Pavement
The Results of Testing Overseas Bitumen
- Publication no: AP-T110-08
- ISBN: 978-1-921329-88-3
- Published: 21 August 2008
- PDF (free) Download
Overseas bitumens are now being imported into Australia and the properties of possible future imports were evaluated. Overseas bitumens from various sources were obtained and subjected to a range of chemical and physical tests. These included dynamic shear rheometer measurements, and a shear susceptibility parameter was developed using this data. The overseas bitumens had a wider range of chemical and physical properties than Australian bitumens. Some had temperature susceptibility and asphaltene values associated with surfacing distress in Australia. Most overseas bitumens were manufactured to specifications aimed at controlling asphalt not sprayed seal performance.
- AP-T110/08 THE RESULTS OF TESTING OVERSEAS BITUMEN
- 1. INTRODUCTION
- 2. TEST METHODS
- 2.1. Routine Procedures
- 2.2. Chemical Fractionation using an Iatroscan
- 2.3. Dynamic Shear Rheometer
- 3. SAMPLES
- 4. RESULTS
- 4.1. Temperature Susceptibility
- 4.2. Viscosity, Durability and Mass Loss Results
- 4.3. Iatroscan Fractions
- 4.4. DSR Testing
- 5. DISCUSSION
- 5.1. Temperature Susceptibility
- 5.2. Performance Data
- 5.3. Durability
- 5.4. Iatroscan Fractions
- 5.5. Gaestel Index
- 5.6. Relationship between Superpave PG Grade and Viscosity
- 5.7. Interpretation of Master Curves
- 5.8. Shear Susceptibility
- 5.9. Tender Bitumen
- 5.10. Specification Focus
- 6. CONCLUSIONS
- REFERENCES
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