Laboratory Tests for Temperature Effects of Clayey Soil Permeability
详细信息
- 责任者：Wang Yuan (ACEI ; Department of Earth Science and Engineering ; Nanjing University ; Nanjing 210093 ; China) ; Shi Bin
- 刊名：Journal of Engineering Geology
- 出版年：2010
- 卷期：18(3)
- 关键词：粘性土 ; cohesive soil ; 渗透性 ; permeability
- 页码：p.351-356
- 图表：illus., 2 tables, 12 refs.
- 分类号：1702
- issnNo：ISSN1004-9665
- isbnNo：CN11-3249/P
摘要
This paper uses the falling head permeability test to measure the permeability of clayey soils directly at various temperatures from 5 to 45℃. The soil samples are made from Nanjing Xiashu soil and silt clay. The results show that the temperature has significant impact on the permeability of the soil specimens. Firstly, the permeability increases upon heating; secondly, as the dry density of the clayey soil increases, the variation of permeability with temperature decreases correspondingly; thirdly, the mixed soil shows greater permeability than either silt clay or Nanjing Xiashu soil, and the silt clay’s permeability is a bit higher than that of Nanjing Xiashu soil within the experimental temperature range from 5 to 45℃. Finally, the mechanism of temperature effects on the permeability of clayey soils is discussed in terms of the viscosity of water, the double layer and micro-meso structure change with temperature.
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