| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Crusset, Didier
Agence Nationale pour la Gestion des Déchets Radioactifs
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (11/11 displayed)
- 2021Mechanisms of localized corrosion of carbon steel associated with magnetite/mackinawite layers in a cement groutcitations
- 2021Corrosion behavior of aluminum alloy 5754 in cement‐based matrix‐simulating nuclear waste disposal conditionscitations
- 2021Potential influence of microorganisms on the corrosion of carbon steel in the French high‐ and intermediate‐level long‐lived radioactive waste disposal contextcitations
- 2021Formation of iron sulfides on carbon steel in a specific cement grout designed for radioactive waste repository and associated corrosion mechanismscitations
- 2021Stress corrosion cracking susceptibility of P285NH and API 5L X65 steel grades in the high‐level radioactive waste repository cell conceptcitations
- 2020A study by electrochemical impedance spectroscopy and surface analysis of corrosion product layers formed during CO2 corrosion of low alloy steelcitations
- 2019Long-term corrosion behaviour of carbon steel and stainless steel in Opalinus clay: influence of stepwise temperature increasecitations
- 2017Electrochemical behaviour of non-alloy steel reinforcement in alkaline solutions
- 2017Bio-corrosion detection by sulphur isotopic fractionation measurements using nanoSIMS
- 2005Use of ion beam analysis techniques to characterise iron corrosion under water radiolysis
- 2000Thermal iodine release of surface implanted iodine in zirconia and its affect on hull disposalcitations
Places of action
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conferencepaper
Electrochemical behaviour of non-alloy steel reinforcement in alkaline solutions
Abstract
International audience ; For many countries, and taking into account the safety assessment, it is expected that high-level nuclear wastes (HLW) will be confined in deep underground repositories. For that purpose, a very thorough study was planned in order to guarantee, in first place a presence of artificial and geological barriers surrounding waste and in second, a long life and a strong resistance to corrosion of the formwork. The French concept plans to embed HLW in a glass matrix cooled in a stainless steel container (primary package). This package will be emplaced in a low-alloyed carbon steel over pack prior to being inserted in the casing, which will be inside a disposal cell, i.e. a tunnel drilled within the host rock. The over pack aims at preventing water from reaching the vitrified waste during the thermal phase (temperature T ≥ 50◦C), while the casing (also made of C-steel) has a mechanical function, as it should allow the nuclear waste to be recovered forover a century. The Callovo-Oxfordian (COx) claystone has been selected as the potential host rock for this HLW, because of its good confinement properties and low water permeability. Once the repository is closed, O2 will be consumed rapidly and anoxic conditions will prevail afterwards [1].In this work, the electrochemical behaviour of two steels grades was studied in different simulated concrete pore solutions simulating the alkaline environment of reinforcing steel rebars at 25°C. For that purpose, electrochemical measurements were performed at Ecorr or under anodic polarization in order to determine the corrosion current density of the system. These experiments were performed under anoxic conditions or in the presence of oxygen but also with or without the addition of dry concrete in the electrolyte.Under anoxic condition and without adding dry concrete, a steady state is reached after 14h of immersion and a passive layer is then formed at the steel surface. The estimation of the oxide layer thickness using the Cole-Cole approach [1] confirms ...