Cases Study about Corrosion Analysis in Structures

Corrosion appears in many structures because iron and steel have been used throughout history to reinforce buildings and structures. GPR is a suggested NDT tool to detect the damage in the early stages, before the appearance of cracks on the surface of structural elements. The effects of corrosion on radar images are usually an important decrease in the amplitude of the reflected wave. In some cases, the anomaly even disappears, and the target cannot be detected. Another effect, most likely associated with the increase of water content in the medium is a lower wave velocity (obtaining higher travel times.