Frost Heave Patterns and Optimal Design of Insulated Culverts

Details

• Creators:
  Duquennoi, Christian ; Sterling, Raymond L.
• Corporate Creators:
  University of Minnesota
• Corporate Contributors:
  Minnesota. Dept. of Transportation
• Subject/TRT Terms:
  • Culverts
  • Heat
  • Motion
  • Variance
  • Insulation systems
  • Soils
  • Frost
  • Stresses
  • Thermal properties
• Publication/ Report Number:
  MNIRC - 91-08
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States
• Corporate Publisher:
  Minnesota. Department of Transportation
• Abstract:
  When a culvert is placed under a road, the presence of air at freezing temperatures in the culvert may induce differential frost conditions in pavements. Also, a differential frost heave pattern can appear when the culvert is placed in a frost-susceptible soil. In this project, computer simulations of temperature distributions and frost heave patterns around culverts were carried out, and the effects of various insulation techniques were analyzed under weather conditions representative of Minnesota winters. The pavement slope variance, which is a commonly used variable describing the roughness (or loss of serviceability) of a given pavement section profile, proved to be a valuable indicator under frost heave conditions. Results indicate that culvert insulation reduces the value of the pavement slope variance throughout the freezing period: the higher the insulation thickness, the lower the resulting slope variance (or loss of serviceability).
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/29453/dot_29453_DS1.pdf
• File Type:
  [PDF - 529.56 KB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:3609af0196c809fe0ff59cc6daeaf45e6748481d52e87d9c467e9432d5afbe0e7f6794981806d9861c776d623929e98250e67ad317beb6f6e4d15349ff77dd4e