- 责任者：Shao Yuxian (School of Earth Sciences and Engineering ; Nanjing University ; Nanjing 210093 ; China) ; Shi Bin
- 刊名：Journal of Engineering Geology
- 出版年：2011
- 卷期：19(1)
- 关键词：非饱和土 ; unsaturated soil ; 粘性土 ; cohesive soil ; 抗剪强度 ; shear strength
- 页码：p.137-142
- 图表：4 illus., 3 tables, 19 refs.
- 分类号：1702
- issnNo：ISSN1004-9665
- isbnNo：CN11-3249/P
In order to systematically study the temperature effect on the engineering properties of clayey soils, laboratory test was conducted to evaluate the relations between temperature and shear strength of unsaturated remodeling soil samples. The results indicate that the following: 1) the cohesive force change mainly and linearly with the temperature; 2) the shear strength of clayey soils with higher content of hydrophilic mineral is more sensitive to temperature change; 3) the cohesive force decrease with the temperature rise, showing thermal-softening on strength; and 4) for clayey soils with lower content of hydrophilic mineral, when the moisture content is lower (w≤17%), the shear strength shows the thermo-hardening phenomenon, however it shows the thermal-softening phenomenon when the moisture content is higher (w≥22%), and the temperature effect on shear strength is more obvious when the dry density of sample is higher.