Analysis for Location of Reinforcing Bars and Detection of Shape of Voids in Concrete Structures using Electromagnetic Radar

전자파 레이더법에 의한 콘크리트 내 철근위치 및 공동형상 해석에 관한 연구

The presence of voids under pavements or behind tunnel linings results in their deterioration. To detect these voids effectively by non-destructive tests, a method using radar was proposed. In this research, not only the detection of shape of voids, but also the location of reinforcing bars by radar image analysis is investigated. The experiments and image processing were conducted to detect voids and to locate reinforcing bars in or under concrete pavements (or tunnel linings) with reinforcing bars. From the results, the fundamental algorithm for tracing the reinforcing bars and voids, improving the horizontal resolution of the object image and detecting shape of objects, was verified.