[2C10-13] Dismantling Technology for Contaminated Concrete

[2C12] Evaluation of decommissioning and waste management strategies for contaminated concrete structures

(9) Sorption behavior of radionuclides on altered hardened cement paste

*kei kitazawa¹, Naohumi Kozai³, Kazuya Tanaka³, Iwao Shimoyama³, Tamotu Kozaki², Naoko Watanabe², Shingo Tanaka² (1. Graduate School of Engineering Hokkaido, 2. Facurity of Engineering Hokkaido University, 3. Japan Atomic Energy Agency)

Keywords:Fukushima Daiichi Nuclear Power Plant, Hardened cement paste, Heat alteration, Leaching, Sorption, Uranium

福島第一原子力発電所の事故時に高温に曝され、その後長期間汚染水と接し変質したコンクリート材料を模擬した硬化セメントペースト試料に対してバッチ式収着試験を行い、放射性核種の収着挙動を検討した。