Abstract In geotechnical engineering applications, the modeling of artificial ground freezing is primarily aimed at predicting the extent of frozen zone around the cooling sources. This modeling could be more or less complex not only according to the material’s texture and the hydro-geological context but also to the salt concentration of the saturating fluid. Through a thermodynamically consistent framework, a fully coupled heat and mass transfer formulation considering the salinity effect was derived. This formulation was intended to capture the most relevant phenomena of ground freezing encountered in geotechnical applications. Particular attention was given to the phase change problem where appropriate simplifying assumptions were made in order to make the proposed methodology easier to apply in field applications. The proposed approach was validated by means of freezing-thawing laboratory tests, carried out on specimens initially fully saturated with sodium chloride solutions at various concentrations. Good agreement was obtained between the measured and predicted results.

中文翻译：

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考虑饱和流体的盐度，模拟地面冻结期间的传热和传质

摘要 在岩土工程应用中，人工地面冻结建模的主要目的是预测冷源周围冻结带的范围。这种建模可能或多或少复杂，不仅取决于材料的质地和水文地质背景，还取决于饱和流体的盐浓度。通过热力学一致的框架，推导出考虑盐度效应的完全耦合的传热传质公式。该公式旨在捕捉岩土工程应用中遇到的最相关的地面冻结现象。特别关注相变问题，其中进行了适当的简化假设，以使所提议的方法更易于在现场应用中应用。所提出的方法通过冻融实验室测试得到验证，该测试对最初用各种浓度的氯化钠溶液完全饱和的样本进行。在测量和预测结果之间获得了良好的一致性。