Influence of leachate pollution on mechanical properties of compacted clay: A case study on behaviors and mechanisms

doi:10.1016/j.enggeo.2013.10.013

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	Influence of leachate pollution on mechanical properties of compacted clay: A case study on behaviors and mechanisms
	Li, Jiang-shan; Xue, Qiang; Wang, Ping; Liu, Lei
刊名	ENGINEERING GEOLOGY
	2013
卷号	167 页码:128-133
关键词	Leachate Compacted clay Mechanical property Mechanism
ISSN号	0013-7952
DOI	10.1016/j.enggeo.2013.10.013
英文摘要	The environmental safety and engineering stability of landfills are always a concern of the public in view of its potential impact on public health. This study investigates the effect of leachate corrosion on the mechanical properties of a compacted clay. Batch tests were conducted to measure the permeability as well as the compressibility and the shear strength of the compacted clay that was polluted by landfill leachate under different concentrations. The influence mechanisms of leachate on the mechanical properties of compacted clay were investigated through microscopic experiments. The results showed that the hydraulic conductivity of compacted clay decreased because of the reduction in effective porosity resulting from the infiltration of leachate. Moreover, hydraulic conductivity decreased with the increase in leachate concentration and penetration time. The increase in leachate concentration respectively led to a decrease in the cohesion (C) and an increase in the internal friction angle (j) of leachate-polluted compacted clay. The content of quartz and clay minerals in compacted clay decreased while albite increased after pollution. The compressibility of the compacted clay rises with pollution. An increase in compressibility and compressive deformation as well as a reduction in the compression modulus occurred as the leachate concentration increased. The maximum decline of void ratio was 9.7%. (C) 2013 Elsevier B.V. All rights reserved.
WOS研究方向	Engineering ; Geology
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000328239500013
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/3538]
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	Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn
推荐引用方式 GB/T 7714	Li, Jiang-shan,Xue, Qiang,Wang, Ping,et al. Influence of leachate pollution on mechanical properties of compacted clay: A case study on behaviors and mechanisms[J]. ENGINEERING GEOLOGY,2013,167:128-133.
APA	Li, Jiang-shan,Xue, Qiang,Wang, Ping,&Liu, Lei.(2013).Influence of leachate pollution on mechanical properties of compacted clay: A case study on behaviors and mechanisms.ENGINEERING GEOLOGY,167,128-133.
MLA	Li, Jiang-shan,et al."Influence of leachate pollution on mechanical properties of compacted clay: A case study on behaviors and mechanisms".ENGINEERING GEOLOGY 167(2013):128-133.