Radar-based detection and estimation of reinforcement elements and degree of corrosion

Abstract

Corrosion is a process that takes place when essential properties within a given material begin to deteriorate, after exposure to elements that recur within the environment. Radar-based detection has tended to provide unpredictable accuracy in estimating areas of corrosion-induced damage in reinforced concrete structures. This study examines and compares the efficiency of two NDT approaches, the ground penetrating radar (GPR) and the digital half-cell method, for their effectiveness in detecting the location of corroded steel, estimating the different levels of corrosion, and detecting the damaged zones of embedded pre-corroded reinforcement bars in concrete samples.