Piles are essential in deep foundations, in addition to their indisputable role as a support element, the construction of this type of foundation represents significant efforts and costs over the total amount of any civil works, so the need to evaluate its conditions in situ , through integrity tests that do not affect its structure, is imperative. The best alternatives correlate geophysical and geotechnical methods to achieve the objectives.
Considerations Standard ASTM-D5882:
We adhere the accelerometer to the pile using a hot wax or similar, it is connected to the equipment console, the pile data is entered (identification, length, diameter, concrete speed), the hammer is positioned and the impacts are applied. This process is repeated in each of the piles to be studied.
The PIT test determines the condition of the pile in terms of its continuity, changes in dimensions and consistency of the material. The hammer blow must be carried out axially and perpendicular to the surface of the pile head. The PIT test applies to any deep foundation pile. Installation method does not matter.
For each tested pile, the velocity profile and the impedance profile of the measured signals will be provided. Significant variations in the velocity and impedance profiles show discontinuities or important reductions in the cross section of the pile, where damage to the pile is possibly found. From these profiles, a classification of the quality of the tested piles will be given.
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