SONIC

Objective of the test:To determine the integrity of bored pile/barrette/diaphragm walls/mass concrete structures based on sonic logs and wave speed measured

 Method of testing:Logging the energy and the time the ultrasonic travels in the concrete between a transmitter and a receiver emerged in water in tubes already installed in the structures

 Standards for the test:According to the specific method statement of manufactures or following the Engineer's instructions

 Steps to be followed for the test:

1. Check the tubes if are full of water and obstructions

2. Drop both transmitter and receiver to the end of tubes

3. Turn on the equipment and enter parameters

4. Test the signal

5. Pull the sensors at constant rate

6. Scan the signal to have graphs

7. Check the graphs and redo the test at possible defect location

8. Do the same with other pair of tubes until finished necessary cross sections

9. Move to other piles

 Report, which includes:

1. Project name and location

2. The owner, designer, piling contractor and the tester

3. Tested pile records

4. Summary table of test results

5. Sonic logs and wave speed graphs against pile depth

6. Conclusion and recommendation for the defect piles