Research on the shielding performance of concrete in a 60Co irradiation environment

Abstract

The 60Co irradiation system used in this study created a γ environmental space. A type of cylindrical concrete shielding container with a cavity was used. The ratio of γ radiation that penetrated the shielding concrete was examined and compared to the results from the straight-line penetration tests. The outcomes demonstrated that barite concrete improved the linear attenuation coefficient by 13–18% compared to normal concrete regardless of whether the environmental method or linear 60Co irradiation method was used. The environmental method was used to determine the shielding ability of concrete in three dimensions, while the linear method was used to obtain the shielding rate from γ radiation in a single direction. The environmental 60Co radiation shielding method was more consistent with the γ diffusion model of an actual nuclear engineering design. This research is beneficial to the control of γ diffusion in nuclear engineering.