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Yoneyama, Kai*; Sato, Isamu*; Matsuura, Haruaki*; Koshigoe, Koki*; Miyahara, Naoya*; Kurihara, Norihiko*; Suzuki, Eriko; Osaka, Masahiko
no journal, ,
For the safety and rational management of radioactive concrete waste generated in the decommissioning of Fukushima-Daiichi Nuclear Power Station, we have developed the estimation technology for Cs penetration into concrete, considering the fraction/distribution of mortar and aggregate. In this work, the Cs distribution and diffusion coefficients of mortar, aggregate and concrete were evaluated by the Cs penetration tests to identify the influencing factor on Cs penetration behavior. While the distribution and diffusion coefficients of aggregate were smaller than that of mortar, the diffusion coefficient of concrete, which contained aggregates, was smaller than that of mortar. This result suggests that the existence of aggregate could significantly affect the Cs penetration behavior.
Yoneyama, Kai*; Sato, Isamu*; Matsuura, Haruaki*; Koshigoe, Koki*; Miyahara, Naoya*; Kurihara, Norihiko*; Suzuki, Eriko; Osaka, Masahiko
no journal, ,
For the rational management of radioactive concrete waste generated in the decommissioning of LWR severe accident, the influence of mortar and aggregate on Cs penetration behavior based on the Cs penetration test using mortar, aggregate and concrete. While the distribution and diffusion coefficients of aggregate were smaller than that of mortar, the diffusion coefficient of concrete, which contained aggregates, was smaller than that of mortar. This result suggests that the boundary surfaces between aggregate and mortar could affect the Cs penetration behavior.
Yamada, Kazuo*; Tojo, Yasumasa*; Tomita, Sayuri*; Aihara, Haruka; Igarashi, Go*; Hosokawa, Yoshifumi*; Maruyama, Ippei*
no journal, ,
no abstracts in English
Yamada, Kazuo*; Himori, Keita*; Tojo, Yasumasa*; Tomita, Sayuri*; Aihara, Haruka; Igarashi, Go*; Hosokawa, Yoshifumi*; Maruyama, Ippei*
no journal, ,
no abstracts in English