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Mathematical Problems in Engineering
Volume 2017 (2017), Article ID 5760512, 13 pages
https://doi.org/10.1155/2017/5760512
Research Article

Developing a Model for Chloride Ions Transport in Cement Concrete under Dynamic Flexural Loading and Dry-Wet Cycles

1School of Materials Science & Engineering, Chang’an University, Xi’an, Shaanxi 710061, China
2School of Transportation, Southeast University, Nanjing, Jiangsu 210096, China
3Qinghai Research Institute of Transportation, Qinghai 810008, China

Correspondence should be addressed to Hua-xin Chen

Received 23 August 2017; Revised 5 November 2017; Accepted 28 November 2017; Published 24 December 2017

Academic Editor: Alessandro Arsie

Copyright © 2017 Bo-wen Guan 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.

Abstract

Chloride ions attack is the main factor leading to the degradation of concrete durability, while the diffusion process would be significantly aggravated under the dynamic flexural loading and dry-wet cycles. In this paper, the influence coefficients of dynamic flexural loading on chloride/water diffusion coefficients were established, based on the relationship between the dynamic flexural loading and the chloride ions diffusion coefficient of concrete. Based on the model of chloride ions transporting in dry-wet cycle environment, the transport model of chloride ions in concrete under the dynamic flexural loading and dry-wet cycles was established. The effects of different factors on the chloride ions transport law in concrete were analyzed through laboratory test. The results showed that the model was in good agreement with the experimental results. The theory and assumptions proposed applied in the model of chloride ions transport in concrete under the dynamic flexural loading and dry-wet cycles had certain rationality and scientificity.