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DOI	10.1029/2018WR023221
	Application of the Generalized Clapeyron Equation to Freezing Point Depression and Unfrozen Water Content
	Zhou, Jiazuo; Wei, Changfu; Lai, Yuanming; Wei, Houzhen; Tian, Huihui
发表日期	2018
ISSN	0043-1397
EISSN	1944-7973
起始页码	9412
结束页码	9431
卷号	54 期号:11
英文摘要	Freezing point and unfrozen water content are key parameters in modeling the heat and mass transfer under the cyclic change of atmosphere temperature. It is theoretically revealed the relation between the measured pore pressure and true pore pressure with physicochemical interactions. A new generalized Clapeyron equation is derived, which addresses the relationship among the measured pore water, ice-liquid capillary pressure, and pore solution concentration for the frozen soil. The generalized Clapeyron equation is applied to derive the expressions for the freezing point and unfrozen water content in frozen soils at various thermodynamical conditions. The freezing point of soil is calculated and compared with the experimental results, showing that the freezing point depression becomes more pronounced as water content decreases and solution concentration increases. It is also shown that the NaCl solution with relatively high concentration in soil pore approximates the ideal dilute solution while Na2CO3 and some other solutions in soil are significantly different than the ideal dilute solution. Upon assuming the unfrozen water content is only determined by the capillary pressure, the Clapeyron equation links the soil water characteristic curve into the soil freezing characteristic curve. The unfrozen water content in the saline frozen soil and the frozen soil under overburden pressure is also calculated according to the expression derived from the generalized Clapeyron equation.
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources
WOS类目	Environmental Sciences ; Limnology ; Water Resources
WOS关键词	FROST HEAVE ; FROZEN ; SOIL ; ICE ; MODEL ; TRANSPORT ; EQUILIBRIUM ; SIMILARITY ; PERMAFROST ; PRESSURE
WOS记录号	WOS:000453369400047
来源期刊	WATER RESOURCES RESEARCH
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/239462
作者单位	[Zhou, Jiazuo; Wei, Changfu; Wei, Houzhen; Tian, Huihui] Chinese Acad Sci, State Key Lab Geomech & Geotech Engn, Inst Rock & Soil Mech, Wuhan, Hubei, Peoples R China; [Lai, Yuanming] Chinese Acad Sci, State Key Lab Frozen Soil Engn, Northwest Inst Ecoenvironm & Resources, Lanzhou, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Zhou, Jiazuo,Wei, Changfu,Lai, Yuanming,et al. Application of the Generalized Clapeyron Equation to Freezing Point Depression and Unfrozen Water Content[J],2018,54(11).
APA	Zhou, Jiazuo,Wei, Changfu,Lai, Yuanming,Wei, Houzhen,&Tian, Huihui.(2018).Application of the Generalized Clapeyron Equation to Freezing Point Depression and Unfrozen Water Content.WATER RESOURCES RESEARCH,54(11).
MLA	Zhou, Jiazuo,et al."Application of the Generalized Clapeyron Equation to Freezing Point Depression and Unfrozen Water Content".WATER RESOURCES RESEARCH 54.11(2018).