FROST PROTECTION USING POLYSTYRENE FOAM, ESPECIALLY FOR ROADS (TJAELSKYDD MED STYRENCELLPLAST, SPECIELLT VID VAEGAR)

For many years, polystyrene foam has been used for frost insulation under roads. This report relates some earlier as well as some recent experience with its use. The report also contains some recommendations for the design of plastic foam insulation. Foam is especially well suited to conditions where the subgrade which may be subjected to frost contains sharp variations between sections of severe and slight frost heaving. Polystyrene foam can be used in resurfacing roads and for constructing new ones, as well as for insulating underground pipes. Other uses are in iceskating rinks, meat lockers, and cold-storage rooms. Frost conditions in Sweden are examined and the average freezing index for various regions of the country is given. This information is related to frost heaving for the various regions. The last month of frost and the length of frost breakup are also considered. The production of polystyrene foam and its properties as an insulating material are described briefly. Important parameters are layer thickness, water content, and heat conductivity.

Media Info

  • Pagination: 40 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00343058
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: VTI/MEDDELANDE-202
  • Files: NTIS
  • Created Date: Sep 16 1981 12:00AM