The pile integrity test (PIT) is often used in piles cast in the ground and also concrete precast, to establish the variation of concrete’s quality, damage or structural failure, along the depth of foundation piles, as well as to determine and confirm the length of the pile.
This test is performed by fixing a high sensitivity accelerometer on top of the pile, with special wax oil-based. Followed by hits made with a small hammer, in order to generate small deformations.
The great advantage of the test is the daily productivity, where you can perform up to 50 tests per day.
The test is internationally recognized and standardized in several countries:
- United States (ASTM D-5882-96 – Standard Test Method for Low Strain Integrity Testing of Piles)
- France (Norme Française NFP 94-160-2; NFP 94-160-4)
- England (Specification for Piling – Institution of Civil Engineers – capítulo 11.2)
- Germany (Recommendation of DGGT to future inclusion in the DIN)
- Australia (AS2159-1995)
- China (JGJ 93-95)