Research Article
Material Composition Design and Anticracking Performance Evaluation of Asphalt Rubber Stress-Absorbing Membrane Interlayer (AR-SAMI)
Table 7
Conventional properties of asphalt.
| Test items | Units | Test results | Raw asphalt | Asphalt rubber | SBS-modified asphalt |
| Penetration (15°C) | 0.1 mm | 32 | 23 | 29 | Penetration (25°C) | 0.1 mm | 91 | 50 | 71 | Penetration (30°C) | 0.1 mm | 140 | 78 | 110 | PI | — | −0.2985 | 0.7330 | 0.2557 | Softening point | °C | 48.9 | 68.5 | 72.3 | Ductility (5°C) | cm | 6.4 | 17 | 29 | Elastic recovery (25°C) | % | 7.17 | 75.5 | 90.3 | Viscosity (135°C) | Pa·s | 0.327 | 3.3 | 1.968 | Viscosity (177°C) | Pa·s | — | 3.097 | 0.298 |
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