Study on influence of freeze-thaw cycles on the physical-mechanical properties of loess

doi:10.4028/www.scientific.net/AMR.442.286

IR > 土木工程学院

	Study on influence of freeze-thaw cycles on the physical-mechanical properties of loess
	Bi, Guiquan1,2
	2012
会议名称	2011 International Conference on Smart Materials and Intelligent Systems, SMIS 2011
会议录名称	Advanced Materials Research
卷号	442
页码	286-290
会议日期	December 23, 2011 - December 25, 2011
会议地点	Chongqing, China
出版者	Trans Tech Publications, P.O. Box 1254, Clausthal-Zellerfeld, D-38670, Germany
摘要	Loess foundations in seasonally frozen soil region are subject to severe effect of freeze-thaw cycles. This often results in water redistribution and structure weakening. So it is very important to study the physical-mechanical properties of loess under freeze-thaw cycles. In this paper, systematic study was carried out using freeze-thaw cycle machine. The impacts of freeze-thaw cycles on the physical-mechanical properties of loess including deformation, water distribution and dry density under the condition of filling water to loess samples were investigated. The results proved that the freeze-thaw cycles can increase the water content gradually from the bottom to the top in the loess samples under water supplied condition. The water content gradient reaches maximum at the freeze-thaw interface. The loess samples deform sharply at the early stage of the freeze-thaw cycles and then reach a stable status. The freeze-thaw cycles decrease the dry density of the loess samples gradually. The dry density at the top is lower than that at the bottom, due to more severe freeze-thaw effect at the top of the samples. © (2012) Trans Tech Publications, Switzerland.
关键词	Density (specific gravity) Frozen soils Intelligent materials Intelligent systems Water supply systems Dry density Freeze-thaw cycles Loess Physical-mechanical properties Water redistribution
DOI	10.4028/www.scientific.net/AMR.442.286
收录类别	EI
语种	英语
EI入藏号	20120914822112
EI主题词	Thawing
ISSN	10226680
来源库	Compendex
分类代码	446.1 Water Supply Systems - 483.1 Soils and Soil Mechanics - 723.4 Artificial Intelligence - 822.2 Food Processing Operations - 931.2 Physical Properties of Gases, Liquids and Solids
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	会议论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/116408
专题	土木工程学院能源与动力工程学院新能源学院
作者单位	1.State Key Laboratory of Frozen Soil Engineering, CAREERI, CAS, Lanzhou 730000, China; 2.School of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou 730000, China
第一作者单位	新能源学院
推荐引用方式 GB/T 7714	Bi, Guiquan. Study on influence of freeze-thaw cycles on the physical-mechanical properties of loess[C]:Trans Tech Publications, P.O. Box 1254, Clausthal-Zellerfeld, D-38670, Germany,2012:286-290.