An experimental study on the corrosion amount in RC structures by eddy current heating

This paper presents a proof-of-concept experimental demonstration of the eddy heat imaging (EHI) estimation. The EHI estimation has the ability to provide an on-site measurement of the corrosion amount rather than corrosion rate in reinforced concrete (RC) structures without destruction. In the experiment, the relation between the surface temperature and the corrosion amount is investigated by means of a combination of eddy current and infrared (IR) imaging techniques. Preliminary results show that the EHI method is a promising approach for the quantitative measurement of the corrosion amount in RC structures.