The Sonic Integrity Logging is used to detect defects in cast-in-situ bored piles, caissons, barrettes and diaphragm walls.

When cast-in-situ piles are constructed, the following defects may occur, hence the main objective in the testing is to provide the client/consultants information about the: –

1. Honeycombing due to inadequate vibration.
2. Segregation due to over vibration and improper concrete placement methods.
3. Washouts of cement due to groundwater flow.
4. Cracks in the pile shaft due to shrinkage.
5. Inclusion of foreign material causing contamination of the concrete.
6. Necking of the pile due to collapse of sidewalls during withdrawal of the temporary casings.