Research Article
Gradation Design and Performance Evaluation of High Viscosity Asphalt Mixtures
Table 3
Performance of high viscosity asphalt binder.
| | Parameters | Unit | HVA with NRA modifier | Standard criteria [23] | | 10% | 15% | 20% |
| | Penetration (100 g, 5 s, 25°C) | 0.1 mm | 66 | 64 | 62 | 30–60 (SM asphalt) | | Ductility (5 cm/min, 15°C) | cm | 6.4 | 7.6 | 8.1 | ≮20 (SM asphalt) | | Softening point | °C | 51.0 | 68.5 | 74.5 | ≮60 (SM asphalt) | | Mass loss after RFOT | % | 0.02 | 0.05 | 0.02 | — | | Penetration ratio after RFOT (25°C) | % | 78.2 | 78.8 | 86 | — | | Viscosity (60°C, 27, 100 RPM) | Pa·s | 2,617 | 3,050 | 3,393 | >3,000 (HVA of Japan) | | Elastically recovery rate (25°C) | % | 19.0 | 29.0 | 34.0 | ≮75 (SM asphalt) |
|
|
