• ISSN 0258-2724
  • CN 51-1277/U
  • EI Compendex
  • Scopus
  • Indexed by Core Journals of China, Chinese S&T Journal Citation Reports
  • Chinese S&T Journal Citation Reports
  • Chinese Science Citation Database
Volume 30 Issue 4
Jul.  2017
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Article Contents
LIU Zongmin, ZHAO Kunpu, MAO Jize. Transportation Model and Simulation of Chloride in Concrete under Electric Field[J]. Journal of Southwest Jiaotong University, 2017, 30(4): 725-730. doi: 10.3969/j.issn.0258-2724.2017.04.010
Citation: LIU Zongmin, ZHAO Kunpu, MAO Jize. Transportation Model and Simulation of Chloride in Concrete under Electric Field[J]. Journal of Southwest Jiaotong University, 2017, 30(4): 725-730. doi: 10.3969/j.issn.0258-2724.2017.04.010

Transportation Model and Simulation of Chloride in Concrete under Electric Field

doi: 10.3969/j.issn.0258-2724.2017.04.010
  • Received Date: 05 Nov 2015
  • Publish Date: 25 Aug 2017
  • For the study of the durability of concrete structures in the coupling environment of chlorine salt and stray current, transportation law of chloride in concrete under electric field was investigated. According to the Hamilton-type variational principle, a transportation model of chloride in concrete under electric field was established. Based on the view of mesoscopic, quantitative formula of water saturation of pore in concrete was established. Considering the effects of time factor and water saturation of pore on transportation, the diffusion coefficient of chloride under unsaturated state was corrected. The transportation process of chloride in concrete was simulated by comsol, And the transportation rate of chloride under electric field was compared with free diffusion rate under concentration gradient. It is a suitable way to study the durability and service life prediction of underground concrete structures by the chloride transportation model of concrete under electric field. In the influence of 10 V electric field, the transportation efficiency of chloride in concrete is equivalent to 769 times of the efficiency of chloride transportation under free diffusion.

     

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