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Materials 2017, 10(4), 350; doi:10.3390/ma10040350

Corrosion Prediction with Parallel Finite Element Modeling for Coupled Hygro-Chemo Transport into Concrete under Chloride-Rich Environment

1
R&D Division, Hyundai E&C, Yongin-si, Gyeonggi-do 16891, Korea
2
Computer Science, University of Colorado Boulder, Boulder, CO 80309, USA
3
Civil, Environmental, and Architectural Engineering, University of Colorado Boulder, Boulder, CO 80309, USA
*
Author to whom correspondence should be addressed.
Academic Editor: Manuel Morcillo
Received: 26 February 2017 / Revised: 19 March 2017 / Accepted: 23 March 2017 / Published: 28 March 2017
(This article belongs to the Special Issue Fundamental and Research Frontier of Atmospheric Corrosion)
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Abstract

The prediction of the chloride-induced corrosion is very important because of the durable life of concrete structure. To simulate more realistic durability performance of concrete structures, complex scientific methods and more accurate material models are needed. In order to predict the robust results of corrosion initiation time and to describe the thin layer from concrete surface to reinforcement, a large number of fine meshes are also used. The purpose of this study is to suggest more realistic physical model regarding coupled hygro-chemo transport and to implement the model with parallel finite element algorithm. Furthermore, microclimate model with environmental humidity and seasonal temperature is adopted. As a result, the prediction model of chloride diffusion under unsaturated condition was developed with parallel algorithms and was applied to the existing bridge to validate the model with multi-boundary condition. As the number of processors increased, the computational time decreased until the number of processors became optimized. Then, the computational time increased because the communication time between the processors increased. The framework of present model can be extended to simulate the multi-species de-icing salts ingress into non-saturated concrete structures in future work. View Full-Text
Keywords: parallel finite element method; diffusion; coupled hygro-chemo; concrete degradation parallel finite element method; diffusion; coupled hygro-chemo; concrete degradation
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Na, O.; Cai, X.-C.; Xi, Y. Corrosion Prediction with Parallel Finite Element Modeling for Coupled Hygro-Chemo Transport into Concrete under Chloride-Rich Environment. Materials 2017, 10, 350.

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