Hydro-Thermal Properties of the Unsaturated Soil

Conference paper
Part of the Sustainable Civil Infrastructures book series (SUCI)


In this paper, 10 approaches were initially used to predict the thermal conductivity (k) of different soils. The comparison showed that three principal parameters indicating sand content (xs), dry density (ρdry), and degree of saturation (Sr) influenced highly the soil thermal conductivity. Moreover, 3 approaches for the volumetric heat capacity (Cv) of soil were used to predict the experimental data from the literature. The result showed that the classical approaches can induce the errors because of the non-consideration of the mineral and water content. This insufficiency was solved by proposing a new model. Finally, the most compatible approaches for the thermal properties were implemented into a 2D subsurface model using finite element method (FEM). The variation of suction (s), thermal conductivity (k) and temperature (T) with time and space was then investigated in the numerical simulation model under the influence of seasonal suction and temperature on the top boundary.


Soil Volumetric Heat Capacity Sand Content Thermal Response Test (TRT) Residual Volumetric Water Content Hydrothermal Transfer 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



This work is supported by the China Scholarship Council (CSC).


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© Springer International Publishing AG, part of Springer Nature 2019

Authors and Affiliations

  1. 1.INSA de StrasbourgStrasbourg CedexFrance

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