Effect of temperature on the soil–water retention characteristics in unsaturated soils: Analytical and experimental approaches
In unsaturated soil mechanics, the soil–water retention curve (SWRC) continues to play an important role, since it provides the necessary links between the properties and behaviour of unsaturated soils with a variety of engineering challenges. The temperature has been identified as the main factor i...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-06-01
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| Series: | Soils and Foundations |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0038080623000306 |
| _version_ | 1827912050490212352 |
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| author | Tuan A. Pham Amirhossein Hashemi Melis Sutman Gabriela M. Medero |
| author_facet | Tuan A. Pham Amirhossein Hashemi Melis Sutman Gabriela M. Medero |
| author_sort | Tuan A. Pham |
| collection | DOAJ |
| description | In unsaturated soil mechanics, the soil–water retention curve (SWRC) continues to play an important role, since it provides the necessary links between the properties and behaviour of unsaturated soils with a variety of engineering challenges. The temperature has been identified as the main factor influencing SWRC as compared to a variety of other parameters. The goal of this research is to describe theoretical and experimental aspects of the temperature effect on unsaturated soil water retention phenomena. Theoretically, a brief review of the constitutive laws governing the thermal-hydro-mechanical (THM) behaviour of unsaturated soils is presented, along with links between variations in suction with water content, temperature, and void ratio. It also provides a broad framework that would to be well adapted to describing many specific circumstances. Through a closed-form predictive relationship that is developed in this framework, the effect of temperature is examined. By using this relationship, the soil–water retention curve at arbitrary temperature could be determined from one at a reference temperature, therefore significantly decreasing the number of tests necessary to describe the thermo-hydro-mechanical behaviour of a soil. Besides, the SWRC of kaolinite clay was also measured at three different temperatures in an experimental program. The test findings reveal that when the temperature rises, the SWRC decreases significantly. The experimental results were then integrated with sixteen other available data sets covering a wide range of soil types, densities, and suction to create a complete verification program for analytical models. The proposed model has a good performance and reliability in forecasting the fluctuation of non-isothermal SWRC than any existing model, according to statistical assessment results. The analytical model can be used to examine the thermo-hydro-mechanical characteristics of unsaturated soils in numerical simulations. |
| first_indexed | 2024-03-13T02:10:39Z |
| format | Article |
| id | doaj.art-013d0afa9449416c96f379072f10fc74 |
| institution | Directory Open Access Journal |
| issn | 2524-1788 |
| language | English |
| last_indexed | 2024-03-13T02:10:39Z |
| publishDate | 2023-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Soils and Foundations |
| spelling | doaj.art-013d0afa9449416c96f379072f10fc742023-07-01T04:33:39ZengElsevierSoils and Foundations2524-17882023-06-01633101301Effect of temperature on the soil–water retention characteristics in unsaturated soils: Analytical and experimental approachesTuan A. Pham0Amirhossein Hashemi1Melis Sutman2Gabriela M. Medero3Corresponding author.; Heriot-Watt University, School of Energy, Geoscience, Infrastructure and Society, EH14 4AS Edinburgh, UKHeriot-Watt University, School of Energy, Geoscience, Infrastructure and Society, EH14 4AS Edinburgh, UKHeriot-Watt University, School of Energy, Geoscience, Infrastructure and Society, EH14 4AS Edinburgh, UKHeriot-Watt University, School of Energy, Geoscience, Infrastructure and Society, EH14 4AS Edinburgh, UKIn unsaturated soil mechanics, the soil–water retention curve (SWRC) continues to play an important role, since it provides the necessary links between the properties and behaviour of unsaturated soils with a variety of engineering challenges. The temperature has been identified as the main factor influencing SWRC as compared to a variety of other parameters. The goal of this research is to describe theoretical and experimental aspects of the temperature effect on unsaturated soil water retention phenomena. Theoretically, a brief review of the constitutive laws governing the thermal-hydro-mechanical (THM) behaviour of unsaturated soils is presented, along with links between variations in suction with water content, temperature, and void ratio. It also provides a broad framework that would to be well adapted to describing many specific circumstances. Through a closed-form predictive relationship that is developed in this framework, the effect of temperature is examined. By using this relationship, the soil–water retention curve at arbitrary temperature could be determined from one at a reference temperature, therefore significantly decreasing the number of tests necessary to describe the thermo-hydro-mechanical behaviour of a soil. Besides, the SWRC of kaolinite clay was also measured at three different temperatures in an experimental program. The test findings reveal that when the temperature rises, the SWRC decreases significantly. The experimental results were then integrated with sixteen other available data sets covering a wide range of soil types, densities, and suction to create a complete verification program for analytical models. The proposed model has a good performance and reliability in forecasting the fluctuation of non-isothermal SWRC than any existing model, according to statistical assessment results. The analytical model can be used to examine the thermo-hydro-mechanical characteristics of unsaturated soils in numerical simulations.http://www.sciencedirect.com/science/article/pii/S0038080623000306Unsaturated soilSoil–water retention curveSoil suctionThermo-hydro-mechanicalTemperatureNon-isothermal models |
| spellingShingle | Tuan A. Pham Amirhossein Hashemi Melis Sutman Gabriela M. Medero Effect of temperature on the soil–water retention characteristics in unsaturated soils: Analytical and experimental approaches Soils and Foundations Unsaturated soil Soil–water retention curve Soil suction Thermo-hydro-mechanical Temperature Non-isothermal models |
| title | Effect of temperature on the soil–water retention characteristics in unsaturated soils: Analytical and experimental approaches |
| title_full | Effect of temperature on the soil–water retention characteristics in unsaturated soils: Analytical and experimental approaches |
| title_fullStr | Effect of temperature on the soil–water retention characteristics in unsaturated soils: Analytical and experimental approaches |
| title_full_unstemmed | Effect of temperature on the soil–water retention characteristics in unsaturated soils: Analytical and experimental approaches |
| title_short | Effect of temperature on the soil–water retention characteristics in unsaturated soils: Analytical and experimental approaches |
| title_sort | effect of temperature on the soil water retention characteristics in unsaturated soils analytical and experimental approaches |
| topic | Unsaturated soil Soil–water retention curve Soil suction Thermo-hydro-mechanical Temperature Non-isothermal models |
| url | http://www.sciencedirect.com/science/article/pii/S0038080623000306 |
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