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Low Permeability Liners Incorporating Fly Ash

by Mumtaz A. Usmen, West Virginia Univ, Morgantown, WV, USA,
John J. Bowders, Jr., West Virginia Univ, Morgantown, WV, USA,
James S. Gidley, West Virginia Univ, Morgantown, WV, USA,



Document Type: Proceeding Paper

Part of: Disposal and Utilization of Electric Utility Wastes

Abstract:

This paper summarizes the results of a research study undertaken at West Virginia University to evaluate the feasibility of utilizing stabilized fly ash as a low permeability liner material. Two class F fly ashes from West Virginia were stabilized with varying percentages of lime or cement, and were tested for physical properties, strength and durability, hydraulic conductivity and leachate characteristics. The strength and durability were found to be adequate and better in cement stabilization than lime. Hydraulic conductivities were low but not less than 10** minus **7 cm/s. The addition of bentonite lowered the hydraulic conductivity to desired level.

Subject Headings: Linings | Hydraulic conductivity | Fly ash | Permeability (material) | Lime | Cement | Strength of materials | West Virginia

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