Research Article
Determination of Parameters of the Discrete Element Bond Model for Asphalt Mixture Based on Splitting Test
Table 2
Discrete bond model parameters of AC-20.
| | Temperature | Contact type | Stiffness | Bond strength |
| | −10°C | 2D | Contact bond model | 2.2 × 109 N·m−1 | 1.8 × 102 N | | Parallel bond model | 1.6 × 1012 Pa·m−1 | 5.8 × 107 Pa | | 3D | Contact bond model | 2.8 × 107 N·m−1 | 72.0 N | | Parallel bond model | 3.9 × 1012 Pa·m−1 | 1.1 × 108 Pa |
| | 0°C | 2D | Contact bond model | 1.5 × 109 N·m−1 | 2.0 × 102 N | | Parallel bond model | 1.0 × 1012 Pa·m−1 | 2.0 × 107 Pa | | 3D | Contact bond model | 9.0 × 106 N·m−1 | 52.0 N | | Parallel bond model | 2.7 × 1012 Pa·m−1 | 7.5 × 107 Pa |
| | 10°C | 2D | Contact bond model | 2.3 × 109 N·m−1 | 1.3 × 102N | | Parallel bond model | 1.9 × 1012 Pa·m−1 | 1.1 × 107 Pa | | 3D | Contact bond model | 1.3 × 107 N·m−1 | 61.0 N | | Parallel bond model | 4.7 × 1012 Pa·m−1 | 1.1 × 108 Pa |
| | 20°C | 2D | Contact bond model | 1.4 × 109 N·m−1 | — | | Parallel bond model | 9.8 × 1011 Pa·m−1 | — | | 3D | Contact bond model | 1.1 × 107 N·m−1 | 10.0 N | | Parallel bond model | 3.4 × 1012 Pa·m−1 | 2.0 × 107 Pa |
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