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S.T. Yang¹, K.F. Li² and C.Q. Li³

¹Department of Civil and Environmental Engineering, University of Strathclyde, Glasgow, United Kingdom
²Department of Civil Engineering, Tsinghua University, Beijing, China
³School of Civil, Environmental and Chemical Engineering, RMIT University, Melbourne, Australia

doi:10.4203/ccp.108.212

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S.T. Yang, K.F. Li, C.Q. Li, "Non-Uniform Corrosion-Induced Reinforced Concrete Cracking: An Analytical Approach", in J. Kruis, Y. Tsompanakis, B.H.V. Topping, (Editors), "Proceedings of the Fifteenth International Conference on Civil, Structural and Environmental Engineering Computing", Civil-Comp Press, Stirlingshire, UK, Paper 212, 2015. doi:10.4203/ccp.108.212

Keywords: analytical model, non-uniform corrosion, reinforced concrete, cracking, applied load.

Summary

Corrosion of reinforcing steel in concrete is a global problem for reinforced concrete structures/infrastructures in a chloride and/or carbon dioxide-laden environment. It can lead to premature concrete cracking and spalling, and ultimately structural collapse. The costs of annual maintenance and repairs in the world have been reported as extremely high. In modelling of corrosion induced concrete cracking, the distribution of the corrosion products around the reinforcing steel is key to determining the expansive forces, whilst most researchers assume a uniform corrosion development. In this paper, a more realistic non-uniform corrosion distribution around the reinforcing steel is considered and an analytical model of the corrosion induced concrete cracking is derived. The effect of applied load on the corrosion induced cracking is also considered in the model. The complex variable method is employed to formulate the stress field in concrete. With the inputs from the actual corrosion rate history, the model developed can predict the time of the cracking initiation. The model derived can be used as a tool to assess the serviceability of corrosion affected concrete structures.

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Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 108 PROCEEDINGS OF THE FIFTEENTH INTERNATIONAL CONFERENCE ON CIVIL, STRUCTURAL AND ENVIRONMENTAL ENGINEERING COMPUTING Edited by: J. Kruis, Y. Tsompanakis and B.H.V. Topping Paper 212 Non-Uniform Corrosion-Induced Reinforced Concrete Cracking: An Analytical Approach S.T. Yang¹, K.F. Li² and C.Q. Li³ ¹Department of Civil and Environmental Engineering, University of Strathclyde, Glasgow, United Kingdom ²Department of Civil Engineering, Tsinghua University, Beijing, China ³School of Civil, Environmental and Chemical Engineering, RMIT University, Melbourne, Australia doi:10.4203/ccp.108.212 purchase the full-text of this paper Full Bibliographic Reference for this paper S.T. Yang, K.F. Li, C.Q. Li, "Non-Uniform Corrosion-Induced Reinforced Concrete Cracking: An Analytical Approach", in J. Kruis, Y. Tsompanakis, B.H.V. Topping, (Editors), "Proceedings of the Fifteenth International Conference on Civil, Structural and Environmental Engineering Computing", Civil-Comp Press, Stirlingshire, UK, Paper 212, 2015. doi:10.4203/ccp.108.212 Keywords: analytical model, non-uniform corrosion, reinforced concrete, cracking, applied load. Summary Corrosion of reinforcing steel in concrete is a global problem for reinforced concrete structures/infrastructures in a chloride and/or carbon dioxide-laden environment. It can lead to premature concrete cracking and spalling, and ultimately structural collapse. The costs of annual maintenance and repairs in the world have been reported as extremely high. In modelling of corrosion induced concrete cracking, the distribution of the corrosion products around the reinforcing steel is key to determining the expansive forces, whilst most researchers assume a uniform corrosion development. In this paper, a more realistic non-uniform corrosion distribution around the reinforcing steel is considered and an analytical model of the corrosion induced concrete cracking is derived. The effect of applied load on the corrosion induced cracking is also considered in the model. The complex variable method is employed to formulate the stress field in concrete. With the inputs from the actual corrosion rate history, the model developed can predict the time of the cracking initiation. The model derived can be used as a tool to assess the serviceability of corrosion affected concrete structures. purchase the full-text of this paper (price £20) go to the previous paper go to the next paper return to the table of contents return to the book description purchase this book (price £75 +P&P)
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