Abstract
Thermophysical parameters of cohesive soil are important properties in the design of the ground source heat pump system and the ventilation system of subway. In this paper, the more precise measurements are taken to study the thermophysical parameters of cohesive soil based on the transient heat flow probe method by KD2 pro. The results show that the thermal conductivity and capacity increase obviously as water content enhances. The higher the temperature, the higher the thermal conductivity. So the temperature effect of thermal conductivity should be taken into consideration under some certain temperatures. The modification of Johansen's equations indicates the good applicability for the same type of cohesive soil, which can be used for predicting the thermal conductivity of cohesive soil with different water content and dry densities.
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