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International Journal of Polymer Science
Volume 2017, Article ID 8703736, 12 pages
Research Article

Simulation of Chloride Ingress through Surface-Coated Concrete during Migration Test Using Finite-Difference and Finite-Element Method

Department of Civil Engineering, Kyonggi University, Suwon 16227, Republic of Korea

Correspondence should be addressed to Seyoon Yoon; moc.liamg@nooyesnooy

Received 20 December 2016; Revised 21 March 2017; Accepted 21 March 2017; Published 17 May 2017

Academic Editor: Joao M. L. Reis

Copyright © 2017 Seyoon Yoon. 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.


Polymer surface coatings are commonly used to enhance the corrosion resistance of concrete structures in saline environments to ionic diffusivity; this diffusivity can be determined by migration tests. This paper presents the simulation of the effects of the surface coatings on migration tests by solving the Nernst-Planck/Poisson model using both finite-difference method and finite-element method. These two numerical methods were compared in terms of their accuracy and computational speed. The simulation results indicate that the shapes of ionic profiles after migration tests depend on the effectiveness of surface coatings. This is because highly effective surface coatings can cause a high ionic concentration at the interface between coating and concrete. The simulation results were also compared to homogenized cases where a homogenized diffusion coefficient is employed. The result shows that the homogenized diffusion coefficient cannot represent the diffusivity of the surface-coated concrete.