Research Article
Research on Rheological Properties by Desulfurized Rubber Powder/SBS Composite-Modified Asphalt and Road Performance of Its Mixture
Table 5
Coarse aggregate quality specification test results.
| | Items | 9.5∼16 mm | 4.75∼9.5 mm | 2.36∼4.75 mm | Requirements |
| | Volume relative density | 2.975 | 2.952 | 2.884 | — | | Apparent relative density | 3.026 | 3.021 | 2.953 | ≥2.6 | | Water absorption (%) | 0.57 | 0.77 | 0.81 | ≤2.0 | | Needle-like particle content (%) | 6.1 | 8.1 | — | ≤12 | | Crushing value (%) | 10.3 | — | — | ≤26 | | Particle content (<0.075 mm, %) | 0.1 | 0.2 | 0.1 | ≤1.0 | | Los Angeles attrition (%) | 10.2 | — | — | ≤28 | | Polished value (PSV) | 43 | ≥38 | | | | Soft stone content (%) | 1.0 | — | — | ≤3 | | Firmness (%) | 5.0 | ≤12 | | | | Adhesion to asphalt (grade) | 5 | — | — | ≥4 |
|
|
