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DOI	10.1016/j.ijheatmasstransfer.2019.119166
	A generalized model for calculating the thermal conductivity of freezing soils based on soil components and frost heave
	Bi, Jun; Zhang, Mingyi; Lai, Yuanming; Pei, Wansheng; Lu, Jianguo; You, Zhilang; Li, Dongwei
发表日期	2020
ISSN	0017-9310
EISSN	1879-2189
卷号	150
英文摘要	Thermal conductivity of freezing soils is an important parameter for the geotechnical engineering in cold regions. During a freezing process, unfrozen water freezes into ice. It changes soil components and induces frost heave, which will significantly increase the thermal conductivity of freezing soils. This study presents a generalized model for calculating the thermal conductivity of freezing soils with a consideration of soil components and frost heave. The generalized model for freezing soils was developed by different connections (e.g. series connection and parallel connection) between soil pores and solid grain and between unfrozen water and ice in the pores. This model was a function of unfrozen water content, frost heave, porosity, and initial water content The proposed model was verified by measured data of eight silty clay samples with different dry densities and initial water contents. Results show that the calculated thermal conductivities agree well with measured data. (C) 2019 Elsevier Ltd. All rights reserved.
英文关键词	Thermal conductivity; Freezing soils; Generalized model; Stages; Connections
语种	英语
WOS研究方向	Thermodynamics ; Engineering ; Mechanics
WOS类目	Thermodynamics ; Engineering, Mechanical ; Mechanics
WOS关键词	UNFROZEN WATER ; PERMAFROST
WOS记录号	WOS:000518492200046
来源期刊	INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
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/239577
作者单位	[Bi, Jun; Zhang, Mingyi; Lai, Yuanming; Pei, Wansheng; Lu, Jianguo; You, Zhilang] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou 730000, Peoples R China; [Bi, Jun] Lanzhou Univ, Minist Educ China, Key Lab Mech Disaster & Environm Western China, Lanzhou 730000, Peoples R China; [Bi, Jun] Lanzhou Univ, Sch Civil Engn & Mech, Lanzhou 730000, Peoples R China; [Lu, Jianguo; You, Zhilang] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Li, Dongwei] East China Univ Technol, Sch Civil & Struct Engn, Nanchang 330013, Jiangxi, Peoples R China
推荐引用方式 GB/T 7714	Bi, Jun,Zhang, Mingyi,Lai, Yuanming,et al. A generalized model for calculating the thermal conductivity of freezing soils based on soil components and frost heave[J]. 中国科学院西北生态环境资源研究院,2020,150.
APA	Bi, Jun.,Zhang, Mingyi.,Lai, Yuanming.,Pei, Wansheng.,Lu, Jianguo.,...&Li, Dongwei.(2020).A generalized model for calculating the thermal conductivity of freezing soils based on soil components and frost heave.INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER,150.
MLA	Bi, Jun,et al."A generalized model for calculating the thermal conductivity of freezing soils based on soil components and frost heave".INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER 150(2020).