Experimental Study on the Freezing Temperatures of Saline Silty Soils

doi:10.1002/ppp.1837

	Experimental Study on the Freezing Temperatures of Saline Silty Soils
	Wan, XS; Lai, YM; Wang, C; Lai, YM (reprint author), Chinese Acad Sci, State Key Lab Frozen Soil Engn, Cold & Arid Reg Environm & Engn Inst, Lanzhou 730000, Gansu, Peoples R China.
刊名	PERMAFROST AND PERIGLACIAL PROCESSES
	2015-04
卷号	26 期号:2 页码:175-187
关键词	sulfate saline soil freezing temperature water activity surface free energy Qinghai-Tibet Plateau
ISSN号	1045-6740
DOI	10.1002/ppp.1837
文献子类	Article
英文摘要	The freezing temperature of soil is an important index to judge whether it is in a frozen state or not, and plays a key role in distinguishing salt expansion from frost heave. Freezing experiments on sulfate saline soil and its ion solution indicate that the initial freezing temperature of the soil is mainly determined by the properties of the ion solution. The effects of saline soil types and saline solution concentrations on the freezing temperature are also investigated. An equation to calculate the freezing temperature of the sulfate salt solution is deduced from the Pitzer ion model and its validity is verified by the experimental results. Under the assumption that the soil freezing temperature is determined by the freezing temperature of the corresponding ion solution and the energy of the ice-liquid interface, a precise relation between the soil freezing temperature and the radius of the ice-liquid interface is obtained and a general equation to determine the freezing temperature of the silty clay of the Qinghai-Tibet Plateau is proposed. Copyright (c) 2015 John Wiley & Sons, Ltd.
学科主题	Physical Geography ; Geology
出版地	HOBOKEN
资助项目	国家自然科学基金项目 ; 国家重点基础研究发展计划以及国家重大科学研究计划（973计划）
项目编号	National Natural Science Foundation of China [41230630] ; Western Project Program of the Chinese Academy of Sciences [KZCX2-XB3-19] ; National Key Basic Research Program of China (973 Program) [2012CB026102] ; State Key Laboratory of Frozen Soil Engineering [SKLFSE-ZY-03]
语种	英语
WOS记录号	WOS:000355864700006
资助机构	NSFC ; MOST
内容类型	期刊论文
源URL	[http://ir.lzu.edu.cn/handle/262010/182426]
专题	土木工程与力学学院_期刊论文
通讯作者	Lai, YM (reprint author), Chinese Acad Sci, State Key Lab Frozen Soil Engn, Cold & Arid Reg Environm & Engn Inst, Lanzhou 730000, Gansu, Peoples R China.
推荐引用方式 GB/T 7714	Wan, XS,Lai, YM,Wang, C,et al. Experimental Study on the Freezing Temperatures of Saline Silty Soils[J]. PERMAFROST AND PERIGLACIAL PROCESSES,2015,26(2):175-187.
APA	Wan, XS,Lai, YM,Wang, C,&Lai, YM .(2015).Experimental Study on the Freezing Temperatures of Saline Silty Soils.PERMAFROST AND PERIGLACIAL PROCESSES,26(2),175-187.
MLA	Wan, XS,et al."Experimental Study on the Freezing Temperatures of Saline Silty Soils".PERMAFROST AND PERIGLACIAL PROCESSES 26.2(2015):175-187.