PSV tyre / test specimen contact

David Woodward, Phillip Millar, Grainne McQuaid, Rebecca McCall, Oisin Boyle

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

The PSV test has been used for many years. It is the harmonised European standard method for predicting an aggregates polishing resistance. This paper considers the test tyre / test specimen interface. This was done by painting the PSV test specimen surface and subjecting it to a period of accelerated polishing. Digital images of the test specimen were analysed using 2d and 3d techniques. Tyre / aggregate contact area was found to range from 17 % to 92 % of the test specimen area. Factors such as particle shape (convex, concave, flat) and particle orientation in the test specimen influence contact. The contact interface relates to the uppermost 1 to 2 mm of the test specimen surface. A weak relationship was found showing contact area to increase as wet skid resistance decreased. Whilst aggregate micro-texture remains an important factor the research suggests addi-tional scales of texture and contact influence water films at the interface. The findings of this paper impact attempts to measure road skid resistance using non-contact methods of measurement.
Original languageEnglish
Title of host publication8th RILEM International Symposium on Testing and Characterisation of Sustainable and Innovative Bituminous Materials
EditorsFrancesco Canestrari, Manfred Partl
PublisherSpringer
Pages447-457
ISBN (Print)978-94-017-7342-3
DOIs
Publication statusPublished - 30 Aug 2015

Publication series

NameRILEM Bookseries
PublisherSpringer, Dordrecht
Volume11
ISSN (Print)2211-0844
ISSN (Electronic)2211-0852

Keywords

  • PSV tyre / test specimen interface
  • Contact area
  • 2d 3d modeling

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    Phillip Millar

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    Cite this

    Woodward, D., Millar, P., McQuaid, G., McCall, R., & Boyle, O. (2015). PSV tyre / test specimen contact. In F. Canestrari, & M. Partl (Eds.), 8th RILEM International Symposium on Testing and Characterisation of Sustainable and Innovative Bituminous Materials (pp. 447-457). (RILEM Bookseries; Vol. 11). Springer. https://doi.org/10.1007/978-94-017-7342-3_36