Table 7.
Results of concrete ultrasound velocity test in borehole No. 6.
| 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 | 47.5 | 49.5 | 48.54 | 2.122 | 26.90 |
| 2 | 20.0 | 49.4 | 51.0 | 50.20 | 2.051 | 20.50 |
| 3 | 19.0 | 60.4 | 62.0 | 61.21 | 1.682 | 5.14 |
| 4 | 18.0 | 46.7 | 47.0 | 46.84 | 2.199 | 35.20 |
| 5 | 17.0 | 46.7 | 47.6 | 47.12 | 2.185 | 33.70 |
| 6 | 16.0 | 47.4 | 48.5 | 47.96 | 2.147 | 29.52 |
| 7 | 15.0 | 46.7 | 47.7 | 47.16 | 2.184 | 33.49 |
| 8 | 14.0 | 47.6 | 47.1 | 47.35 | 2.175 | 32.50 |
| 9 | 13.0 | 48.1 | 47.4 | 47.77 | 2.156 | 30.42 |
| 10 | 12.0 | 46.7 | 46.7 | 46.71 | 2.205 | 35.92 |
| 11 | 11.0 | 46.8 | 46.3 | 46.55 | 2.212 | 36.82 |
| 12 | 10.0 | 47.9 | 46.5 | 47.20 | 2.182 | 33.28 |
| 13 | 9.0 | 48.9 | 47.6 | 48.25 | 2.134 | 28.18 |
| 14 | 8.0 | 49.6 | 47.7 | 48.66 | 2.116 | 26.38 |
| 15 | 7.0 | 48.4 | 47.7 | 48.07 | 2.142 | 29.00 |
| 16 | 6.0 | 46.2 | 47.6 | 46.91 | 2.195 | 34.82 |
| 17 | 5.0 | 48.8 | 45.2 | 46.99 | 2.192 | 34.39 |
| 18 | 4.0 | 50.4 | 46.2 | 48.34 | 2.130 | 27.78 |
| 19 | 3.0 | 47.4 | 47.2 | 47.27 | 2.179 | 32.92 |
| 20 | 2.0 | 45.7 | 46.6 | 46.16 | 2.231 | 39.09 |
| 21 | 1.0 | 45.7 | 45.7 | 45.66 | 2.255 | 42.18 |