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Advances in Materials Science and Engineering
Volume 2015, Article ID 510845, 10 pages
Research Article

On the Durability of Sealable Circular Concrete Structures under Chloride Environment

1Jiangsu Key Laboratory of Engineering Mechanics, Department of Engineering Mechanics, Southeast University, Nanjing, Jiangsu 210096, China
2Department of Mechanical Engineering, University of Houston, Houston, TX 77204, USA

Received 3 March 2015; Accepted 26 May 2015

Academic Editor: Ana S. Guimarães

Copyright © 2015 Changwen Mi et al. 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.


Reinforcement corrosion resulting from chloride attack is one major mechanism that compromises concrete durability. Numerical methods were commonly used for tackling Fick’s diffusion equations. In this paper, we developed a Crank-Nicolson based finite difference scheme suitable for circular concrete structures. Both a time-dependent surface chloride model and diffusivity were considered. The impact of an ideal sealer on chloride redistribution was further investigated. Results suggested that the chloride threshold depth in a concrete structure is greatly affected by the radius of curvature, environment severity, and diffusivity. For sealable concrete structures, both the sealer application timing and location are of great importance.