The simultaneous heat and water (shaw) model was tested with soil water content and temperature profile data for a soil located nearrosemount, minnesota. The predicted frost-thaw depth, soil water content, and temperature at depths of 10, 20, and 80 cm are compared with measured values. The results indicate that the prediction of frost depth and temperature profile agrees well with measured field data, whereas agreement between measured and predicted liquid soil water content is fair. The model was applied to a hypothetical case of apaved soil to assess the impact of the presence of the pavement on frost penetration into the soil profile. It was found that the frostfront penetrates deeper into the underlying soil in the case of a paved soil surface in contrast to the case of an unpaved soil. This paper appears in transportation research record no. 1307, Pavement analysis, design, rehabilitation, and environmental factors 1991.
Samenvatting