Tall Oedometer Testing: Method to Account for Wall Friction
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Volume 15, Issue 2
Abstract
The oedometers used for one-dimensional consolidation tests are proportioned such that their height-to-diameter ratio lies in the range 0.17–0.40. Sometimes, it is desirable to test a soil specimen that has a significantly larger height-to-diameter ratio, where the wall friction must be considered in the analysis. Such tall oedometers can become useful tools in consolidation tests, if the wall friction can be accounted for rationally. The objective of this paper is to develop some theoretical basis for analyzing consolidation test data from tests carried out in tall oedometers. It is shown that the same average degree of consolidation versus time factor charts can be used for height-to-diameter ratios as much as 3, provided the specimen is doubly drained. Consolidation tests carried out in the standard oedometer and tall oedometer in the laboratory gave very similar values of coefficients of consolidation.
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Information & Authors
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Published In
International Journal of Geomechanics
Volume 15 • Issue 2 • April 2015
Copyright
© 2014 American Society of Civil Engineers.
History
Received: Mar 12, 2013
Accepted: Sep 3, 2013
Published online: Apr 10, 2014
Published in print: Apr 1, 2015
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