干旱区生态环境知识资源中心(Arid): Analysis of pore relative humidity of salinized unsaturated soil based on Pitzer model

Arid

DOI	10.16285/j.rsm.2019.0647
	Analysis of pore relative humidity of salinized unsaturated soil based on Pitzer model
	Wen Wei; Lai Yuan-ming; You Zhe-min; Li Ji-feng
通讯作者	Wen, W
来源期刊	ROCK AND SOIL MECHANICS
ISSN	1000-7598
出版年	2020
卷号	41 期号:6 页码:1944-1952
英文摘要	In arid and semi-arid regions, salinization caused by high evaporation rate of soil will pose a potential threat to the durability of engineering structures. Therefore, accurate prediction of soil pores relative humidity is of great significance for guiding salt control of engineering structures. Based on the conclusion that the chemical potential of soil pores water is always in equilibrium with pores vapors, a relative humidity expression of unsaturated saline soil pores is deduced according to the principle of chemical equilibrium. By comparing the relative humidity of calculated and the measured solutions, the results can be obtained that the calculated values of relative humidity at different temperatures and concentrations are in good agreement with the experimental values, and are superior to that by the R&S model; the coincidence effect is more obvious especially when the concentration of solute is nearly saturated. Meanwhile, it is found that the numerical results are in good agreement with the experimental results by substituting the proposed relative humidity expression into the existing numerical model without changing the calculation parameters, especially in the prediction of evaporation rate and volume water content. In conclusion, the new formula for calculating pore relative humidity of unsaturated saline soil is effective in the process of water-salt migration calculation.
英文关键词	unsaturated soil salinized soil relative humidity water-salt migration
类型	Article
语种	中文
收录类别	ESCI
WOS记录号	WOS:000566948700016
WOS关键词	SODIUM-CHLORIDE ; AQUEOUS-SOLUTIONS ; ACTIVITY-COEFFICIENTS ; WATER ACTIVITIES ; TEMPERATURE ; EQUILIBRIUM ; EVAPORATION
WOS类目	Engineering, Geological
WOS研究方向	Engineering
Scopus学科分类	Univ Chinese Acad Sci, Beijing 100049, Peoples R China.
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/334580
作者单位	[Wen Wei; Lai Yuan-ming; You Zhe-min] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou 730000, Gansu, Peoples R China; [Wen Wei; Lai Yuan-ming] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Li Ji-feng] Qinghai Water Conservancy & Hydroelect Survey & D, Xining 810008, Qinghai, Peoples R China
推荐引用方式 GB/T 7714	Wen Wei,Lai Yuan-ming,You Zhe-min,et al. Analysis of pore relative humidity of salinized unsaturated soil based on Pitzer model[J],2020,41(6):1944-1952.
APA	Wen Wei,Lai Yuan-ming,You Zhe-min,&Li Ji-feng.(2020).Analysis of pore relative humidity of salinized unsaturated soil based on Pitzer model.ROCK AND SOIL MECHANICS,41(6),1944-1952.
MLA	Wen Wei,et al."Analysis of pore relative humidity of salinized unsaturated soil based on Pitzer model".ROCK AND SOIL MECHANICS 41.6(2020):1944-1952.