The design of new pavements is reported which consist of full-depth asphalt or base courses of lean concrete of Styropor-Concrete (the styropor-concrete serves as an insulator layer). Extensive field tests were carried out to study the behavior of flexible pavements with base courses of Styropor-Concrete. Temperature measurements and high-precision levelling investigations of the behavior of full-depth constructions, show that frost occurs up to an average value of 34.0 mm. Strong settling was measured until May. Very small and uniform heaving of maximum 2.7 mm were noted. Benkelman-Beam deflection measurements confirmed the theoretical values. In the case of rigid pavements the application of base courses of lean concrete with a thickness of more than 20 cm leads to a very considerable stress reduction, especially if the cement top layer is continuously reinforced. Since there is a favorable load distribution over the entire system, there is no risk of undue stresses during the critical thaw period. A discussion of frost criterion leads to the conclusion that no damage due to frost will occur in road construction if the thawing from above is impeded and the stresses in the subgrade are kept as low as with the standardized pavements. Figures are presented which illustrate the construction of the various pavements.

  • Supplemental Notes:
    • This paper was presented during the Symposium on Frost Action on Roads held in Oslo, Norway, 1-3 October, 1973.
  • Corporate Authors:

    Organisation for Economic Co-operation and Development (OECD)

    2, rue André Pascal
    Paris,   France  75775 Paris Cedex 16
  • Authors:
    • Leyrauf, G
  • Conference:
  • Publication Date: 1973


  • English

Media Info

  • Features: Figures; References;
  • Pagination: p. 13-35
  • Serial:
    • Volume: 2

Subject/Index Terms

Filing Info

  • Accession Number: 00260453
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Report/Paper Numbers: Conf Paper
  • Files: ITRD, TRIS
  • Created Date: Oct 11 1975 12:00AM