Cs penetration behavior into concrete structure of reactor building

Koshigoe, Koki*; Sato, Isamu*; Hagura, Naoto*; Miyahara, Naoya*; Suzuki, Eriko   ; Osaka, Masahiko  ; Matsuura, Haruaki*

For the waste management of radioactive concrete in the Fukushima Daiichi Nuclear Power Station, the analysis technology of Cs penetration behavior into concrete was developed. In this study, samples of small-scale leaching tests into CsI or CsCl dissolved water solution were subjected to the PIXE. The results of PIXE show that the Cs penetration depth and the change of Cs concentration with the content of aggregates can be obtained, which indicates that the PIXE measurement was useful for the samples with dilute concentration.