Characterization of tire impact on the pavement behaviour

Abstract

The paper presents research conducted following an investigation carried out by the Quebec Ministry of Transportation's Roadwork Service on the effects of tire width. The study looked at the impact of tires on the surface layer of pavement and the pavement behaviour as a result of this impact. The strains at a depth of 25 mm in the pavement, at the base of the pavement, and at the top of the subgrade were measured. Measurements were taken over two seasons representative of conditions prevailing in Quebec, in spring and in summer. Three parameters, the type of tire, the inflation pressure of the tire, and finally the load, were varied. The amplitude of damage produced by the circulation of a vehicle was then quantified to evaluate and compare the overall impact of various types of tires on pavement according to the various configurations.Key words: pavement, surface layer, tire, interface, strain.