Investigation of Concrete Internal Structures With GPR Method

In this study, during the maintenance of part at the basement of the Department of Geophysical Engineering of the Technical University of Karadeniz, during the maintenance of, It is aimed to investigate by means of the Ground Radar (GPR) method to shows that the damaged reinforcing bar observed in the ceiling continue in the structure. For this, data were collected using 2.7 GHz antenna. After applying the necessary data processing steps to these data, various migration techniques have been applied to move the correct positions of the scattered hyperbole, which is a symptom of reinforcing bars. From the obtained results; from the view of the radargrams obtained from the data collected from the building structure ceiling; hyperbolas are observed at the 20, 50, 70 cm and 1 meter. While hyperbolas are concentrated to more scattering points, when obtained this radargram is applied stolt migration, in kirchhoff migration, hyperbols are also gathered to a scattering point less and deteriorations are more observed in the structure. Furthermore, amplitude-slice maps composed of selected profiles in directions parallel to each other was evaluated. From all these results, suggestions for repair were made by locating solid and damaged parts of reinforcing bar.