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DOI	10.1016/j.coldregions.2012.04.002
	A new structure to control frost boiling and frost heave of embankments in cold regions
	Lai, Yuanming; Zhang, Shimin; Yu, Wenbing
发表日期	2012
ISSN	0165-232X
起始页码	53
结束页码	66
卷号	79-80
英文摘要	Frost boiling and frost heave are the main factors that cause road damage in cold regions. A new kind of embankment structure, which consists of geotextile, crushed-rock layer and geomembrane, was designed and investigated both in the laboratory and at the field of Budongquan located at Qinghai-Tibet Plateau. Comparison tests were conducted at the same time. The key of the new structure is the porous crushed-rock layer which has smaller thermal conductivity with function of drainage and blocking of moisture migration induced by freezing. Both the laboratory and field research results show that the frost penetration and thawing depths of the new structural embankment are much smaller than those of the coarse-grained soil embankment. Also, the new embankment structure has lower water content in the upper layer and smaller frost heave and thawing settlement than the latter does. In addition, it has good drainage effect. Water coming from the road surface can be drained away from the embankment through the porous crushed-rock layer. All these states that the new structure consisting of the porous crushed-rock layer is superior in frost damage mitigation to the normal structure used in cold regions. (C) 2012 Elsevier B.V. All rights reserved.
英文关键词	Embankment in cold regions; Frost penetration; Frost heave; Frost boiling; Crushed-rock layer
语种	英语
WOS研究方向	Engineering ; Geology
WOS类目	Engineering, Environmental ; Engineering, Civil ; Geosciences, Multidisciplinary
WOS关键词	BOUNDARY-CONDITIONS ; PERMAFROST REGIONS ; SILTY SOIL
WOS记录号	WOS:000305201300006
来源期刊	COLD REGIONS SCIENCE AND TECHNOLOGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/239513
作者单位	[Lai, Yuanming; Zhang, Shimin; Yu, Wenbing] Chinese Acad Sci, State Key Lab Frozen Soil Engn, Cold & Arid Reg Environm Res Inst, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Lai, Yuanming,Zhang, Shimin,Yu, Wenbing. A new structure to control frost boiling and frost heave of embankments in cold regions[J],2012,79-80.
APA	Lai, Yuanming,Zhang, Shimin,&Yu, Wenbing.(2012).A new structure to control frost boiling and frost heave of embankments in cold regions.COLD REGIONS SCIENCE AND TECHNOLOGY,79-80.
MLA	Lai, Yuanming,et al."A new structure to control frost boiling and frost heave of embankments in cold regions".COLD REGIONS SCIENCE AND TECHNOLOGY 79-80(2012).