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DOI	10.1016/j.coldregions.2020.103011
	A thermodynamic model for calculating the unfrozen water content of frozen soil
	Xiao, Zean; Lai, Yuanming; Zhang, Jun
发表日期	2020
ISSN	0165-232X
EISSN	1872-7441
卷号	172
英文摘要	On the basis of thermodynamic principles, the relationship between freezing temperature depression and pore radius of soil has been derived. Combined with the soil pore size distribution, this paper proposes a thermodynamic model for calculating unfrozen water content, and investigates the effects of pore radius, nonfreezable layer, and pore shape on unfrozen water content. Comparison of calculated results with the experimental data shows that the model provides a reasonable approximation for calculating the unfrozen water content of frozen soil. Moreover, the mechanism of unfrozen water content change for different soil types, initial water contents can be well explained. The study not only establish a relationship between the unfrozen water content and pore size distributions of soils, but also provide a thermodynamic reference to understand the mechanism of phase transitions in frozen soils.
英文关键词	Unfrozen water content; Nonfreezable layer; Pore size distribution; Pore radius
语种	英语
WOS研究方向	Engineering ; Geology
WOS类目	Engineering, Environmental ; Engineering, Civil ; Geosciences, Multidisciplinary
WOS关键词	ICE
WOS记录号	WOS:000519301800002
来源期刊	COLD REGIONS SCIENCE AND TECHNOLOGY
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/239576
作者单位	[Xiao, Zean] Taiyuan Univ Technol, Coll Civil Engn, Taiyuan 030024, Shanxi, Peoples R China; [Xiao, Zean] Taiyuan Univ Technol, Inst Min Technol, Taiyuan 030024, Shanxi, Peoples R China; [Xiao, Zean; Zhang, Jun] Shanxi Transportat Res Inst, Key Lab Highway Construct & Maintenance Technol L, Taiyuan 030006, Shanxi, Peoples R China; [Lai, Yuanming] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Xiao, Zean,Lai, Yuanming,Zhang, Jun. A thermodynamic model for calculating the unfrozen water content of frozen soil[J]. 中国科学院西北生态环境资源研究院,2020,172.
APA	Xiao, Zean,Lai, Yuanming,&Zhang, Jun.(2020).A thermodynamic model for calculating the unfrozen water content of frozen soil.COLD REGIONS SCIENCE AND TECHNOLOGY,172.
MLA	Xiao, Zean,et al."A thermodynamic model for calculating the unfrozen water content of frozen soil".COLD REGIONS SCIENCE AND TECHNOLOGY 172(2020).