Empirical Models for the Prediction of Temperature Differentials in Concrete Pavements in Tropical Environment

This paper presents the results of over one year of monitoring concrete pavement slabs in Sao Paulo, where a typical hot-wet environment prevails. The experimental test tracks comprised 15 different concrete slabs that were instrumented with thermal resistors, which allowed for the monitoring of temperatures. Data could disclose the particulars of concrete pavement behavior due to the air temperature and moisture as well as solar radiation (environmental loads). The air temperature is the main factor influencing thermal gradients in slabs and therefore even slabs not subjected to direct solar radiation require curling analysis. Negative gradients values showed to be less significant than daytime gradients that are for 4 to 5 times greater. A particular interest was dedicated to exploring the harmful effects of saturated granular bases on concrete pavement thermal gradients during rainy seasons. Data from the field experiments concerning temperatures on concrete slabs allowed for the calibration of empirical models to forecast thermal differentials as well as concrete surface temperature as a function of climate data obtained at the experimental site.

  • Corporate Authors:

    Universidade Presbiteriana Mackenzie

    Rua da Consolacao, 930
    , Sao Paulo  Brazil 

    Brazilian Pavement Association

    Miguel Couto 105, Sobrelojas 204 e 205
    Rio de Janiero, CEP 20070-030,   Brazil 
  • Authors:
    • Severi, Andrea A
    • Balbo, Jose T
    • da Silva Pereira, Deividi
  • Conference:
  • Publication Date: 2003

Language

  • English

Media Info

  • Media Type: CD-ROM
  • Features: Figures; References;
  • Pagination: 12p
  • Monograph Title: 2003 International Conference. Airports: Planning, Infrastructure & Environment

Subject/Index Terms

Filing Info

  • Accession Number: 01144255
  • Record Type: Publication
  • Report/Paper Numbers: 01-014
  • Files: TRIS
  • Created Date: Nov 17 2009 2:58PM