Frozen road operation improvements.
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Frozen road operation improvements.

  • Published Date:

    2009-05-01

  • Language:
    English
Filetype[PDF-5.11 MB]


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Frozen road operation improvements.
Details:
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  • OCLC Number:
    757552224
  • Edition:
    Final report; 8/11/06-5/31/09.
  • NTL Classification:
    NTL-HIGHWAY/ROAD TRANSPORTATION-Soils and Geology ; NTL-HIGHWAY/ROAD TRANSPORTATION-Pavement Management and Performance ; NTL-HIGHWAY/ROAD TRANSPORTATION-HIGHWAY/ROAD TRANSPORTATION ; NTL-HIGHWAY/ROAD TRANSPORTATION-Construction and Maintenance ;
  • Abstract:
    A research study in 1996-1997, sponsored by WisDOT, was undertaken by the PI of this proposal to develop a computer model to correlate climate and pavement data for the year in progress in order to project when to impose and lift weight restrictions. Our research team collected field data relating to weather and road stiffness over two winter-spring periods, which enabled the development of a six-phase computer model integrating weather conditions, heat transfer, roadway stiffness, stress-strain effects, and estimates of pavement damage load (EDL) for a given road 30, 60, 90, or 120 days into the future based on user-supplied average daily temperatures experienced in the year to date. WisDOT’s Bureau of Highway Operations, (BOH) used this software, known as UWFROST, during the ’98-’99 and ’99-’00 winter seasons and found the software’s fall freezing and spring thawing projections to be quite accurate for normal winters. Since this study was conducted, additional data has been collected using frost tubes to declare the roads frozen and then unfrozen. Changes in Wisconsin climate have also been noted which will affect the model. More data has been collected at the national level, which relates pavement material moduli to temperature. All of which needs to be integrated into an updated version of the model.
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