Pavement
Relative Pavement Wear of an Unbound Granular Pavement due to Dual Tyres and Single Tyres
- Publication no: AP-T104-08
- ISBN: 978-1-921329-77-7
- Published: 14 August 2008
- PDF (free) Download
This report presents the results of testing conducted on an unbound granular pavement with a thin bituminous surfacing using a variety of tyre types and half-axle loads applied using the Accelerated Loading Facility. It was found that the reference load on a steer axle with 295/80R22.5 single tyres which would cause the same pavement wear (vertical surface deformation) as the 8.2 tonne Standard Axle fitted with dual 11R22.5 tyres was 5.4 tonne, which is in good agreement with recommendations contained in the Austroads Pavement Design Guide. The load on a steer axle fitted with 295/80R22.5 single tyres which would cause the same damage as a single axle with dual 11R22.5 tyres at the legal load of 9 tonne was found to be 6.0 tonne, which was also in good agreement with Austroads recommendations.
- AP-T104/08 RELATIVE PAVEMENT WEAR OF AN UNBOUND GRANULAR PAVEMENT DUE TO DUAL TYRES AND SINGLE TYRES
- 1. INTRODUCTION
- 2. EUROPEAN UNION COST 334 PROJECT
- 3. EXPERIMENTAL DESIGN
- 3.1. Accelerated Loading Facility (ALF)
- 3.2. Unbound Granular Material
- 3.3. Tyre Configurations and Load
- 3.4. Test Pavement Structure
- 3.5. Performance Assessment during ALF Trafficking
- 4. DETAILS OF ALF TRAFFICKING AND RESULTS
- 4.1. Trafficking Program
- 4.2. Pavement Deterioration under Loading
- 5. EFFECTS OF AXLE LOAD AND TYRE CONFIGURATION ON PAVEMENT WEAR
- 5.1. Effects of Axle Load on Pavement Wear
- 5.2. Effects of Tyre Configuration on Pavement Wear
- 6. DETERMINATION OF SINGLE TYRE AXLE LOADS
- 6.1. Single Tyre Axle Loads Relative to ALF Dual Tyres
- 6.2. Single Tyre Axle Loads Relative to Alternative Dual Tyre Set
- 7. SUMMARY
- REFERENCES
- Vehicle wear, axle wear and tyre configuration factors
- Pavement wear ratio concept
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