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Communication dans un congrès

Development of an Innovative Technique for Demolition Concrete Up-cycling : a Response to Mitigate GHG's Emissions and Natural Resources Depletion

Abstract : The present study describes a high-voltage pulsed-power process of concrete fragmentation which enables to recover clean aggregates and hydrated cement paste (HCP). This HCP conveys valuable elements - Ca, Si, Fe, Al - that would potentially reduce energy and natural resources consumption as well as CO2 emissions of the clinker making process, if it were introduced in the raw mix of the clinker kiln. Overall environmental benefits of this up-cycling chain depend on the mineralogical composition of the cement paste, which in turn depends on the operational conditions of the concrete fragmentation process. To date, only scarce data are available to assess this recycling scheme. In this framework, our study tackle the subject by putting forward an experimental investigation of the pulsed-power process, coupled with a calculation methodology to assess the environmental benefits associated with the recycling of the obtained hydrated cement paste in clinker manufacturing. The proposed methodology leads the way to a comprehensive environmental assessment of concrete recycling schemes, based on a forthcoming LCA study that will make use of the results presented.
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https://hal-brgm.archives-ouvertes.fr/hal-00714422
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Soumis le : mercredi 4 juillet 2012 - 14:48:57
Dernière modification le : lundi 15 juin 2020 - 10:50:23
Archivage à long terme le : : jeudi 15 décembre 2016 - 21:05:30

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Sylvain Guignot, Yannick Menard, Solène Touzé, Kathy Bru. Development of an Innovative Technique for Demolition Concrete Up-cycling : a Response to Mitigate GHG's Emissions and Natural Resources Depletion. International Mineral Processing Congress (IMPC 2012), Sep 2012, New Delhi, India. ⟨hal-00714422⟩

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