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http://dx.doi.org/10.12989/cac.2014.13.2.149

Temperature effect on multi-ionic species diffusion in saturated concrete  

Damrongwiriyanupap, Nattapong (Civil Engineering Program, School of Engineering, University of Phayao)
Li, Linyuan (Department of Mathematics and Statistics, University of New Hampshire)
Limkatanyu, Suchart (Department of Civil Engineering, Faculty of Engineering, Prince of Songkla University)
Xi, Yunping (Department of Civil, Environmental, and Architectural Engineering, University of Colorado at Boulder)
Publication Information
Computers and Concrete / v.13, no.2, 2014 , pp. 149-171 More about this Journal
Abstract
This study presents the mathematical model for predicting chloride penetration into saturated concrete under non-isothermal condition. The model considers not only diffusion mechanism but also migration process of chloride ions and other chemical species in concrete pore solution such as sodium, potassium, and hydroxyl ions. The coupled multi-ionic transport in concrete is described by the Nernst-Planck equation associated with electro-neutrality condition. The coupling parameter taken into account the effect of temperature on ion diffusion obtained from available test data is proposed and explicitly incorporated in the governing equations. The coupled transport equations are solved using the finite element method. The numerical results are validated with available experimental data and the comparison shows a good agreement.
Keywords
chloride; concrete; temperature effect; Nernst-Planck equation; ionic diffusion;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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