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Effect of Porosity ...
Effect of Porosity on Soil-Water Retention Curves : Theoretical and Experimental Aspects
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- Liu, Chang (författare)
- China Three Gorges Univ, Coll Hydraul & Environm Engn, Yichang 443002, Peoples R China.;China Three Gorges Univ, Minist Educ, Key Lab Geol Hazards Three Gorges Reservoir Area, Yichang 443002, Peoples R China.
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- Tong, Fuguo (författare)
- China Three Gorges Univ, Minist Educ, Key Lab Geol Hazards Three Gorges Reservoir Area, Yichang 443002, Peoples R China.
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- Yan, Long (författare)
- Hohai Univ, Inst Geotech Engn, Nanjing 210098, Peoples R China.
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- Zhou, Hongbo (författare)
- Nonferrous Geol Explorat & Res Inst Ltd Liabil Co, Shenyang 110013, Peoples R China.
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- Hao, Shuang (författare)
- KTH,Hållbar utveckling, miljövetenskap och teknik
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China Three Gorges Univ, Coll Hydraul & Environm Engn, Yichang 443002, Peoples R China;China Three Gorges Univ, Minist Educ, Key Lab Geol Hazards Three Gorges Reservoir Area, Yichang 443002, Peoples R China. China Three Gorges Univ, Minist Educ, Key Lab Geol Hazards Three Gorges Reservoir Area, Yichang 443002, Peoples R China. (creator_code:org_t)
- Hindawi Limited, 2020
- 2020
- Engelska.
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Ingår i: Geofluids. - : Hindawi Limited. - 1468-8115 .- 1468-8123. ; 2020
- Relaterad länk:
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https://doi.org/10.1...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Porosity change is a common characteristic of natural soils in fluid-solid interaction problems, which can lead to an obvious change of the soil-water retention curve (SWRC). The influence of porosity on soil water retention phenomena is investigated by a theoretical model and an experimental test in this study. A model expressing the change in suction with porosity and effective saturation is put forward theoretically. The model is based on an idealization of three-phase porous materials, the pore structures of which are homogeneous and isotropic. It accounts for the porosity effect on soil water retention, using four parameters with clear physical meanings. The presented model can obtain the SWRC at any porosity, which will reduce the test number required in characterizing the hydraulic behavior of soil. A laboratory experiment for loamy sand with different porosities is performed. The test results show that suction has a significant variation with changes in porosity and decreases with the increase of porosity. The formulation is verified by both the test data and the literature data for FEBEX bentonite and Boom clay. The very good agreements between measured and predicted results show that the SWRC model is reliable and feasible for various soils.
Ämnesord
- LANTBRUKSVETENSKAPER -- Lantbruksvetenskap, skogsbruk och fiske (hsv//swe)
- AGRICULTURAL SCIENCES -- Agriculture, Forestry and Fisheries (hsv//eng)
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