| 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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Bru, Kathy
Bureau de Recherches Géologiques et Minières
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (12/12 displayed)
- 2022Characterization of a Chromium-Bearing Carbon Steel Electric Arc Furnace Slag after Magnetic Separation to Determine the Potential for Iron and Chromium Recoverycitations
- 2021Characterization of a Chromium-Bearing Carbon Steel Electric Arc Furnace Slag after Magnetic Separation to Determine the Potential for Iron and Chromium Recoverycitations
- 2020Comparative laboratory study of conventional and Electric Pulse Fragmentation (EPF) technologies on the performances of the comminution and concentration steps for the beneficiation of a scheelite skarn ore
- 2020Comparative laboratory study of conventional and Electric Pulse Fragmentation (EPF) technologies on the performances of the comminution and concentration steps for the beneficiation of a scheelite skarn ore
- 2018Investigation of lab and pilot scale electric-pulse fragmentation systems for the recycling of ultra-high performance fibre-reinforced concretecitations
- 2017Coupling simulation of mineral processing with Life Cycle Assessment to assess the environmental impacts of copper production
- 2016Improvement of the Concentration of a Low-grade Skarn Ore Containing Scheelite Using High Voltage Pulses in the Communication Circuit
- 2014Assessment of a microwave-assisted recycling process for the recovery of high-quality aggregates from concrete wastecitations
- 2013Innovative process routes for a high-quality concrete recycling.citations
- 2013Innovative process routes for a high-quality concrete recycling.citations
- 2011Innovative process routes for a high-quality concrete recycling in the aggregates and cement industries
- 2011Innovative process routes for a high-quality concrete recycling in the aggregates and cement industries
Places of action
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article
Innovative process routes for a high-quality concrete recycling.
Abstract
This study presents alternative methods for the processing of concrete waste. The mechanical stresses needed for the embrittlement of the mortar matrix and further selective crushing of concrete were generated by either electric impulses or microwaves heating. Tests were carried out on lab-made concrete samples representative of concrete waste from concrete mixer trucks and on concrete waste collected on a French demolition site. The results obtained so far show that both techniques can be used to weaken concrete samples and to enhance aggregate selective liberation (that is the production of cement paste-free aggregates) during crushing and grinding. Electric pulses treatment seems to appear more efficient, more robust and less energy consuming (1-3 kW h t−1) than microwave treatment (10-40 kW h t−1) but it can only be applied on samples in water leading to a major drawback for recycling aggregates or cement paste in the cement production process.