Determination of Soil-Shrinkage Curve Using Transient Water Evaporation Method

doi:10.1061/(ASCE)GM.1943-5622.0001993

	Determination of Soil-Shrinkage Curve Using Transient Water Evaporation Method
	Dong, Yi 1; Wang, Lun 1,2
刊名	INTERNATIONAL JOURNAL OF GEOMECHANICS
	2021-05-01
卷号	21 期号:5 页码:8
关键词	Unsaturated soils Soil-shrinkage curve Soil water retention Transient drying Soil water evaporation Relative humidity Shrinkage geometry factor
ISSN号	1532-3641
DOI	10.1061/(ASCE)GM.1943-5622.0001993
英文摘要	Soil-shrinkage curve (SSC) is an intrinsic constitutive relationship characterizing soil deformation due to variation of water content under drying. The determination of SSC has been challenging due to the difficulty of accurate measurement of volume change and the access of a broad range of water content. In this study, SSCs of three different types of soils are measured successfully by image process on photos of soil cake samples under multiple steps of drying in a humidity-controlled environmental chamber. The development of volumetric, radial, and vertical strain, and the geometry factor of the deformation are analyzed to validate homogeneous shrinkage during the entire drying process. The soil deformation is analyzed on the effect of transient drying and its dependency on water content. The sensitivity of mechanical and hydraulic properties of soil responding to time concludes that the equilibrium is not a necessity for the mechanical property measurement such as SSC. This feature implies that a transient drying process can be implemented to significantly shorten the time duration for measurement of soil shrinkage without an equilibrium condition in soil desiccation.
资助项目	National Natural Science Foundation of China[NSFC-51779254] ; National Natural Science Foundation of China[41572293]
WOS研究方向	Engineering
语种	英语
出版者	ASCE-AMER SOC CIVIL ENGINEERS
WOS记录号	WOS:000651759900021
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/27092]
专题	中科院武汉岩土力学所
通讯作者	Dong, Yi
作者单位	1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Dong, Yi,Wang, Lun. Determination of Soil-Shrinkage Curve Using Transient Water Evaporation Method[J]. INTERNATIONAL JOURNAL OF GEOMECHANICS,2021,21(5):8.
APA	Dong, Yi,&Wang, Lun.(2021).Determination of Soil-Shrinkage Curve Using Transient Water Evaporation Method.INTERNATIONAL JOURNAL OF GEOMECHANICS,21(5),8.
MLA	Dong, Yi,et al."Determination of Soil-Shrinkage Curve Using Transient Water Evaporation Method".INTERNATIONAL JOURNAL OF GEOMECHANICS 21.5(2021):8.