Pavement
Development of Laboratory Measures to Assess Surfacings used in High Stress Applications
- Publication no: AP-T105-08
- ISBN: 978-1-921329-78-4
- Published: 21 August 2008
- PDF (free) Download
This report describes the development of a laboratory test used to assess surfacing response to horizontal stresses and contributes a stronger performance focus for the specification of materials used in bituminous surfacings used in these applications. Expert opinions were sought on ranking various surfacing types as it was difficult to obtain a wide range of surfacings from the field. A skewed wheel tracking device was developed to test surfacing resistance to horizontal shear forces.
- AP-T105/08 DEVELOPMENT OF LABORATORY MEASURES TO ASSESS SURFACINGS USED IN HIGH STRESS APPLICATIONS
- 1. INTRODUCTION
- 2. SOURCES OF HORIZONTAL STRESS
- 2.1. Braking
- 2.2. Traction – Acceleration
- 2.3. Turning Movements
- 3. FACTORS CONTRIBUTING TO SURFACING PERFORMANCE
- 3.1. Influence of Temperature
- 3.2. Binder Contributions at the Interface
- 3.3. Binder Contributions within the Surfacing
- 3.4. Surfacing Types
- 4. PERFORMANCE MEASUREMENTS IN THE LABORATORY
- 4.1. Sample Issues
- 4.2. Open Graded Asphalt Testing
- 5. CONCLUSIONS
- 6. FUTURE RESEARCH
- REFERENCES
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