Stress Path Testing of an Anisotropic Sandstone

The Berea sandstone used in this study is transversely isotropic with respect to elastic response, with P-wave velocities of 2,160 meters per second (m/s) normal to bedding and 2,290 m/s parallel to bedding, a variation of only 6%. Triaxial compression and extension tests involving failure by loading and unloading were performed along the two directions of symmetry. With axial stress applied parallel to bedding, the internal friction angle was approximately 55° for compression and extension, indicating no intermediate stress effect for the linear Mohr-Coulomb criterion. However, for axial stress normal to bedding, the friction angle in compression was 50°, whereas in extension it was 44°. This anomalous behavior was attributed to strength anisotropy of the sandstone.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/3519342
• Authors:
  • Dehler, William
  • Labuz, Joseph F
• Publication Date: 2007-1

Language

• English

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: pp 116-119
• Serial:
  • Journal of Geotechnical and Geoenvironmental Engineering
  • Volume: 133
  • Issue Number: 1
  • Publisher: American Society of Civil Engineers
  • ISSN: 1090-0241
  • Serial URL: http://ojps.aip.org/gto

Subject/Index Terms

• TRT Terms: Anisotropic materials; Compression; Compression tests; Elasticity (Mechanics); Failure; Internal friction; Load tests; Sandstones; Shear strength; Strength of materials; Stresses; Testing; Triaxial shear tests
• Uncontrolled Terms: Friction angle; Mohr-Coulomb failure criterion; Stress paths
• Subject Areas: Geotechnology; Highways; I43: Rock Mechanics;

Filing Info

• Accession Number: 01042735
• Record Type: Publication
• Files: TRIS
• Created Date: Feb 24 2007 7:00PM