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H2 gas production in calcium silicate hydrates: influence of water content and radiation induced defects

Jeremy Haas 1 Stéphane Esnouf 2 Jean-Philippe Renault Adeline Dannoux-Papin 1 Chengying Yin 1
1 LCBC - Laboratoire d’étude des Ciments et Bitumes pour le Conditionnement
DE2D - Département de recherche sur les technologies pour l'enrichissement, le démantèlement et les déchets
2 LRMO - Laboratoire de Radiolyse et de la Matière Organique
SECR - Service d'Etudes du Comportement des Radionucléides : DEN/DPC
Abstract : Water radiolysis is a major concern for the conditioning of radioactive waste in cement materials. Synthetic calcium silicate hydrate (CSH), the main hydrates of concrete, were synthesized with different C/S ratios and relative humidities. The samples were irradiated under γ- and electron beam irradiation. The radiolytic hydrogen production has been quantified and the radiation induced defect produced at low temperature characterized by electron paramagnetic resonance. The results show that the H production and defect production are only marginally sensitive to the relative humidity
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Submitted on : Friday, January 7, 2022 - 4:24:36 PM
Last modification on : Sunday, January 9, 2022 - 3:25:29 AM

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Jeremy Haas, Stéphane Esnouf, Jean-Philippe Renault, Adeline Dannoux-Papin, Chengying Yin. H2 gas production in calcium silicate hydrates: influence of water content and radiation induced defects. Radiation Physics and Chemistry, Elsevier, 2022, 191, 10.1016/j.radphyschem.2021.109865. ⟨10.1016/j.radphyschem.2021.109865⟩. ⟨cea-03517207⟩

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