Dependency of thermal properties of clayey soils on salt concentration
| Project/Area Number |
23658194
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Irrigation, drainage and rural engineering/Rural planning
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| Research Institution | Meiji University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
SATO Michio 明治大学, 農学部, 講師 (00588775)
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| Project Period (FY) |
2011 – 2013
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2013: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2012: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2011: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
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| Keywords | 粘土鉱物 / DPHP法 / 熱的性質 / 熱伝導率 / 体積熱容量 / 熱拡散係数 / NaCl溶液濃度 / CaCl2溶液濃度 / モデル / 塩類 / 熱伝導係数 / 拡散2重層 / サーモTDRプローブ / 凝集構造 / 分散 / 塩水 |
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| Research Abstract |
Thermal properties, thermal conductivity, volumetric heat capacity, and thermal diffusivity, were measured for soils containing different clay minerals, montmorillonite, kaolinite, and allophone, moistened with several concentrations of NaCl or CaCl2 solutions using a dual-probe heat-pulse, DPHP, technique. Thermal conductivity and thermal diffusivity for all soils moistened with NaCl solution showed a dip decrease at 0.05 mol/L. This may be resulted from altering arrangement of clay minerals due to salt solutions. For soils moistened with other concentrations of NaCl or CaCl2 solution, thermal properties decrease with increases in concentrations. A 2-D F.E.M. model revealed that alternation of clay mineral arrangement hindered heat flow.
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Report
(4 results)
Research Products
(3 results)
