Ezperimental research on geotechnical behaviors of compacted clay influenced by metal cation

摘要：

Considering orthogonal experiment method as design technique method, on the basis of leachate water quality analysis, the author discovers the influence of main kind cation in leachate from MSW landfill on compacted clay geotechnical behaviors, including permeability, strength and plasticity. The researches are as follows: by changing the thickness of diffusion electric double layer and the adsorbability of polar water molecular, density and valence state of metal cation, make soil particles agglomerate or disperse, and result in varying clay plasticity, intensity and permeability. Clay plasticity index increases with low valence state content growing and reduces with high valence state content rising; Permeability coefficient becomes larger with cation valence state increasing in the same cation concentration solutions; whereas, clay shear strength decreases with low valence state content growing, and increases with high valence state ion content rising.

关键词： clay metal cation geotechnical character

作者: Cao Li-wen Zhang Jing Wang Yong Lian Xiu-yan Hong Lei

作者单位: College of Mineral Resource and Earth Science, China University of Mining & Technology, Xuzhou 221116, China

会议类型: 国际会议

会议名称: The 6th International Conference on Mining Science & Technology ICMST 2009(第六届国际矿业科学技术大会)

会议地点: 徐州

会议语种:英文

页码: 1-8

在线出版日期: 2009-10-18（万方平台首次上网日期，不代表论文的发表时间）