Browsing by Author "Lacaillerie, J.B.E."

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    Geopolymers from Algerian metakaolin. Influence of secondary minerals
    (2009) Zibouche, Fatima; Kerdjoudj, H.; Lacaillerie, J.B.E.
    The influence of secondary phases (illite, quartz) on the geopolymerization reaction of metakaolin has been investigated by comparing two metakaolins, one prepared from a pure kaolinite and the other from illite- and quartz-containing Algerian kaolin from the Tamazert region, respectively. Geopolymerization was achieved by mixing the metakaolins with an alkaline sodium silicate solution at room temperature and curing at 50 °C. The products were characterized by X-ray diffraction and 29Si and 27Al MAS-NMR. The results show that the secondary phases, at the concentration used in this work, do not prevent the geopolymerization reaction