| Popis: |
Concrete is widely used in different applications like bridges, tunnels, railroad crossties, etc. Assessing the damage and replacing these concrete structures in the early stages is crucial to prevent any catastrophic events. The x-ray backscatter imaging has the advantage of being single-sided imaging technique, which can be used for the non-destructive examination of the concrete structures. The x-ray radiography by selective detection and the x-ray fan beam radiography systems at the University of Florida were used for testing and comparison in order to develop an efficient and a high-resolution x-ray backscatter imaging system. GEANT4 was also used to simulate and study the feasibility of a high-speed rotating pencil beam radiography system. The backscatter images of different concrete contrast tools were produced and analyzed in this paper. |
