Applicability of the Electrical Resistivity Tomography and Induced Polarization methods for detecting and identification of underground reinforced concrete structures was tested on an overpass foundation with three piers. Prime targets for this survey was detection and delineation of low resistivity and high phase angle difference zones, created by reinforced bars embeded in concrete structure. For the purposes of these investigations, 2 profiles laid along the piers were set up and joint resistivity and IP data was recorded and than processed. Interpreted sections give a very good results in detection and delineation on selected structure, which may provide valuable information that can be used in various engineerical applications.


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