It is quite challenging to control the quality of concrete pile foundation.
Most of the time engineers and contractors verify the strength, and consistency of pile materials by well-established and experienced process and test standards.
The defects that might have happened during the pile casting (in the case of cast-in-place piles), transportation, and installation (in the case of precast piles) can be tested and checked by Non-destructive testing.
Many different types of methods can be used to check the quality of concrete piles. Apart from general concrete tests (concrete cylinder samples, and slump test), different non-destructive testing (NDT) methods can be used to evaluate the quality and reliability of concrete piles. We can use these tests to check the integrity and quality-related issues.
The following most accepted and used NDT methods are used to check the integrity of piles:
- Low Strain Impact Integrity Testing
- Ultrasonic Cross Hole Testing for piles with the accessible tip
- Parallel Seismic for piles covered up by pile-cap
Hence, in this way, the quality control of concrete piles is done.