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Application of gamma ray scattering technique for non-destructive evaluation of voids in concrete |
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| Affiliation: | 1. Helmholtz-Zentrum Berlin GmbH, Institut für Angewandte Materialforschung, Hahn-Meitner-Platz 1, 14109 Berlin, Germany;2. Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research, IEK-3: Electrochemical Process Engineering, 52425 Jülich, Germany;3. Bundesanstalt für Materialforschung und -prüfung, 12205 Berlin, Germany;4. Faculty of Mechanical Engineering, RWTH Aachen University, Germany;1. Department of Radiological Science, Konyang University, 158 Gwanjeodong-ro, Daejeon, South Korea;2. Department of Radiological Science, Eulji University, 553, Sanseong-daero, Seongnam-si, Gyeonggi-do, South Korea |
| Abstract: | This paper describes application of the gamma ray scattering technique for NDE of concrete voids. A novel nonlinear extrapolation method is employed to correct for self-absorption and multiple scattered intensities. The attenuation data obtained from transmission method is employed for reconstruction of scattered images and the results show a good agreement in size and position of the voids with good spatial resolution. Intercomparison of the results of scattering and transmission techniques shows a good agreement in the position of the voids. |
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