Analysis of Chloride Diffusion into Partially Saturated Concrete
Analysis of Chloride Diffusion into Partially Saturated Concrete
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DOI：
10.14359/3874
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发表时间：
1993-09
期刊：
影响因子：
3.4
通讯作者：
A. Saetta;R. Scotta;R. Vitaliani
中科院分区：
文献类型：
--
作者：
A. Saetta;R. Scotta;R. Vitaliani
本文描述了分布参数模型框架内流过混凝土的水分、热量和氯离子的控制方程。考虑了问题的耦合项和非线性，并开发了基于有限元方法的数值程序来求解方程组。这项研究通过考虑离子扩散系数随混凝土参数的变化，研究了即使在部分饱和混凝土中的氯离子扩散。研究了各种环境条件下的氯离子侵入，并考虑了水分通量对通过多孔介质传输溶解离子的影响。还与实验测试进行了比较，以证明所提出的数值模型的可靠性和有效性。
This paper describes the governing equations of moisture, heat, and chloride ion flows through concrete within the framework of a distributed parameter model. The coupling terms and the nonlinearity of the problems are taken into account and a numerical procedure based on the finite element method is developed to solve the set of equations. This study examined chloride diffusion even in partially saturated concrete by considering the variability of ion diffusion coefficients with concrete parameters. Chloride intrusion in various environmental conditions was investigated and the effect of moisture flux in transporting dissolved ions through the porous media is considered. Comparisons with experimental tests are also carried out to show the reliability and the effectiveness of the proposed numerical model.