Experimental Study on the Compression and Pore Characteristics of Undisturbed Loess Polluted by Landfill Leachate

摘要：

　　This paper aims to investigate the compression and pore characteristics of underlying stratum in landfill.Batch tests were conducted to measure the compressibility as well as the pore,mineral,and microstructure characteristics of the undisturbed loess polluted by landfill leachate under different concentrations.Results show that the compressibility and compressive deformation of undisturbed soil increased as the landfill leachate concentrations increased.The reduction range of the void ratio was from 22.1%to 30.8%.The leachate pollution caused a decrease in the content of illite and montmorillonite,which reduced by 4.59%and 3.8%,respectively.The NMR signal of undisturbed soil increased as the landfill leachate concentrations increased.The pore radius of the undisturbed soil was mainly distributed in the range of 0.01–1 lm and can be divided into two ranges.The inter-particle pores and intra-aggregate pores mainly existed in undisturbed soil polluted by landfill leachate.Leachate caused an increase in inter-particle pore,whereas a decrease in intra-aggregate pore radius.

关键词： Undisturbed loess Landfill leachate Compressibility Pore

作者: Shicheng Xu Haijun Lu Dinggang Li Jixiang Li Weiwei Wang

作者单位: School of Civil Engineering and Architecture,Wuhan Polytechnic University,Wuhan 430023,China

会议类型: 国际会议

会议名称: The 8th International Congress on Environmental Geotechnics(第八届国际环境土工大会)

会议地点: 杭州

会议语种:英文

页码: 145-153

在线出版日期: 2018-10-28（万方平台首次上网日期，不代表论文的发表时间）