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孔隙率与饱和度对粉土导热特性的影响(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2012年02期
Page:
42-46
Column:
研究论文
publishdate:
2012-04-10

Article Info:/Info

Title:
Influence of porosity and saturation on thermal properties of silty soils
Author(s):
WANG Haibo1YANG Ping1HE Zhongyi2
1. College of Civil Engineering, Nanjing Forestry University, Nanjing 210037, China; 2. Guangdong Tianxin Electric Power Engineering Testing Co., Ltd., Guangzhou 510000, China
Keywords:
silty soil thermal conductivity specific volume heat porosity saturation three-phase composition
Classification number :
TU445
DOI:
10.3969/j.jssn.1000-2006.2012.02.009
Document Code:
A
Abstract:
In order to study the influence of porosity and saturation on thermal properties of silty soils, thermal conductivity and specific volume heat of the saturated and unsaturated silty soils from Suzhou and Zhengzhou are measured with the ISOMET apparatus. The evolution relationships between thermo-physical parameters(thermal conductivity and specific volume heat), saturation and porosity are analyzed based on three phase composition of silty soils. The results indicate the thermal conductivity and specific volume heat of silty soils with constant porosity both are increased as saturation increased. The saturation of silty soils has a critical value(Sro). When the saturation Sr is greater than Sro, the specific volume heat is decreased as porosity increased. The relationship of porosity, saturation and thermal conductivity is nonlinear and the relationship of porosity, saturation and specific volume heat is linear.

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Last Update: 2012-04-10