Soil Freezing and Soil Water Retention Characteristics: Connection and Solute Effects

doi:10.1061/(ASCE)CF.1943-5509.0000851

CORC > 武汉岩土力学研究所 > 中科院武汉岩土力学所 > 岩土力学所知识全产出 > 期刊论文

	Soil Freezing and Soil Water Retention Characteristics: Connection and Solute Effects
	Ma, Tiantian 1; Wei, Changfu 1,2; Xia, Xiaolong 1; Zhou, Jiazuo 1; Chen, Pan 1
刊名	JOURNAL OF PERFORMANCE OF CONSTRUCTED FACILITIES
	2017
卷号	31 期号:1 页码:-
关键词	Soil-water characteristic curve Soil freezing characteristic curve Matric potential Osmotic potential Nuclear magnetic resonance (NMR)
ISSN号	0887-3828
DOI	10.1061/(ASCE)CF.1943-5509.0000851
英文摘要	The relation between the soil-water characteristic curve (SWCC) and the soil freezing characteristic curve (SFCC) is investigated based on the similarity between the freezing/thawing and drying/wetting behaviors of soils. The SWCCs of clay and silt are obtained by the pressure plate extractor and vapor pressure method, while the SFCCs are determined from the unfrozen water content measurement using the nuclear magnetic resonance (NMR) and temperature measurement. The pore water potential of the frozen soil is derived from a generalized Clapeyron equation, which addresses the effects of capillarity, sorption, and osmosis, and compared to that of unsaturated soils. Our experimental results show that at low water content the matric potential in the soil saturated with pore water and pore ice is generally different from that in the soil saturated with pore water and pore gas. A series of experiments on the soil samples saturated by NaCl solutions of different concentrations were performed to determine the osmotic potential and the water retention characteristics. Based on the principles of surface chemistry, a relationship between the adsorptive forces and the water film thickness is developed, which is capable of describing the soil water characteristic when the sorption effect is significant. Our results indicate that the freezing-point depression method should be applied with caution in determining the soil water retention characteristics of unsaturated soils at lower water content. (C) 2015 American Society of Civil Engineers.
WOS研究方向	Construction & Building Technology ; Engineering
语种	英语
出版者	ASCE-AMER SOC CIVIL ENGINEERS
WOS记录号	WOS:000394243700001
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/4009]
专题	岩土力学所知识全产出_期刊论文国家重点实验室知识产出_期刊论文
作者单位	1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn ; 2.Guilin Univ Technol, Coll Civil & Architectural Engn
推荐引用方式 GB/T 7714	Ma, Tiantian,Wei, Changfu,Xia, Xiaolong,et al. Soil Freezing and Soil Water Retention Characteristics: Connection and Solute Effects[J]. JOURNAL OF PERFORMANCE OF CONSTRUCTED FACILITIES,2017,31(1):-.
APA	Ma, Tiantian,Wei, Changfu,Xia, Xiaolong,Zhou, Jiazuo,&Chen, Pan.(2017).Soil Freezing and Soil Water Retention Characteristics: Connection and Solute Effects.JOURNAL OF PERFORMANCE OF CONSTRUCTED FACILITIES,31(1),-.
MLA	Ma, Tiantian,et al."Soil Freezing and Soil Water Retention Characteristics: Connection and Solute Effects".JOURNAL OF PERFORMANCE OF CONSTRUCTED FACILITIES 31.1(2017):-.