STRESS-STRAIN CHARACTERIZATION OF TWO COMPACTED SOILS

This study defines a triaxial test method for controlling or measuring the variables that govern stress-strain behavior of partially saturated, compacted soil in compression. Triaxial data for Peorian loess and Hastings silt loam from Nebraska are combined into a useful, compact form by using exponential functions. Stress-strain curves representing a wide range of initial densities and moisture contents are reasonably well characterized by a hyperbolic stress-strain function. The two coefficients of this function are shown to be exponential functions of void ratio and degree of saturation. Techniques are given for determining elastic (secant) moduli as functions of the level of stress difference, degree saturation, and void ratio. These moduli can be used in flexible pavement design procedures requiring a subgrade stiffness for any reasonable assumed in situ subgrade condition of dry density and moisture content for the soils tested.

Media Info

  • Media Type: Print
  • Features: Figures; References; Tables;
  • Pagination: pp 97-103
  • Monograph Title: SOIL AND ROCK MECHANICS, CULVERTS AND COMPACTION
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00129496
  • Record Type: Publication
  • ISBN: 0309024536
  • Files: TRIS, TRB
  • Created Date: Mar 10 1976 12:00AM