GEOTEXTILES TO STABILIZE THAWING, LOW-BEARING-CAPACITY SOILS: A COMPARISON OF TWO DESIGN METHODS FOR USE BY THE US ARMY

Thawing fine-grained soils are often saturated and have extremely low bearing capacity. Geotextiles reinforce unsurfaced roads on weak, saturated soils and therefore are good candidates for stabilization of thawing soils. To stabilize the soil, a geotextile is placed on it, and then the geotextile is covered with aggregate. Design involves selection of aggregate thickness and geotextile. The US Army uses one of two commonly used design techniques for geotextile reinforcement of low-volume roads. The other method, which offers potential to reduce aggregate thickness over the geotextile by accounting for the tensile properties of the geotextile, was compared with the Army method. Although it offers considerable aggregate savings over the current method, it may be unconservative with respect to stresses estimated at the subgrade surface. Future work should consider adopting a method that provides realistic estimates of stresses at the subgrade as well as aggregate savings through accounting for the tensile properties of geotextiles.

Language

  • English

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 427-440

Subject/Index Terms

Filing Info

  • Accession Number: 00795520
  • Record Type: Publication
  • ISBN: 0935803084
  • Report/Paper Numbers: Volume 1
  • Files: TRIS
  • Created Date: Jul 20 2000 12:00AM