Controlling the thermal regime of the road surface in the cryolithic zone

The thermal regime of the road surface of automobile roads in the cryolithic zone determines its reliable and safe exploitation. An important indictator of the thermal regime is the thawing depth of the road foundation (the underlying soil). The purpose of this research was to determine the influence of the Biot number, characterizing the thermal resistance of the structural layers of the road, on the thawing depth of the road surface. On the basis of simple engineering formulas, the basic qualitative and quantitative regularities of the influence of Fourier and Stefan numbers on the Biot number value which allows thawing of the road foundation up to a given depth in the warm period of the year were surveyed. 3D charts allowing to determine the required Biot number in a wide range of initial data were created. Knowing the Biot number, it is possible quickly to determine the thermal resistance and to select a fitting material for the additional thermal insulation layer for the structure of the road surface.


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  • Accession Number: 01854793
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Aug 17 2022 9:33AM