Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Thermal Resistivity Dry-Out Curves for Three Sandy Soils
Thermal resistivity dry-out curves (TRDCs) are measured for three sandy soils representing a range of grain characteristics and size distribution. Experiments were conducted using an instrumented hanging column apparatus instrumented for automated measurement of specimen thermal resistivity, matric suction, and degree of saturation along an initial drainage path, thereby allowing both the TRDC and soil-water characteristic curve (SWCC) to be obtained concurrently. SWCC and TRDC measurements are compared with independent measurements obtained using a conventional hanging column method and a multiple-specimen method, respectively. Fine-grained sand is shown to have higher thermal resistivity than coarse-grained sand over the complete range of saturation. Results provide information that may be used to estimate thermal properties of unsaturated coarse-grained porous media in applications such as the design of buried high-voltage power cables or near-surface geothermal heat exchange loops.
Thermal Resistivity Dry-Out Curves for Three Sandy Soils
Thermal resistivity dry-out curves (TRDCs) are measured for three sandy soils representing a range of grain characteristics and size distribution. Experiments were conducted using an instrumented hanging column apparatus instrumented for automated measurement of specimen thermal resistivity, matric suction, and degree of saturation along an initial drainage path, thereby allowing both the TRDC and soil-water characteristic curve (SWCC) to be obtained concurrently. SWCC and TRDC measurements are compared with independent measurements obtained using a conventional hanging column method and a multiple-specimen method, respectively. Fine-grained sand is shown to have higher thermal resistivity than coarse-grained sand over the complete range of saturation. Results provide information that may be used to estimate thermal properties of unsaturated coarse-grained porous media in applications such as the design of buried high-voltage power cables or near-surface geothermal heat exchange loops.
Thermal Resistivity Dry-Out Curves for Three Sandy Soils
Oh, Hyunjun (Autor:in) / Yao, Jun (Autor:in) / Tinjum, James M. (Autor:in) / Likos, William J. (Autor:in)
Geo-Congress 2014 ; 2014 ; Atlanta, Georgia
Geo-Congress 2014 Technical Papers ; 2795-2803
24.02.2014
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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