Comparison Of Direct Simple Shear Confinement Methods On Clay And Silt Specimens

Abstract

ASTM D2435 (2000) allows for both Teflon coated stacked rings and wire reinforced membranes to be used as confinement methods in direct simple shear (DSS) testing of soils. Although stacked rings were developed over 50 years ago, wire reinforced membranes have been used almost exclusively in practice. Over the past 10 years, however, stacked rings have become more popular and are now the dominant confinement system sold and used in the United States. Despite this change, no comprehensive testing program comparing both confinement methods has been published. The objective of this thesis is to perform a laboratory testing program to compare the results of using stacked rings and wire reinforced membranes as a confining system for direct simple shear tests. Tests were performed on samples of a high plasticity clay from the Gulf of Mexico, a low plasticity organic silt from Rhode Island, and a low plasticity sensitive clay from Portland, Maine.

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Document Details

Document Type
Technical Report
Publication Date
Dec 20, 2011
Accession Number
ADA556184

Entities

People

  • Seth T. Mcguire

Organizations

  • University of Rhode Island

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Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Civil Engineering
  • Cohesive Soils
  • Control Systems
  • Engineering
  • Geotechnical Engineering
  • Literature Surveys
  • Materials
  • Mechanics
  • Pore Pressure
  • Rhode Island
  • Shear Stresses
  • Shear Tests
  • Stress Strain Relations
  • Stresses
  • Structural Engineering
  • Test Methods
  • United States

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