Laboratory tests on pore water pressures in soils subjected to cyclic freeze-thaw under different loads

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	Laboratory tests on pore water pressures in soils subjected to cyclic freeze-thaw under different loads
	Huang, Yongting 1,2; Ma, Wei 1,2; He, Pengfei1,3 ; Li, Xiaolin 1,2,4
	2022-07-01
发表期刊	Zhongguo Kuangye Daxue Xuebao/Journal of China University of Mining and Technology
ISSN	1000-1964
卷号	51 期号:4 页码:632-641
摘要	A series of laboratory tests were carried out to study the variations in pore water pressure and deformation development law in soil samples under the combined action of periodic temperature boundary and overburden load. The results show that variations in pore water pressure of the soil samples are affected by the temperature, loads, and freeze-thaw periods. During the thawing, pore water pressure increases sharply and then begin to dissipate. During the freezing, pore water pressure increases first and then decreases. The greater the load applied, the greater the variations in the pore water pressure. Under temperature boundary condition with the freeze-thaw period is 8 h, the average variations in pore water pressure at 77 mm of the soil samples height increase from 13. 4 kPa to 46. 0 kPa with the load applied increases from 50 kPa to 150 kPa. The greater the freeze-thaw period, the greater the variation in pore water pressure. The variation tendencies in vertical deformation of soil samples show a ladder-like pattern under the combination periodical temperature boundary and load applied, and its magnitude is mainly determined by the loads applied. The freeze-thaw cycle have little effect on the final vertical deformation of the soil sample when the load applied is the same. When the load applied is 100 kPa, the final vertical deformations of soil samples under the temperature boundary conditions of freeze-thaw cycles of 4 h and 8 h are 10. 5 mm and 11. 2 mm, respectively. © 2022, Editorial Board of Journal of CUMT. All right reserved.
关键词	Deformation Freezing Pore pressure Pressure distribution Soil surveys Soils Thawing Water Freeze-thaw period Freeze/thaw Laboratory test Load Pore-water pressures Pressure increase Soil sample Temperature boundary Temperature loads Vertical deformation
收录类别	EI
语种	中文
出版者	China University of Mining and Technology
EI入藏号	20222812344661
EI主题词	Boundary conditions
EI分类号	483.1 Soils and Soil Mechanics - 931.1 Mechanics
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/159410
专题	理学院
作者单位	1.State Key Laboratory of Frozen Soil Engineering, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou; 730000, China; 2.School of Engineering Science, University of Chinese Academy of Science, Beijing; 100049, China; 3.School of Science, Lanzhou University of Technology, Lanzhou; 730050, China; 4.College of Civil Engineering and Architecture, Jiaxing University, Jiaxing; 314001, China
推荐引用方式 GB/T 7714	Huang, Yongting,Ma, Wei,He, Pengfei,et al. Laboratory tests on pore water pressures in soils subjected to cyclic freeze-thaw under different loads[J]. Zhongguo Kuangye Daxue Xuebao/Journal of China University of Mining and Technology,2022,51(4):632-641.
APA	Huang, Yongting,Ma, Wei,He, Pengfei,&Li, Xiaolin.(2022).Laboratory tests on pore water pressures in soils subjected to cyclic freeze-thaw under different loads.Zhongguo Kuangye Daxue Xuebao/Journal of China University of Mining and Technology,51(4),632-641.
MLA	Huang, Yongting,et al."Laboratory tests on pore water pressures in soils subjected to cyclic freeze-thaw under different loads".Zhongguo Kuangye Daxue Xuebao/Journal of China University of Mining and Technology 51.4(2022):632-641.