REMOLDING STRESSES AND DIRECTIONAL STRENGTH BEHAVIOR OF AN ILLITIC CLAY

The cause and the nature of anisotropy in a cohesive soil was investigated by direct shear and triaxial compression tests. Samples formed under hydrostatic stress showed isotropic shear strength and pore pressure behavior as well as the lack of bias in soil fabric. When the samples from the same clay were molded under one-dimensional consolidation stress, the pore pressure was observed to be isotropic, but the effective stress strength was not. Also, these samples had oriented soil structure. The anisotropic strength resulted from the sample stress history and not from the stresses existing prior to shearing. The ratio between the pore pressure at failure and the mean consolidation pressure during remolding, as well as the inclination of the failure plane to the specimen axis, were observed to be essentially constant for all specimens. /Author/

• Corporate Authors:

  American Society for Testing and Materials (ASTM)

  100 Barr Harbor Drive, P.O. Box C700
  West Conshohocken, PA  United States  19428-2957
• Authors:
  • KHERA, R P
• Publication Date: 1976-1

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 101-108
• Serial:
  • ASTM Journal of Testing and Evaluation
  • Volume: 4
  • Issue Number: 1
  • Publisher: Federal Highway Administration

Subject/Index Terms

• TRT Terms: Anisotropy; Cohesive soils; Compression; Consolidations; Direct shear tests; Failure; Hydrostatic pressure; Illites; Isotropy; Pore pressure; Remolded clay soils; Shear strength; Soil structure; Strength of materials; Stresses
• Uncontrolled Terms: Triaxial compression
• Old TRIS Terms: Anisotropy; Failure theory; Remolded clays
• Subject Areas: Geotechnology; Highways;

Filing Info

• Accession Number: 00129511
• Record Type: Publication
• Files: TRIS
• Created Date: Mar 10 1976 12:00AM