ONE-DIMENSIONAL COMPRESSION OF SANDS AT HIGH PRESSURES

The authors created a one-dimensional testing apparatus to test soils to axial stresses up to 850 MPa. The apparatus was instrumented with strain gauges such that lateral soil stresses and lateral earth pressure at rest could be inferred from measured circumferential strains. Quartz, Cambria, and gypsum sands in three different densities were tested. Tests revealed that the effect of initial density disappeared at high stress magnitudes. The stress magnitude was higher for mineralogically harder grains than for softer ones. The inferred values of lateral earth pressure at rest for the mineralogically harder Cambria sand were constant at high pressures, but slightly below that indicated by Jaky's equation. The softer gypsum sand, however, had increasing values of lateral earth pressure at rest as stress magnitude rose. The increase was attributed to inelastic, viscous flow during shearing.

Language

  • English

Media Info

  • Features: Appendices; Figures; References;
  • Pagination: p. 147-154
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00716506
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Feb 24 1996 12:00AM