Sorption behavior of alpha-ray emitting nuclides on concrete in contact with radioactive contaminated water

Aihara, Haruka   ; Hinai, Hiroshi; Shibata, Atsuhiro  ; Tomita, Sayuri*; Koma, Yoshikazu  

Pu and Am contained in the contaminated water at Fukushima Daiichi Nuclear Power Station is concerned to contaminate inside the buildings concrete. To understand or estimate the state of contamination, investigation on contamination mechanisms have become quite important. Therefore, the distribution ratio of Pu and Am to cement paste and aggregates was obtained by experiments. Cement paste and aggregate were immersed in Pu and Am solution to obtain distribution ratio. Those of Pu and Am to cement paste was high values, suggesting that they have sorbed and accumulated in the building concrete.