Table 8.
Results of concrete ultrasound velocity test in borehole No. 7.
| Ordinal Number | Height from the Bottom of the Floor (cm) | Ultrasound Netto Passing Time in Direction I-I tn I-I (µs) | Ultrasound Netto Passing Time in Direction II-II tn II-II (µs) | Mean Ultrasound Netto Passing Time tn (µs) | Ultrasound Wave Velocity CL (km/s) | Concrete Compression Strength fc (MPa) |
|---|---|---|---|---|---|---|
| 1 | 21.0 | 47.0 | 55.0 | 51.00 | 2.950 | 39.50 |
| 2 | 20.0 | 55.5 | 54.9 | 55.20 | 2.726 | 33.94 |
| 3 | 19.0 | 79.0 | 79.2 | 79.10 | 1.902 | 13.53 |
| 4 | 18.0 | 59.0 | 59.4 | 59.20 | 2.541 | 29.38 |
| 5 | 17.0 | 59.9 | 59.2 | 59.55 | 2.526 | 29.01 |
| 6 | 16.0 | 60.6 | 59.4 | 60.00 | 2.508 | 28.54 |
| 7 | 15.0 | 58.5 | 58.6 | 58.55 | 2.570 | 30.07 |
| 8 | 14.0 | 59.2 | 58.8 | 59.00 | 2.550 | 29.59 |
| 9 | 13.0 | 60.0 | 58.1 | 59.05 | 2.548 | 29.54 |
| 10 | 12.0 | 57.9 | 58.0 | 57.95 | 2.596 | 30.73 |
| 11 | 11.0 | 58.6 | 59.4 | 59.00 | 2.550 | 29.59 |
| 12 | 10.0 | 59.9 | 58.6 | 59.25 | 2.539 | 29.32 |
| 13 | 9.0 | 58.8 | 59.0 | 58.90 | 2.554 | 29.70 |
| 14 | 8.0 | 61.3 | 58.3 | 59.80 | 2.516 | 28.74 |
| 15 | 7.0 | 61.0 | 59.0 | 60.00 | 2.508 | 28.54 |
| 16 | 6.0 | 58.0 | 58.8 | 58.40 | 2.576 | 30.24 |
| 17 | 5.0 | 56.6 | 58.3 | 57.45 | 2.619 | 31.29 |
| 18 | 4.0 | 75.8 | 64.0 | 69.90 | 2.152 | 19.74 |
| 19 | 3.0 | 60.9 | 44.0 | 52.45 | 2.868 | 37.48 |
| 20 | 2.0 | 52.3 | 52.3 | 52.30 | 2.877 | 37.68 |
| 21 | 1.0 | 52.0 | 51.4 | 51.70 | 2.910 | 38.51 |