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Accurate control testing for clay liner permeability

Technical Report:

Abstract

Two series of centrifuge tests were carried out to evaluate the use of centrifuge modelling as a method of accurate control testing of clay liner permeability. The first series used a large 3 m radius geotechnical centrifuge and the second series a small 0.5 m radius machine built specifically for research on clay liners. Two permeability cells were fabricated in order to provide direct data comparisons between the two methods of permeability testing. In both cases, the centrifuge method proved to be effective and efficient, and was found to be free of both the technical difficulties and leakage risks normally associated with laboratory permeability testing of fine grained soils. Two materials were tested, a consolidated kaolin clay having an average permeability coefficient of 1.2{times}10{sup -9} m/s and a compacted illite clay having a permeability coefficient of 2.0{times}10{sup -11} m/s. Four additional tests were carried out to demonstrate that the 0.5 m radius centrifuge could be used for linear performance modelling to evaluate factors such as volumetric water content, compaction method and density, leachate compatibility and other construction effects on liner leakage. The main advantages of centrifuge testing of clay liners are rapid and accurate evaluation of hydraulic properties and realistic  More>>
Authors:
Publication Date:
Aug 01, 1991
Product Type:
Technical Report
Report Number:
QU-1655; CE-04136
Reference Number:
CANM-92-002676; EDB-92-051677
Subject:
54 ENVIRONMENTAL SCIENCES; CLAYS; PERMEABILITY; LINERS; TESTING; SANITARY LANDFILLS; CENTRIFUGES; CONCENTRATORS; MANAGEMENT; WASTE DISPOSAL; WASTE MANAGEMENT; 540220* - Environment, Terrestrial- Chemicals Monitoring & Transport- (1990-)
OSTI ID:
5828885
Research Organizations:
Queen's Univ., Kingston, ON (Canada)
Country of Origin:
Canada
Language:
English
Other Identifying Numbers:
Other: ISBN: 0-7729-8676-2
Availability:
Ontario Ministry of the Environment, Public Information Centre, 135 St. Clair Ave. West, Toronto, ON, CAN M4V 1P5.
Submitting Site:
CANM
Size:
Pages: (57 p)
Announcement Date:

Technical Report:

Citation Formats

Mitchell, R J. Accurate control testing for clay liner permeability. Canada: N. p., 1991. Web.
Mitchell, R J. Accurate control testing for clay liner permeability. Canada.
Mitchell, R J. 1991. "Accurate control testing for clay liner permeability." Canada.
@misc{etde_5828885,
title = {Accurate control testing for clay liner permeability}
author = {Mitchell, R J}
abstractNote = {Two series of centrifuge tests were carried out to evaluate the use of centrifuge modelling as a method of accurate control testing of clay liner permeability. The first series used a large 3 m radius geotechnical centrifuge and the second series a small 0.5 m radius machine built specifically for research on clay liners. Two permeability cells were fabricated in order to provide direct data comparisons between the two methods of permeability testing. In both cases, the centrifuge method proved to be effective and efficient, and was found to be free of both the technical difficulties and leakage risks normally associated with laboratory permeability testing of fine grained soils. Two materials were tested, a consolidated kaolin clay having an average permeability coefficient of 1.2{times}10{sup -9} m/s and a compacted illite clay having a permeability coefficient of 2.0{times}10{sup -11} m/s. Four additional tests were carried out to demonstrate that the 0.5 m radius centrifuge could be used for linear performance modelling to evaluate factors such as volumetric water content, compaction method and density, leachate compatibility and other construction effects on liner leakage. The main advantages of centrifuge testing of clay liners are rapid and accurate evaluation of hydraulic properties and realistic stress modelling for performance evaluations. 8 refs., 12 figs., 7 tabs.}
place = {Canada}
year = {1991}
month = {Aug}
}