Research Article
Performance Evaluation of Crumb Rubber Asphalt Modified with Silicone-Based Warm Mix Additives
Table 1
Basic properties of penetration grade 70# base asphalt used herein.
| Test parameters | Specification | Test results |
| Penetration (25°C, 100 g, 5 s) (0.1 mm) | 60–80 | 68.9 | Ductility (5 cm/min, 15°C) | 40 | 67 | Softening point (°C) | 46 | 46.3 | Flash point (°C) | 230 | 262 | Density (g/cm3) | — | 1.03 | Solubility in trichloroethylene (%) | 99.5 | 99.8 | RTFOT mass change (%) | 0.8 | 0.3 | Retained penetration (%) | 58 | 78 | Ductility (15°C) (cm) | 15 | 44 |
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