A Study on the Impermeability of Composite Clay of Sanitary Landfill in Loess Area

Abstract:

Through the compaction and permeability tests on loess, either natural or compacted loess can meet the requirement of the Landfill Pollution Control Standards about impermeable clay. While the compaction weathered red soil layer of the tertiary, widely distributing under the loess, whose permeability coefficient is less than 1×10-7cm/s. In this study we mixed loess with weathered red soil to obtain a new kind of composite soil, and drew a conclusion that the composite soil can meet the requirements of Chinese national standards. When the clay content of composite soil reached 21%, the permeability coefficients are generally able to meet the requirement.

• Periodical: Applied Mechanics and Materials (Volume 281)
• Pages: 607-614
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.281.607
• Online since: January 2013
• Authors: Jian Feng Gou, Zheng Zhong Zeng, Hao Lei Guo, Hao Wang, Xiao Li Wang, Zhong Ren Nan
• Keywords: Impermeable Composite Clay, Impermeable Liner, Loess, Permeability Coefficient, Sanitary Landfill, Weathered Red Soil

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