THERMAL CLIMATE REGIME ON ROAD AND GROUND SURFACE

The results are presented of an extensive field survey concerning the thermal interaction between climate and road and ground surface, and information is given regarding the 'freezing index' design methods for frost penetration. The data is acquired by 9 Recording Climate Regions (RCR) stations from long term records of climate and the resulting thermal condition on road and ground surface and subgrade. The Road Section is built with 0.05 m bituminous pavement and approximately 0.5 m base course of crushed rock/gravel/sand onto the subgrade. The ground section is mould/sandy soil the same subgrade as the road. The subgrade composite is moraine/sand/silt/silty clay with variable water content. Extensive use is made of automatic data recording and handling equipment. The thermal interaction between climate and construction may be developed as either heat flow or temperature model. The results are detailed and equations are given which illustrate the surface heat balance. The difference between pavement temperature and ground temperature is noted, and the deviation of the pavement freezing index and ground freezing index are described. The freezing index factors are developed for paved roads with conventional base construction, and ground surfaces with natural snow cover during winter. The correction factors (functions of the duration of winter and the mean snow depth respectively) are given.

  • Supplemental Notes:
    • Report No. 410 at "Fondation Francais d'Etudes Nordiques", 6th Intl. Congress, Le Havre, France, April 23-25, 1975.
  • Corporate Authors:

    Royal Norwegian Council for Scientif & Ind Res

    Gaustadalleen 25
    Oslo 3,   Norway 
  • Authors:
    • Heiersted, R S
  • Publication Date: 1975-10

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 5-12
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00131060
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Apr 21 1976 12:00AM