Research Article
Pavement and Noise Reduction Performance of Open-Graded Asphalt Friction Course Improved by Waste Tire Crumb Rubber
Table 2
Performance index of 70# asphalt.
| Items | Softening point/°C | Penetration (25 °C,5s,100 g)/(0.1 mm) | Ductility (10 °C)/cm | Viscosity (135 °C)/(Pa·s) |
| Test results | 61.4 | 65.6 | 35.2 | 0.27 | Requirements | >46 | 60–80 | >20 | — |
|
|