Electromagnetic evaluation of reinforced concrete structure

The purpose of this paper is to present the new electromagnetic system for detection and evaluation of steel bars in reinforced concrete structures. A differential eddy current transducers and system with lock-in amplifier are proposed for this purpose. Studies show that, the shape of output voltage module signal provides information about main parameters of reinforcement. Selected Data Mining algorithms are used to search associations between output waveform and diameter, location and steel class of rebars. The experimental verification of the developed technique is done and the selected, promising results are presented.