Comprehensive review of geosynthetic clay liner and compacted clay liner

14th International Conference on Science, Engineering and Technology

自然科学;工业技术

Uma Shankar, M.^1 ; Muthukumar, M.^1

School of Civil and Chemical Engineering, VIT University, Vellore

Tamil Nadu

632014, India^1

关键词: Compacted clay liner;    Decomposition process;    Environmental safety;    Geosynthetic clay liners;    Geotechnical characteristics;    Groundwater contamination;    Leachate migration;    Methods of disposals;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/263/3/032026/pdf
DOI  :  10.1088/1757-899X/263/3/032026

来源: IOP

【 摘 要 】

Human activity inevitably produces waste materials that must be managed. Some waste can be reused. However many wastes that cannot be used beneficially must be disposed of ensuring environmental safety. One of the common methods of disposal is landfilling. The most common problems of the landfill site are environmental degradation and groundwater contamination caused by leachate produced during the decomposition process of organic material and rainfall. Liner in a landfill is an important component which prevent leachate migration and prevent groundwater contamination. Earthen liners have been widely used to contain waste materials in landfill. Liners and covers for municipal and hazardous waste containment facilities are often constructed with the use of fine-grained, low plasticity soils. Because of low permeability geosynthetic clay liners and compacted clay liners are the main materials used in waste disposal landfills. This paper summaries the important geotechnical characteristics such as hydraulic conductivity, liquid limit and free swell index of geosynthetic clay liner and compacted clay liner based on research findings. This paper also compares geosynthetic clay liner and compacted clay liner based on certain criteria such as thickness, availability of materials, vulnerability to damage etc.