Research Article
Antiaging Property and Mechanism of Phase-Change Asphalt with PEG as an Additive
Table 4
Roughness of modified asphalt (nm).
| | Types of asphalt | Aging state | Rq (nm) |
| | Base asphalt | Unaged | 32.9 | | RTFOT aged | 24.2 | | PAV aged | 19.4 |
| | PEG-modified asphalt | Unaged | 14.9 | | RTFOT aged | 14.0 | | PAV aged | 12.5 |
|
|
