Research Article
Determination of Parameters of the Discrete Element Bond Model for Asphalt Mixture Based on Splitting Test
Table 3
Discrete bond model parameters of AC-13.
| | Temperature | Contact type | Stiffness | Bond strength |
| | −10°C | 2D | Contact bond model | 4.2 × 109N·m−1 | 9.0 × 102N | | Parallel bond model | 3.8 × 1012 Pa·m−1 | 3.9 × 107 Pa | | 3D | Contact bond model | 2.2 × 107 N·m−1 | 69.0 N | | Parallel bond model | 9.9 × 1012 Pa·m−1 | 1.6 × 108 Pa |
| | 0°C | 2D | Contact bond model | 1.4 × 109N·m−1 | 3.5 × 102N | | Parallel bond model | 9.8 × 1011 Pa·m−1 | 1.3 × 107 Pa | | 3D | Contact bond model | 8.2 × 106 N·m−1 | 54.0 N | | Parallel bond model | 2.8 × 1012 Pa·m−1 | 6.7 × 107 Pa |
| | 10°C | 2D | Contact bond model | 1.8 × 109N·m−1 | 1.4 × 102N | | Parallel bond model | 1.6 × 1012 Pa·m−1 | 1.4 × 107 Pa | | 3D | Contact bond model | 1.1 × 107 N·m−1 | 65.0 N | | Parallel bond model | 3.4 × 1012 Pa·m−1 | 9.2 × 107 Pa |
| | 20°C | 2D | Contact bond model | 2.1 × 109N·m−1 | — | | Parallel bond model | 1.7 × 1012 Pa·m−1 | — | | 3D | Contact bond model | 1.2 × 107 N·m−1 | 13.0 N | | Parallel bond model | 4.2 × 1012 Pa·m−1 | 2.8 × 107 Pa |
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