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Article dans une revue

Evidence of a gel in geopolymer compounds from pure metakaolin

Abstract : During the synthesis of geopolymer materials, all of the phenomena and reactions that occur should be included in the analysis of the synthesis. This work aims to study the role that siliceous species play in an activation solution in the presence of pure metakaolin. The formation of a gel phase during the synthesis of a K-geopolymer was shown. Different mixtures were analyzed by infrared spectroscopy. During material consolidation, there is always competition between the geopolymer network and the gel that is governed by a change in the siliceous species. The heat treatment of various gels and solids provided evidence of various networks in geopolymer materials. Finally, the change in the crystallinity of the silica in the activation solution led to a change in the kinetics of the polycondensation reactions, in agreement with previous work. © 2013 Springer Science+Business Media New York.
Type de document :
Article dans une revue
Domaine :
Liste complète des métadonnées
Contributeur : Sylvie Rossignol Connectez-vous pour contacter le contributeur
Soumis le : mercredi 23 juillet 2014 - 17:54:43
Dernière modification le : samedi 26 mars 2022 - 04:28:06

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Alexandre Autef, Elodie Prud'Homme, Emmanuel Joussein, G. Gasgnier, Stéphane Pronier, et al.. Evidence of a gel in geopolymer compounds from pure metakaolin. Journal of Sol-Gel Science and Technology, Springer Verlag, 2013, 67 (3), pp.534. ⟨10.1007/s10971-013-3111-9⟩. ⟨hal-01044610⟩



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