ISSN: 1945-7545
CODEN: GTJODJ
Published Online: 1 September 2006
Page Count: 9

Modified Ring Shear Apparatus for Unsaturated Soils Testing

Sedano, JAI
Ph.D. Candidate, University of Ottawa, Ontario,

Vanapalli, SK
Assistant Professor, University of Ottawa, Ontario,

Garga, VK
Professor, University of Ottawa, Ontario,

(Received 4 October 2005; accepted 25 April 2006)

Abstract

This paper presents the design details of an automated modified ring shear apparatus for the testing of unsaturated soils using the axis-translation technique. The components of this automated system are described, as well as the types of tests that it can be used for. The key cell components include a flushing system and a precise volume gage system. The paper presents typical test results including the continuous monitoring of water as the test proceeds. A methodology to correct the water content measurements for the effect of air infiltration and evaporation or condensation of water is included.

Keywords:
modified ring shear, unsaturated soils, shear strength, residual strength, axis translation

Paper ID: GTJ100002
DOI: 10.1520/GTJ100002
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