Subgrade Insulation to Prevent Soil Freezing

The basic purpose of this study was to determine if an expanded polystyrene insulating board could prevent subgrade freezing and thereby reduce frost heave. The insulating board was placed between a nine inch Portland cement concrete slab and a frost-susceptible subgrade. In one section at the test site, selected backfill material was placed under the pavement. The Portland cement concrete pavement was later covered by asphalt surfacing. Thermocouples were installed for obtaining temperature recordings at various locations in the surfacing, concrete slab, subgrade and shoulders. This report contains graphs and illustrations showing temperature distributions for two years, as well as profile elevations and the results of moisture tests.

• Record URL:
  • http://publications.iowa.gov/19617/1/IADOT_hr87_Subgrade_Insulation_Prevent_Soil_Freezing_1965.pdf
• 
• Record URL:
  • https://rosap.ntl.bts.gov/view/dot/66638
• Corporate Authors:

  Iowa Highway Research Board

  800 Lincoln Way
  Ames, IA  United States  50010

  Iowa State Highway Commission

  800 Lincoln Way
  Ames, IA  United States  50010
• Publication Date: 1965-12

Language

• English

Media Info

• Media Type: Digital/other
• Edition: Final Report
• Features: Figures; Photos; Tables;
• Pagination: 51p

Subject/Index Terms

• TRT Terms: Concrete pavements; Frost heaving; Ground freezing; Heat insulating materials; Polystyrene; Subgrade (Pavements); Temperature measurement; Thermocouples
• Uncontrolled Terms: Expanded polystyrene; Temperature distributions
• Subject Areas: Design; Highways; Materials; Pavements;

Filing Info

• Accession Number: 01691942
• Record Type: Publication
• Report/Paper Numbers: HR-87
• Files: NTL, TRIS, ATRI, STATEDOT
• Created Date: Jan 31 2019 11:37AM