1st Croatian Conference on Earthquake Engineering 1CroCEE 2021

Non-destructive techniques such as ground-penetrating radar (GPR) have many benefits for the condition assessment of structures. Acquiring real-time results in a short time frame makes the inspection with GPR very effective even in the case of large areas. The inspection ensures minimal obstruction, therefore, GPR could be beneficial in cases of cultural heritage and historical buildings. By emitting electromagnetic waves into a structure, GPR detects waves reflected from the internal objects. The appropriate analysis and interpretation of results offer information about the position of reinforcement and the presence of possible structural irregularities. The identification of internal degradation due to the presence of voids, cracks, or water intrusion can also reliably be detected by GPR.
In this paper, the main principles of the GPR technique are presented. This is followed by the application of GPR for the localization of reinforcement and determination of slab geometry in the case of Faculty of Teacher Education in Petrinja.