Research Article
Influences on Shotcrete Rebound from Walls with Random Roughness
Table 2
Orthogonal tables and range analysis results.
| Experiment no. | Surface tension (mN/m) | Viscosity (mPa.s) | Roughness (Ra, µm) | Velocity (m/s) | Spreading coefficient |
| 1 | 6.3 | 53 | 0.5 | 1 | 1.89 | 2 | 6.3 | 97 | 1.5 | 2 | 2.2 | 3 | 6.3 | 135 | 2.5 | 4 | 2.7 | 4 | 8 | 53 | 1.5 | 4 | 3.4 | 5 | 8 | 97 | 2.5 | 1 | 1.55 | 6 | 8 | 135 | 0.5 | 2 | 2 | 7 | 10.5 | 53 | 2.5 | 2 | 2.25 | 8 | 10.5 | 97 | 0.5 | 4 | 3.1 | 9 | 10.5 | 135 | 1.5 | 1 | 1.2 |
|
|