Chapter
Apr 26, 2012
DSS Test Results Using Wire-Reinforced Membranes and Stacked Rings
Authors: C. D. P. Baxter [email protected], A. S. Bradshaw, M. Ochoa-Lavergne, and R. HankourAuthor Affiliations
Publication: GeoFlorida 2010: Advances in Analysis, Modeling & Design
Abstract
Recently developed American Society for Testing and Materials (ASTM) standards for direct simple shear (DSS) testing require that the sample be laterally confined in either a wire-reinforced membrane or stack of thin rings. Although wire-reinforced membranes are more commonly used in practice, it is uncertain how the results of the two confinement methods compare. This paper presents the results of direct simple shear tests performed on high plasticity clay and low plasticity organic silt to compare the effects of using either wire-reinforced membranes or Teflon-coated rings for lateral confinement. Comparisons are made for both the consolidation and shear phases of the test. The consolidation data suggest that the rings may provide increased lateral stiffness relative to the wire membranes. When appropriate system corrections were applied to the measured soil test data, the results of both confinement systems produced comparable results in terms of stress-strain behavior and strength.
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© 2010 American Society of Civil Engineers.
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Published online: Apr 26, 2012
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A.M.ASCE
Departments of Ocean/Civil and Environmental Engineering, University of Rhode Island, Narragansett, RI, 02881;. E-mail: [email protected]
A. S. Bradshaw
A.M.ASCE
Department of Civil Engineering, Merrimack College, Andover, MA, USA.
M. Ochoa-Lavergne
Fugro Consultants, Inc., Houston, Texas, USA.
R. Hankour
A.M.ASCE
Vice President, Geocomp Corporation, Boxborough, MA, USA.
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Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
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