EFFECTS OF DIFFERENT TYRE MOUNTS ON THE FATIGUE BEHAVIOUR OF A THICK BITUMINOUS PAVEMENT

An experiment was carried out on the ALT facility of the LCPC (Nantes - France) in 1999 to analyse the effects of different tyre mounts on pavement durability. The experimental pavement was a very thick bituminous structure (80 mm AC/400 mm RBAC/400 mm UGM). Four different tyre mounts, with various inflation pressures and/or applied loads (leading to twelve different configurations) have been tested. Strains measured at the bottom of the structure for two speeds, at different temperatures, have been analysed with a model. It led to the following conclusions: (i) for an equal load, a large imprint tyre mount is less aggressive than a tyre mount with a smaller one: wide base single tyre assemblies, according to their geometry, may be penalized when compared to dual ones; (ii) the longitudinal strain measured at the bottom of the structure is always greater than the transverse one; and (iii) an under inflated tyre induces smaller strains in the pavement. For the covering abstract see ITRD E118503.

Language

  • English

Media Info

  • Features: References;
  • Pagination: p. 1255-65
  • Serial:
    • Volume: 2

Subject/Index Terms

Filing Info

  • Accession Number: 00963880
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • ISBN: 90-5809-398-0
  • Files: ITRD
  • Created Date: Oct 3 2003 12:00AM