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Title: Constitutive model for a thawing, frost-susceptible sand
Authors: Shoop, Sally A. (Sally Annette)
Affleck, Rosa T.
Janoo, Vincent C.
Haehnel, Robert B.
Barrett, Benjamin
Publisher: Cold Regions Research and Engineering Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Series/Report no.: ERDC/CRREL ; TR-05-3.
Abstract: A material model for soft, wet soil was generated to simulate the deformation behavior of thawing soil under vehicle loading on paved and unpaved roads. Freeze–thaw action produces a loose, wet soil that undergoes large deformation when subjected to vehicle loads. The soil modeled is a frost-susceptible fine sand, which was used in full-scale tests of paved and unpaved road sections in CRREL’s Frost Effects Research Facility (FERF). The soil was subjected to a full suite of saturated and unsaturated triaxial testing, using density, moisture, and loading conditions duplicating those experienced during the freeze–thaw testing in the FERF. Material parameters were generated for a capped Drucker–Prager plasticity model. These were calibrated in triaxial test simulations using the commercial finite element code ABAQUS. The material model was then implemented in several three-dimensional finite element simulations for validation and robustness. The model for Lebanon Sand was compared to the same model for other granular materials.
Description: Technical Report
Appears in Collections:Technical Report

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