Application of electrical resistance tomography to damage detection in concrete

With the advantages of non-invasion, non-radiation, low-cost and high-speed, electrical resistance tomography (ERT), is a promising measurement technique in industrial process imaging. In this paper, the Electrical Resistance Tomography is applied to damage detection in concrete. The current is injected into the concrete using an array of electrodes what attached to the concrete surface, and the boundary voltages are measured using the electrodes. The image of internal damage of concrete is obtained by the suitable reconstruction algorithm. The results indicate that ERT may be a feasible modality for non-destructive evaluation of concrete.