Physical characterization of clayey materials from tertiary volcanic cones in Limbe (Cameroon) for ceramic applications

Diko, Makia L.; Ekosse, Georges‐Ivo E.; Ayonghe, Samuel N.; Ntasin, EB

doi:10.1016/j.clay.2010.11.034

Cited by 43 publications

(27 citation statements)

References 15 publications

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“…The lowest percentage clay (13-16%) occurred in N213 and N215 which are among the most silty samples (silt: 57-63.5%). The PSD could be indicative of the ceramic strength of any clay material [34][35][36]. Plotted in PSD ternary diagram (Fig.…”

Section: Physical Properties Of Raw Materials and Characters Of Firedmentioning

confidence: 99%

“…N713 and N412 have high amount of clay-sized fraction which may induce suitable technological features according to the mineralogical composition and particle size distribution [40]. These samples need to be mixed with low clay content materials (e.g., N215 and N213) which are high in silt, important to produce hollow bricks or roof tiles and light weight blocks [36]. The results are similar to those of clay products on Tertiary volcanic cones in Limbe (Cameroon) which are good raw materials in ceramic industry.…”

Section: Physical Properties Of Raw Materials and Characters Of Firedmentioning

confidence: 99%

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The Ndop plain clayey materials (Bamenda area – NW Cameroon): Mineralogical, geochemical, physical characteristics and properties of their fired products

Yongue-Fouateu

Ndimukong

Njoya

et al. 2016

Journal of Asian Ceramic Societies

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a b s t r a c tThe physicochemical, mineralogical and technological properties of clayey materials from the Ndop plain (NW Cameroon) have been investigated, for their ceramic applications. The clayey materials have mixed facies with colour ranging from brown, grey, mottled and yellowish brown. The thickness of the exploitable clay layer is more than 5 m. Their mineralogical constituents are quartz, kaolinite, illite and feldspars, with kaolinite as major clay mineral. Based on the geochemistry, their source rocks might be felsic, with a mafic rock inference. These materials display high percentage in fine particles and high Atterberg limits. For all the firing temperatures, flexural strength (1.2-11 MPa), water absorption (8.03-24.27%), linear shrinkage (2.10%), weight loss (4.88-16.54%) and bulk density (1.57-2.03 g/cm 3 ) indicate good ceramic properties for firing samples between 900 and 1100 • C. Most of the fired test bricks show a brick red colour with good to very good cohesion. The studied clays were thus, suitable as raw materials for roof tiles, light weight blocks and hollow bricks; however, mixing of high clayey and highly silty materials could improve the quality of the products.

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Section: Physical Properties Of Raw Materials and Characters Of Firedmentioning

confidence: 99%

Section: Physical Properties Of Raw Materials and Characters Of Firedmentioning

confidence: 99%

The Ndop plain clayey materials (Bamenda area – NW Cameroon): Mineralogical, geochemical, physical characteristics and properties of their fired products

Yongue-Fouateu

Ndimukong

Njoya

et al. 2016

Journal of Asian Ceramic Societies

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“…For this purpose, proper characterization of the raw materials is necessary in order to improve product quality. This is why many studies are being conducted on clay characterization [8][9][10][11][12][13][14]. The need to properly characterize the available materials, in order to conveniently define the possible enduses of the raw materials or to improve quality of products derived from these resources is still of importance given that each deposit has a unique chemical and mineralogical feature.…”

Section: Introductionmentioning

confidence: 99%

Mineralogy and preliminary assessment of the potential uses of alluvial clays from Batouri (Eastern-Cameroon)

et al. 2019

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This study aimed at assessing the potential uses of alluvial clayey materials from Batouri. Their mineralogical, chemical and some physicomechanical characteristics are presented with some characteristics of fired bricks at 900, 950, 1000, 1050 and 1100 °C. The raw materials consisted of kaolinite, quartz, K-feldspars, anatase, and goethite. The phases formed during the firing process were mullite, quartz, hematite, and anatase. The linear shrinkage increased with firing temperature and remained <12% while water absorption decreased and remained <25%. Flexural strength increased due to the formation of dense phases (especially mullite) and, except for one sample, was at least 2 MPa. The SEM micrographs showed cracks that accounted for overall moderate mechanical responses. For firing above 1000 °C, the flexural strength of the three samples makes them usable as raw materials for roofing tiles manufacturing if the convenient amendment is done. The overall properties highlighted that all the studied materials are usable for brick manufacturing.

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“…There are huge studies that develop the clays characterization used for ceramic products (e.g., Ibrahim et al, 2004;Monteiro and Vieira, 2004;Lisboa et al, 2007;Dondi et al, 2008;Mahmoudi et al, 2008;Meseguer et al, 2010;Diko et al, 2011). In addition, many researches deal with the transformations of clay materials by firing.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous Optimisation of Drying Parameters of Ceramic Bodies

Mahmoudi¹,

Srasra²,

Zargouni³

2014

American Journal of Geoscience

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This study deals with the mineralogical, physico-chemical and geotechnical analyses of representative Aptian clays in the north-east of Tunisia. X-ray diffraction reveals a predominance of illite (50-60 wt.%) associated to kaolinite and interstratified illite/smectite. The accessory minerals detected in raw materials are quartz, calcite and Na-feldspar. The average amounts of silica, alumina and alkalis are 52, 20 and 3.5 wt.%, respectively. The contents of lime and iron vary between 4 and 8 wt.%. Physical analyses show that the cation exchange capacity is 34.1-45.7meq/100g of air-dried clay. The plasticity test shows medium values of plasticity index (16-a28 wt.%). The linear drying shrinkage is weak (less than 0.99 wt.%) which makes these clays adapt to fast drying. The firing shrinkage and the expansion are limited. A lower firing and drying temperature can be translated into significant energy savings. Currently, these clays are used in the industrial process for the manufacturing of the earthenware tiles. For the better exploitation of the materials and improvement of production conditions, a mathematical formalism is established for the drying parameters. The regression models relate drying shrinkage (d), bending strength after drying (b) and residual moisture (r) with the moisture (m) and the pressing pressure (p).

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Physical characterization of clayey materials from tertiary volcanic cones in Limbe (Cameroon) for ceramic applications

Cited by 43 publications

References 15 publications

The Ndop plain clayey materials (Bamenda area – NW Cameroon): Mineralogical, geochemical, physical characteristics and properties of their fired products

The Ndop plain clayey materials (Bamenda area – NW Cameroon): Mineralogical, geochemical, physical characteristics and properties of their fired products

Mineralogy and preliminary assessment of the potential uses of alluvial clays from Batouri (Eastern-Cameroon)

Simultaneous Optimisation of Drying Parameters of Ceramic Bodies

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