Modelling of rubber friction on asphalt surfaces using a fractal approach

One of the most important road safety requirements is the capability to minimize the skidding of vehicles by providing high levels of friction. For this reason this contribution examines the hysteresis friction of a sliding elastomer on various types of asphalt surfaces with different levels of polishing. The data from a high resolution surface profilometer are used in order to characterize asphalt surfaces via three main surface descriptors using a fractal approach. It allows defining the contribution to rubber friction of asphalt roughness at different length scales considering the energy spent by the local deformation of the rubber due to surface asperities of the asphalt. The results show that this method can be used in order to characterize in an elegant manner the surface morphology of asphalt surfaces and to quantify the friction coefficient of sliding rubber as a function of surface roughness, load and speed. The theoretical results are in good agreement with experimental observations.

Language

  • English

Media Info

  • Pagination: 10p
  • Monograph Title: 5th International Conference Bituminous Mixtures and Pavements, June 1 to 3, 2011, Thessaloniki, Greece: proceedings

Subject/Index Terms

Filing Info

  • Accession Number: 01580688
  • Record Type: Publication
  • Source Agency: ARRB
  • ISBN: 9789609992206
  • Files: ATRI
  • Created Date: Nov 17 2015 10:45AM