A METHOD FOR CALCULATING THE TEMPERATURE GRADIENTS IN ASPHALTIC CONCRETE PAVEMENT STRUCTURES BASED ON CLIMATIC DATA

Data on the temperature gradients in 250mm thick layers of asphaltic concrete (ac) at sites near Brisbane and Canberra have been collected over periods of one year. These data have been analysed to develop a method for calculating the temperature gradients likely to be encountered under clear shy conditions at any site in Australia at any time of the year . The method is based on the solar radiation (insolation) which will be received at a particular site on a particular day and either measurement of the pavement surface temperature at two hours after sunrise on that day or an estimate of this temperature from the monthly mean maximum air temperature. Approximate expressions, in terms of the total insolation for a day, are used to define the radiation flux from the sun absorbed by the pavement surface during daylight and the energy flux from the sun out of the surface during both day and night. Conduction of heat within the pavement slab is treated by a finite difference procedure. The method is limited to clear sky days and nights but these include the conditions in which the highest and lowest pavement temperatures will be encountered and the ones of most interest in the design of ac and in the structural design of pavements in which ac is a major component. /Author/TRRL/

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    ARRB Group Ltd.

    Vermont South, Victoria  Australia 

    Mezhdunarodanya Kniga

    Smolenskaja Ploscad 32/34
    Moscow G-200,   USSR 
  • Authors:
    • Dickinson, E J
  • Publication Date: 1978-12

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 16-34
  • Serial:

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Filing Info

  • Accession Number: 00196780
  • Record Type: Publication
  • Source Agency: ARRB Group Ltd.
  • Files: ITRD, TRIS, ATRI
  • Created Date: Feb 27 1980 12:00AM