Citation

Addis RR. Proc. Int. Tech. Conf. Enhanced Safety Vehicles 1992; 1992: 233-242.

Copyright

(Copyright © 1992, In public domain, Publisher National Highway Traffic Safety Administration)

DOI

unavailable

PMID

unavailable

Abstract

This paper reviews current knowledge of the influence of vehicle parameters on pavement wear, including axle configuration and the type of wheel assembly used (dual or wide based "super-single"), and tyre pressure. Further confirmation of the overall relationship between axle weight and pavement wear is presented, and the conditions under which departures from this relationship occur are noted. The effects of vehicle suspension on dynamic loading of a pavement are discussed, and the need for development of models of pavement response and performance able to take these into account is noted. Recent work on the overall relationship between axle load (10 Tonnes and 11.5 Tonnes) and pavement wear was carried out by the Laboratoire Central des Ponts et Chaussees (LCPC) as part of the FORCE experiment. The results indicate that for most purposes the fourth power law relating structural wear in pavements and wheel load is adequate. However departures may arise when considering a wide range of pavement types, or the nature and degree of deterioration. Measurements in a pavement under traffic indicate that the effects upon pavement life of axle configuration vary according to whether fatigue or deformation criteria are considered. The effects are usually greater for triple axles than for tandem axles. Wide single tyres produce considerably greater damage than the dual tyre arrangement, and this is greater for thinner pavements. Increases in pavement wear due to tyre pressure changes are substantial. A 40 PSI increase in tyre pressure could increase pavement wear due to fatigue by a factor of 1.26.