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PSV tyre / test specimen contact

Woodward, David, Millar, Phillip, McQuaid, Grainne, McCall, Rebecca and Boyle, Oisin (2016) PSV tyre / test specimen contact. In: 8th RILEM International Symposium on Testing and Characterisation of Sustainable and Innovative Bituminous Materials. (Eds: Canestrari, Francesco and Partl, Manfred), Springer RILEM Bookseries, pp. 447-457. ISBN 978-94-017-7342-3 [Book section]

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DOI: 10.1007/978-94-017-7342-3

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.

Item Type:Book section
Keywords:PSV tyre / test specimen interface, Contact area, 2d 3d modeling
Faculties and Schools:Faculty of Art, Design and the Built Environment
Faculty of Art, Design and the Built Environment > School of the Built Environment
Research Institutes and Groups:Built Environment Research Institute
Built Environment Research Institute > Studies Allied to Built Environment Research (SABER)
ID Code:32462
Deposited By: Dr David Woodward
Deposited On:26 Oct 2015 15:16
Last Modified:26 Oct 2015 15:16

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