Measuring the swelling of clay liners in the U.N.B. mini centrifuge
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Date
1997
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Publisher
University of New Brunswick
Abstract
It is important to determine the swelling potential of compacted clay liners.
Swelling of a clay liner will result in an increased permeability and a reduction in
performance. Unexpected groundwater contamination could occur if the increase
in permeability is significant.
The U.N.B. mini centrifuge was used to measure the swelling potential of
different clay liners. Soil-bentonite and bentonite liners were tested. Four tests
series consisting of six test each, were performed according to the "modeling of
models" principle. The testing methodology used in each test series is described.
Results indicate that the modeling of models was successful only in the tests
performed at higher gravitational forces on small models. Model size effects are
described and are used to explain the tests failures at lower accelerations.