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.
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Corporate Authors:
Universidade Presbiteriana Mackenzie
Rua da Consolacao, 930
, Sao Paulo BrazilBrazilian 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
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Conference:
- 2003 International Conference. Airports: Planning, Infrastructure & Environment
- Location: Rio de Janiero , Brazil
- Date: 2003-6-8 to 2003-6-11
- 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
- TRT Terms: Airport runways; Concrete pavements; Empirical methods; Granular bases; Moisture content; Pavement design; Temperature; Tropics
- Geographic Terms: Sao Paulo (Brazil)
- Subject Areas: Aviation; Pavements; I22: Design of Pavements, Railways and Guideways;
Filing Info
- Accession Number: 01144255
- Record Type: Publication
- Report/Paper Numbers: 01-014
- Files: TRIS
- Created Date: Nov 17 2009 2:58PM