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DOI	10.1007/s11440-017-0537-1
	Study on the freezing temperature of saline soil
	Xiao, Zean; Lai, Yuanming; Zhang, Mingyi
发表日期	2018
ISSN	1861-1125
EISSN	1861-1133
起始页码	195
结束页码	205
卷号	13 期号:1
英文摘要	Freezing temperature is an important parameter in studying the freezing mechanism of saline soil. An equation for calculating the freezing temperature is proposed based on the phase transition theory in porous medium, including two main influencing factors, the water activity and pore size. In this equation, the effect of the water activity on the freezing temperature of soil is calculated by Pitzer model, while the impact of pore size is replaced by water content. Through comparing the calculated results with the published experimental data, the equation is proved to be competent in predicting the freezing temperature for the saline soil with sodium chloride or calcium chloride. For the saline soil with sodium carbonate, the effect of salt hydrate crystallization should be taken into consideration. With respect to the saline soil with sodium sulfate, it is difficult to determine the freezing temperature, since there is uncertainty of the resultant when freezing (that is, heptahydrate or decahydrate). In addition, the effects of pore size and multi-component solutes on freezing temperature are also discussed. The study would be helpful for revealing the freezing mechanism and also providing a useful theoretical method for engineering design of saline soil in cold regions.
英文关键词	Freezing temperature; Pore size; Salt content; Water content
语种	英语
WOS研究方向	Engineering
WOS类目	Engineering, Geological
WOS关键词	AQUEOUS-ELECTROLYTE SOLUTIONS ; ACTIVITY-COEFFICIENTS ; 2-IONIC-PARAMETER APPROACH ; ION ACTIVITY ; CRYSTALLIZATION
WOS记录号	WOS:000424028000013
来源期刊	ACTA GEOTECHNICA
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/239473
作者单位	[Xiao, Zean; Lai, Yuanming; Zhang, Mingyi] Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, State Key Lab Frozen Soil Engn, Lanzhou 730000, Gansu, Peoples R China; [Xiao, Zean] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Lai, Yuanming] Lanzhou Jiaotong Univ, Sch Civil Engn, Lanzhou 730070, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Xiao, Zean,Lai, Yuanming,Zhang, Mingyi. Study on the freezing temperature of saline soil[J],2018,13(1).
APA	Xiao, Zean,Lai, Yuanming,&Zhang, Mingyi.(2018).Study on the freezing temperature of saline soil.ACTA GEOTECHNICA,13(1).
MLA	Xiao, Zean,et al."Study on the freezing temperature of saline soil".ACTA GEOTECHNICA 13.1(2018).