References of "Njoya, André"
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See detailDonnées préliminaires sur les argiles de Foumban (Ouest-Cameroun)
Nkalih Mefire, Abiba ULg; NJOYA, André; YONGUE FOUATEU, Rose et al

Poster (2014, October 28)

En vue de la valorisation des matériaux argileux dans la fabrication de produits de terre cuites (briques, poteries, tuiles), deux sites d’argiles alluviales (site S1 Bangouren, site S2 Koutoukpi) situés ... [more ▼]

En vue de la valorisation des matériaux argileux dans la fabrication de produits de terre cuites (briques, poteries, tuiles), deux sites d’argiles alluviales (site S1 Bangouren, site S2 Koutoukpi) situés à une trentaine de kilomètres de Foumban (Ouest- Cameroun) ont été échantillonnés. Nous présentons ici la caractérisation minéralogique par diffractométrie aux rayons X ainsi que la composition chimique en éléments majeurs par spectrométrie de fluorescence de 6 échantillons (4 dans le site S1 et 2 dans le site S2). [less ▲]

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See detailIndice de Kaolin à Koutaba (Ouest - Cameroun):
Nkalih Mefire, Abiba ULg; NJOYA, André; Mache, Jacques-Richard et al

Conference (2014, October 28)

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See detailMineralogy and physico-chemical properties of alluvial clays from
Nzeugang Nzeukou; Fagel, Nathalie ULg; Njoya, André et al

in Applied Clay Science (2013), 83-84

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See detailMineralogy and physico-chemical properties of alluvial clays from Sanaga valley (Center, Cameroon): Suitability for ceramic application,
Nzeukou, Aubin; Fagel, Nathalie ULg; Njoya, André et al

in Applied Clay Science (2013), (83-84), 238-243

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See detailMineralogical and Chemical Characterizations of Natural Clays from NW Cameroon
Mache, Jacques Richard ULg; Fagel, Nathalie ULg; Njoya, André

Poster (2012, June)

In this study physical and chemical characterization of seven clay samples from Cameroon is reported. The various analysis show that the main clay mineral in all samples is smectite with a small amount of ... [more ▼]

In this study physical and chemical characterization of seven clay samples from Cameroon is reported. The various analysis show that the main clay mineral in all samples is smectite with a small amount of kaolinite; some non clay minerals as cristobalite, K-feldspars, plagioclase, ilmenite and quartz are also present. The Cation Exchange Capacities range from 24.2 to 62.0 meq/100g. The specific surface area range from 58 to 123 m2/g. The chemical composition of the clays is dominated by SiO2, Al2O3 and Fe2O3 whereas MgO and Na2O are present only in small quantities. [less ▲]

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