |
Journal citation | 142 (2) |
ISSN | 0733-9399 |
Year | 2016 |
Publisher | American Society of Civil Engineers (ASCE) |
Accepted author manuscript | License File Access Level Anyone |
Digital Object Identifier (DOI) | https://doi.org/10.1061/(ASCE)EM.1943-7889.0000997 |
Web address (URL) | https://doi.org/10.1061/(ASCE)EM.1943-7889.0000997 |
Publication dates | |
Online | 18 Aug 2015 |
Feb 2016 | |
Publication process dates | |
Deposited | 10 Oct 2018 |
Accepted | 20 Jul 2015 |
Accepted | 20 Jul 2015 |
Copyright holder | ©2015 American Society of Civil Engineers. |
Copyright information | This material may be downloaded for personal use only. Any other use requires prior permission of the American Society of Civil Engineers. This material may be found at https://doi.org/10.1061/(ASCE)EM.1943-7889.0000997. |
https://repository.uel.ac.uk/item/8527z
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Accepted author manuscript
Chen and Nepal (2015a)Analytical Model for Residual Bond Strength of Corroded Reinforcement in Concrete Structures(1).pdf | ||
License: All rights reserved | ||
File access level: Anyone |
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