| 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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Courtois, Nicolas
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (12/12 displayed)
- 2024Tribocorrosion behaviour of additively manufactured β-type Ti–Nb alloy for implant applications
- 2024Machine learning-guided exploration and experimental assessment of unreported compositions in the quaternary Ti-Zr-Cu-Pd biocompatible metallic glass systemcitations
- 2023Tribocorrosion behavior of β-type Ti-Nb-Ga alloys in a physiological solutioncitations
- 2022Impact of spherulite-type crystalline defects on the mechanical and electrochemical properties of Ti(40)Cu36Zr(10)Pd(14) metallic glassescitations
- 2022Quantification of the extent of alkali-silica reaction occurring in cemented waste packages based on simplified model systems
- 2022Study of alkali-silica reaction occurring in cemented waste packages based on simplified model and concrete medium approaches
- 2022Study of alkali-silica reaction occurring in cemented waste packages based on simplified model and concrete medium approaches
- 2020Phase transformation induces plasticity with negligible damage in ceria-stabilized zirconia-based ceramicscitations
- 2020Effect of alloying elements on the microstructure and corrosion behavior of TiZr-based bulk metallic glassescitations
- 2020Study of alkali-silica reaction occuring in concretes designed for evaporator concentrates immobilization
- 2019Phase transformation induces plasticity with negligible damage in ceria-stabilized zirconia-based ceramicscitations
- 2018On the Potential of Bulk Metallic Glasses for Dental Implantology: Case Study on Ti40Zr10Cu36Pd14citations
Places of action
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document
Quantification of the extent of alkali-silica reaction occurring in cemented waste packages based on simplified model systems
Abstract
Nuclear power production generates radioactive waste, the management of which is an important industrial and environmental issue. Low - or intermediate - level radioactive aqueous waste can be concentrated by evaporation, stabilized and solidified with Portland cement before being sent to disposal. Interactions can however occur between the waste and the cement phases or aggregates, and decrease the stability of the final waste forms. The formation of a gel-like product, which results from an alkali-aggregate reaction, has been recently observed at the surface of cemented drums of evaporator concentrates. Its properties differ however from those usually reported for alkali-silica gels: (i) very low calcium concentration, (ii) significant presence of Zn2⁺, Cl⁻, B(OH)4⁻ and SO42⁻ ions, (iii) high formation rate, (iv) rather limited damage of the cementitious matrix considering the amount of gel produced. This work investigates the progress of alkali-silica reaction in the cemented drums at early age, by studying the deterioration rate of the aggregates in model systems. A synthetic alkaline solution, which mimics the pore solution including the waste, was used to degrade the siliceous aggregates under controlled conditions. Determination of the extent of degradation caused by alkali-silica reaction was achieved by weighing the residual flint aggregates and by quantifying their deterioration state by 29Si NMR, BET and gas pycnometry.