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Title:

Analysis of the Effect of Pavement Temperature on the Frictional Properties of Flexible Pavement Surfaces

Abstract:

Pavement friction measurements experience short- and long-term seasonal variations due to vehicular and environmental effects. Since both the tire rubber and the hot-mix-asphalt (HMA) pavement surface are viscoelastic materials, temperature has an affect on measured frictional properties. This paper presents research that quantifies the short-term effect of pavement surface temperature on the frictional properties of the pavement-tire interface for HMA surfaces used in Virginia. Regression analysis was used to determine the effect of pavement temperature on the measured skid number at different speeds, as well as on various friction model parameters. This analysis showed that pavement temperature has a significant effect on pavement frictional measurements and on the sensitivity of the measurements to the test speed. Hence, the measured skid number would be dependent on the testing speed and temperature at measurements, as well as surface mix. However, for the standard 9.5-mm HMA surface tested at 64 km/hr, the effect of temperature was found to be insignificant and becomes more pronounced as speed changes.

Source(s):

84th Transportation Research Board (TRB) Annual Meeting; Virginia Tech Transportation Institute, University of Illinois at Urbana-Champaign and Beijing KOCH Asphalt Research and Development Center (China). For an electronic copy of this resource, please direct your request to WeatherFeedback@dot.gov.

Date: 2005

Author:

Flintsch, Luo, Al-Qadi

Keywords:


Pavement friction

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