Coupling effect of landfill leachate and temperature on the microstructure of stabilized clay

doi:10.1007/s10064-017-1099-z

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	Coupling effect of landfill leachate and temperature on the microstructure of stabilized clay
	Hou, Juan ; Li, Jiazheng ; Chen, Yijun
	2019
发表期刊	BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
ISSN	1435-9529
卷号	78 期号:1 页码:629-640
摘要	This paper studies the microstructure of stabilized clay polluted by landfill leachate at different temperatures. For this purpose, dynamic corrosion-stabilized clay was used to prepare mercury intrusion porosimetry and scanning electron microscopy samples by lyophilization. The results showed that a rise in temperature affects the pore structure of corrosion-stabilized clay. Macropores are easily produced when the temperature ranges from 40 to 60 degrees C, while cryptopores and ultramicropores appear in significant numbers if the temperature reaches 80 degrees C. The corresponding micrographs show a dispersed structure at temperatures of 40 to 60 degrees C and a clearly flower-like structure at 80 degrees C. Landfill leachate has obvious effects on the microstructure of stabilized clay. After corrosion processes, pore size is reduced while average pore radius is increased. Macropores increase and span a wider range. The peak of the pore size distribution curve shifts from the middle to both ends; porosity initially decreases and then increases. From the chemical point of view, this corrosion mechanism is mainly due to the growth of new material such as calcium chloro-aluminates, ettringite or dihydrate gypsum that were generated by the reaction between landfill leachate and stabilized clay.
关键词	Landfill leachate Stabilized clay Dynamic corrosion Microstructure Pore size distribution
DOI	10.1007/s10064-017-1099-z
收录类别	SCI
语种	英语
WOS研究方向	Engineering ; Geology
WOS类目	Engineering, Environmental ; Engineering, Geological ; Geosciences, Multidisciplinary
WOS记录号	WOS:000458214600042
引用统计	被引频次：8[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://119.78.100.198/handle/2S6PX9GI/15052
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	1.Shanghai Univ, Dept Civil Engn, Shanghai 200444, Peoples R China; 2.Shanghai Univ, Mech Dept, Coll Sci, Shanghai 200444, Peoples R China; 3.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China
推荐引用方式 GB/T 7714	Hou, Juan,Li, Jiazheng,Chen, Yijun. Coupling effect of landfill leachate and temperature on the microstructure of stabilized clay[J]. BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,2019,78(1):629-640.
APA	Hou, Juan,Li, Jiazheng,&Chen, Yijun.(2019).Coupling effect of landfill leachate and temperature on the microstructure of stabilized clay.BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,78(1),629-640.
MLA	Hou, Juan,et al."Coupling effect of landfill leachate and temperature on the microstructure of stabilized clay".BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT 78.1(2019):629-640.

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