Concrete Investigation
Concrete investigations with GPR are carried out in order to detect rebars and inhomogeneities. Therefore high frequency antennas in the Gigahertz range are applied that allow determination of detected structures with a very high accuracy.
1,5 GHz radar dataset from a concrete investigation. The red arrows point at the signals from the individual rebars
Time-slice (depth 4 cm) from a 3-D investigation. Rebars are showed in blue, areas of a higher concrete coverage (sagged rebars) are excellent distinguishable (green areas)
Compared to other methods the great advantage of GPR is the capability of high-resolution-surveying large areas in a relative short time.
GPR is applied as well in the domain of quality assurance as in the evaluation of old constructions.