The results of a 3-year insulated road study showed that frost penetration inward from the edge of an insulated area is about the same as the downward penetration on a control section. Moisture accumulated in the frost-susceptible subgrade after the frost line penetrated the insulation. During periods of rapid cooling, the temperature of the surface above an insulated pavement may be lowered sufficiently to permit surface icing if atmospheric moisture conditions are suitable. Terminating the insulation without feathering induces abrupt changes in elevation in the roadway as a result of heaving. /Author/

Media Info

  • Media Type: Print
  • Features: Figures; References;
  • Pagination: pp 80-83
  • Monograph Title: Subsidence over mines and caverns, moisture and frost actions, and classification
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00158154
  • Record Type: Publication
  • ISBN: 0309025885
  • Files: TRIS, TRB
  • Created Date: Sep 28 1977 12:00AM