Abstract
This paper presents an approach for predicting heat and mass transfer in freezing unsaturated soil when frost heave does not occur. The theoretical formulation uses soil-freezing and soil-water characteristic curve data to combine the heat and mass transfer relationships into a single equation for freezing or frozen regions of the soil. Numerical simulations were compared with the results of freezing tests for a closed system of fine silica flour where large moisture redistribution occurred without frost heave. Accurate predictions of ice content and water content were obtained using a single permeability versus suction function with no impedance factor. The permeability function was obtained using a recently developed method for predicting permeability functions for unsaturated soils using the soil-water characteristic curve. (A)
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