Assessment of Physical Properties of a Granite Residual Soil as an Isolation Barrier

 

Md. Humayun Kabir

Postgraduate Student, Department of Civil & Structural Engineering, University Kebangsaan Malaysia, 43600 UKM, Bangi, Selangor, Malaysia mhkabir2@eng.ukm.my

Mohd Raihan Taha

Associate Professor, Dept of Civil & Structural Engineering, University Kebangsaan Malaysia, 43600 UKM, Bangi, Selangor, Malaysia drmrt@eng.ukm.my

ABSTRACT

 

This study investigates the physical properties of a granite residual soil for its potential use as an isolation barrier for waste materials in subsurface disposal facilities. The results of this investigation show that the soil has hydraulic conductivity lower than the suggested limit (1x10-7 cm/s) of the various waste regulatory agencies. In addition, it has adequate strength for stability, and exhibits small shrinkage potential upon drying. These properties suggest the potential use of the soil as a soil-based isolation barrier for containment of waste materials.

Keywords: residual soil; soil liner; isolation barrier; hydraulic conductivity; volumetric shrinkage strain.

 

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