Research Article
Experimental Study on the High-Temperature and Low-Temperature Performance of Polyphosphoric Acid/Styrene-Butadiene-Styrene Composite-Modified Asphalt
Table 1
The results of performance tests and four component analysis of asphalt binders.
| Physical properties and chemical component | SK90 | ZH90 |
| Penetration (25°C, 0.1 mm) | 86.5 | 81.0 | Softening point (°C) | 45.5 | 46.0 | Ductility (15°C, cm) | >100 | >100 | Penetration ratio (%) | 72.0 | 70.6 | Ductility (cm) | 9.3 | 8.0 | Mass loss (%) | 0.9 | 1.0 | Performance grade (°C) | 58–22 | 58–22 | Stiffness modulus (MPa, −12°C) | 231 | 243 | Creep rate (MPa/S, −12°C) | 0.351 | 0.342 | Asphaltene (%) | 8.63 | 7.34 | Resin (%) | 17.40 | 29.28 | Aromatics (%) | 44.78 | 36.62 | Saturates (%) | 24.20 | 23.41 |
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