Research Article
Influence of the Chemical Composition of Asphalt and the 3D Morphology of the Aggregate on Contact Surface Adhesion
Table 4
10-level grading standard for asphalt adhesion.
| Adhesion classification | Adhesion grade | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | Stripping rate/% | ≤5 | 5~10 | 10~15 | 15~20 | 20~30 | 30~40 | 40~50 | 50~60 | 60~70 | ≥70 |
| Exfoliation description | Asphalt film is intact | Very small amount of peeling off at the edges | A small amount of exfoliation on some surfaces | The asphalt film has partially peeled off, and the exposed area of the aggregate surface is 15% to 30%. | Many asphalt films have peeled off, and the exposed area of the aggregate surface is 30% to 60% | Many asphalt films have peeled off, and the exposed area of the aggregate surface is 30% to 60% | The exposed area of the aggregate surface exceeds 70% |
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