Evaluation of Thermal Warping in Pavements

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Title: Evaluation of Thermal Warping in Pavements

Author(s): M. A. Miltenberger, E. K. Attiogbe, and A. R. Stoddard

Publication: Special Publication

Volume: 227

Issue:

Appears on pages(s): 367-384

Keywords: curling; pavement; slab on grade; thermal expansion; warping

Date: 3/1/2005

Abstract:
Temperature effects are the predominant cause for volume change in concrete pavements. This paper describes an experimental investigation of thermal volume change conducted to improve the understanding of joint movement in concrete pavement. Four slab strips containing embedded strain gauges and thermocouples were monitored in a controlled environment under four heating rates. Each strip was monitored for translation, rotation, and warping height. Key findings of the experiment include the internal strain distribution and non-linear thermal gradients produced by asymmetrical heating. The laboratory data are compared with long-term data from an instrumented parking lot pavement. Analysis of the data provides insight into the prediction of thermal movements and determination of thermal stress development in pavements.