Issue |
E3S Web of Conf.
Volume 382, 2023
8th International Conference on Unsaturated Soils (UNSAT 2023)
|
|
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Article Number | 06005 | |
Number of page(s) | 5 | |
Section | Understanding the Effect of Climate Change on the Environment and Infrastructure Through Unsaturated Soil Behavior | |
DOI | https://doi.org/10.1051/e3sconf/202338206005 | |
Published online | 24 April 2023 |
Improved Thermal Conductivity Function for Unsaturated Soil with Physics-based Parameters
1 Department of Structural Engineering, University of California San Diego, 9500 Gilman Dr., La Jolla, CA 92093-0085, USA
2 Department of Structural Engineering, University of California San Diego, 9500 Gilman Dr., La Jolla, CA 92093-0085, USA
3 Department of Structural Engineering, University of California San Diego, 9500 Gilman Dr., La Jolla, CA 92093-0085, USA
* Corresponding author: mccartney@ucsd.edu
This paper proposes a new relationship between thermal conductivity and degree of saturation of unsaturated soils, referred to as the thermal conductivity function (TCF). The new sigmoidal relationship between thermal conductivity and degree of saturation was developed so that all parameters have a physical meaning. After calibration of the model using data from the literature and comparison with other available TCFs, the parameters of the new TCF were related to those of the soil-water retention curves for the soils investigated in the calibration process. The linkage between the parameters of the TCF and SWRC indicates that the parameters reflect the point of air entry and pore size distribution of the soil, as well as the maximum and minimum thermal conductivity values encountered at saturated and dry conditions, respectively.
© The Authors, published by EDP Sciences, 2023
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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