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DOI	10.1002/ppp.2077
	Method for calculating the liquid water fraction of saline soil during the freezing process
	Xiao, Zean; Lai, Yuanming; Zhang, Jun
发表日期	2021
ISSN	1045-6740
EISSN	1099-1530
起始页码	92
结束页码	101
卷号	32 期号:1
英文摘要	The liquid water fraction is one of the most important parameters in the study of saline soils of cold regions, and has great influence on water migration. The freezing temperature and saturated concentration of pore solutions have been investigated according to thermodynamic theory, indicating that pore radius, temperature, and salt concentration are the three main influencing factors. Here, a method for calculating the liquid water fraction of saline soil is proposed, in which the liquid water fraction of saline soil can be calculated for different water contents and initial salt concentrations according to the pore size distribution. Comparison of the experimental data with the results of the model shows that the model provides reasonable calculations for the unfrozen water content of saline frozen soils, and both the first and the second phase transition can be modeled well. Considering the solubility of salt, the amount of salt crystallization and ice formation during cooling can also be obtained. The proposed method can be used to distinguish the proportion of salt expansion and frost heave, and also provide a novel approach for calculating the matric suction of saline soil during the freezing process.
英文关键词	frost heave; phase transition; saline soil; salt expansion; unfrozen water content
语种	英语
WOS研究方向	Physical Geography ; Geology
WOS类目	Geography, Physical ; Geology
WOS关键词	UNFROZEN WATER ; POROUS MATERIALS ; CRYSTALLIZATION ; STRESS ; ICE
WOS记录号	WOS:000547167400001
来源期刊	PERMAFROST AND PERIGLACIAL PROCESSES
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/239567
作者单位	[Xiao, Zean] Taiyuan Univ Technol, Coll Civil Engn, Taiyuan, Shanxi, Peoples R China; [Xiao, Zean] Taiyuan Univ Technol, Inst Min Technol, Taiyuan, Shanxi, Peoples R China; [Xiao, Zean; Zhang, Jun] Shanxi Transportat Res Inst Grp Co Ltd, Key Lab Highway Construct & Maintenance Technol L, Taiyuan, Shanxi, Peoples R China; [Lai, Yuanming] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou, Peoples R China
推荐引用方式 GB/T 7714	Xiao, Zean,Lai, Yuanming,Zhang, Jun. Method for calculating the liquid water fraction of saline soil during the freezing process[J],2021,32(1).
APA	Xiao, Zean,Lai, Yuanming,&Zhang, Jun.(2021).Method for calculating the liquid water fraction of saline soil during the freezing process.PERMAFROST AND PERIGLACIAL PROCESSES,32(1).
MLA	Xiao, Zean,et al."Method for calculating the liquid water fraction of saline soil during the freezing process".PERMAFROST AND PERIGLACIAL PROCESSES 32.1(2021).