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Optimisation du processus d’activation thermique par calcination flash – Cas de matériaux argileux

Authors: Rojo, Amandine; Phelipot-Mardelé, Annabelle; Lanos, Christophe; Molez, Laurent;

Optimisation du processus d’activation thermique par calcination flash – Cas de matériaux argileux

Abstract

Le métakaolin, produit de cuisson du kaolin, est de plus en plus utilisé en substitution du ciment Portland pour développer des produits constructifs de performance acceptable tout en réduisant l’impact environnemental. Cette étude porte sur le kaolin activé par calcination flash. L’optimisation du procédé d’activation est envisagée en raffinant les produits crus et calcinés, et en adaptant les paramètres de cuisson. Quatre prélèvements argileux, provenant d’un même site mais de composition chimique et de distribution granulométrique différentes, sont soumis à différentes conditions de calcination. La qualité des produits de cuisson est évaluée via une caractérisation physico-chimique et des essais mécaniques réalisés sur des mortiers. L’interaction entre les conditions de cuisson, la composition et la granulométrie des produits crus, et son effet sur les propriétés mécaniques des mortiers obtenus sont identifiés. Dans le cadre de cette étude, il apparaît qu’un traitement post-calcination via un tri granulaire permet d’améliorer sensiblement les performances du produit.

Academic Journal of Civil Engineering, Vol 34 No 1 (2016): Special Issue - RUGC 2016 Liège

Country
France
Keywords

[ SPI.GCIV.CD ] Engineering Sciences [physics]/Civil Engineering/Construction durable, [SPI.GCIV.CD]Engineering Sciences [physics]/Civil Engineering/Construction durable, [ SPI.GCIV.MAT ] Engineering Sciences [physics]/Civil Engineering/Matériaux composites et construction, [SPI.GCIV.CD] Engineering Sciences [physics]/Civil Engineering/Construction durable, [SPI.GCIV.MAT]Engineering Sciences [physics]/Civil Engineering/Matériaux composites et construction, [SPI.GCIV.RHEA]Engineering Sciences [physics]/Civil Engineering/Rehabilitation, [SPI.GCIV.MAT] Engineering Sciences [physics]/Civil Engineering/Matériaux composites et construction, [SPI.GCIV.RHEA] Engineering Sciences [physics]/Civil Engineering/Rehabilitation, [ SPI.GCIV.RHEA ] Engineering Sciences [physics]/Civil Engineering/Rehabilitation

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average