Research Article
Research on Rheological Properties by Desulfurized Rubber Powder/SBS Composite-Modified Asphalt and Road Performance of Its Mixture
Table 1
The basic properties of SK 90# virgin asphalt.
| Items | Value | Requirements |
| Penetration (25°C, 0.1 mm) | 89 | 80∼100 | Penetration index | −0.6 | −1.5∼+1.0 | Ductility (10°C, cm) | >100 | ≥20 | Softening point (°C) | 46.0 | ≥45 | Viscosity (60°C, Pa·s) | 162.9 | ≥160 | Flash point (°C) | 294.3 | ≥245 | Solubility (%) | 99.97 | ≥99.5 | Density (15°C, g/cm3) | 1.032 | Measured | Aged asphalt (TFOT) | Loss on heating (%) | −0.512 | ≤±0.8 | Penetration ratio (%) | 59.9 | ≥57 | Ductility (10°C, cm) | 9 | ≥8 |
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