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DOI	10.1016/j.cis.2021.102465
	Spatial state distribution and phase transition of non-uniform water in soils: Implications for engineering and environmental sciences
	Zhang, Lianhai; Zhuang, Qianlai; Wen, Zhi; Zhang, Peng; Ma, Wei; Wu, Qingbai; Yun, Hanbo
发表日期	2021
ISSN	0001-8686
EISSN	1873-3727
卷号	294
英文摘要	The physical behaviors of water in the interface are the fundamental to discovering the engineering properties and environmental effects of aqueous porous media (e.g., soils). The pore water pressure (PWP) is a key parameter to characterize the pore water state (PWS) and its phase transition in the micro interface. Traditionally, the water in the interface is frequently believed to be uniform, negative in pressure and tensile based on macroscopic tests and Gibbs interface model. However, the water in the interface is a non-uniform and compressible fluid (part of tensile and part of compressed), forming a spatial profile of density and PWP depending on its distance from the substrate interface. Herein, we introduced the static and dynamic theory methods of non-uniform water based on diffuse interface model to analyze non-uniform water state dynamics and water density and PWP. Based on the theory of non-uniform water, we gave a clear stress analysis on soil water and developed the concepts of PWS, PWP and matric potential in classical soil mechanics. In addition, the phase transition theory of non-uniform water is also examined. In nature, the generalized Clausius-Clapeyron equation (GCCE) is consistent with Clapeyron equation. Therefore, a unified interpretation is proposed to justify the use of GCCE to represent frozen soil water dynamics. Furthermore, the PWP description of non-uniform water can be well verified by some experiments focusing on property variations in the interface area, including the spatial water density profile and unfrozen water content variations with decreasing temperature and other factors. In turn, PWP spatial distribution of non-uniform water and its states can well explain some key phenomena on phase transition during ice or hydrate formation, including the discrepancies of phase transition under a wide range of conditions
英文关键词	Non-uniform water; GCCE; Matric potential; Hydrate formation; Phase transition; Diffuse interface model
语种	英语
WOS研究方向	Chemistry
WOS类目	Chemistry, Physical
WOS关键词	GAS-HYDRATE PHASE ; DENSITY ; ICE ; PRESSURES ; INTERFACE ; SYSTEM ; MODEL ; CLAY
WOS记录号	WOS:000685473700015
来源期刊	ADVANCES IN COLLOID AND INTERFACE SCIENCE
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/240309
作者单位	[Zhang, Lianhai; Wen, Zhi; Zhang, Peng; Ma, Wei; Wu, Qingbai; Yun, Hanbo] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Beilu He Observat & Res Stn Tibetan Plateau, Lanzhou 730000, Peoples R China; [Zhang, Lianhai; Zhuang, Qianlai; Yun, Hanbo] Purdue Univ, Dept Earth Atmospher & Planetary Sci, W Lafayette, IN 47907 USA; [Zhang, Lianhai; Wen, Zhi] State Key Lab Frozen Soil Engn & Suzhou Niumag An, Dept Joint NMR Lab Freeze Thaw Proc, Lanzhou 730000, Peoples R China; [Yun, Hanbo] Univ Copenhagen, Ctr Permafrost CENPERM, DK-1350 Copenhagen, Denmark
推荐引用方式 GB/T 7714	Zhang, Lianhai,Zhuang, Qianlai,Wen, Zhi,et al. Spatial state distribution and phase transition of non-uniform water in soils: Implications for engineering and environmental sciences[J]. 中国科学院西北生态环境资源研究院,2021,294.
APA	Zhang, Lianhai.,Zhuang, Qianlai.,Wen, Zhi.,Zhang, Peng.,Ma, Wei.,...&Yun, Hanbo.(2021).Spatial state distribution and phase transition of non-uniform water in soils: Implications for engineering and environmental sciences.ADVANCES IN COLLOID AND INTERFACE SCIENCE,294.
MLA	Zhang, Lianhai,et al."Spatial state distribution and phase transition of non-uniform water in soils: Implications for engineering and environmental sciences".ADVANCES IN COLLOID AND INTERFACE SCIENCE 294(2021).