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Parameters of the specimens.
| Specimen No. | Wave Velocity in Steel Bolt (m/s) | Steel Bolt Diameter (mm) | Steel Bolt Length (mm) | PVC Pipe Diameter (mm) | Concrete Class | Defect Location (mm) |
|---|---|---|---|---|---|---|
| 1 | 5100 | 30 | 3700 | 100 | C30 | 3100 |
| 2 | 5100 | 30 | 6000 | 100 | C30 | 1800 and 4100 |
