A preliminary mineralogical and physicochemical characterization of the Neogene clays from the Timgad Basin (Massif of Aurès, NE Algeria): potential use in the manufacturing of bricks and ceramic industry
[en] This study aims at the mineralogical and physicochemical characterization of the clay formations of the Miocene age from the Timgad Basin (Massif of Aurès, NE Algeria), in order to evaluate their possible valorization, notably for their potential use in the manufacturing of bricks and ceramic industry. For this purpose, four samples were taken from a clay-dominated formation that outcrops 5 km east of the Timgad city. Each sample was collected, prepared, and analyzed by the appropriate analytical methods of characterization such as X-ray diffraction, X-ray fluorescence, and scanning electron microscopy. Moreover, other complementary analyses are performed in this study such as laser granulometry and geotechnical tests. The results of the different tests revealed that the clay formations of the Timgad Basin are non-refractory clays and characterized by medium plasticity. These clays are constituted of more than 50% of fine fraction, mainly represented by kaolinite in association with non-negligible proportions of illite, chlorite, mixed-layer clay minerals, and traces of smectite. Besides, this clayey assemblage is accompanied by some proportion of quartz and calcite, as well as traces of hematite, feldspar, and gypsum. In the light of these results and in combination with the particle size distribution, as well as the results of geotechnical tests, it is concluded that the Neogene clays of the Timgad Basin present high limits of Atterberg. Consequently, their use in the field of manufacturing of bricks and terra cotta ‘Terre Cuite’ products is subordinated to a preliminary treatment with addition of a degreasing agent, in the form of coarse sand, in order to improve their plasticity.
Disciplines :
Earth sciences & physical geography
Author, co-author :
Lamouri, Bachir ; Laboratory of Geodynamics and Natural Resources (LGRN), University of Badji Mokhtar Annaba, Sidi Ammar, Algeria ; Laboratory of Hydraulic Developments and Environment (LAHE), University of Mohamed Kheider Biskra, Biskra, Algeria
Labadi, Sedik Abdallah; Laboratory of Hydraulic Developments and Environment (LAHE), University of Mohamed Kheider Biskra, Biskra, Algeria
Boukoffa, Mechati; Laboratory of Geodynamics and Natural Resources (LGRN), University of Badji Mokhtar Annaba, Sidi Ammar, Algeria
Chouaf, Ibtissem; Laboratory of Geodynamics and Natural Resources (LGRN), University of Badji Mokhtar Annaba, Sidi Ammar, Algeria
Djouder, Hocine ; Université de Liège - ULiège > Département de géologie > Sedimentology, Cycles and paleo-Climate (SediCClim)
Djaiz, Fouad; Laboratory of Mobilization and Water Resources Management (LMGRE), University of Mustapha, Fésdis, Batna, Algeria
Bouabsa, Lakhdar; Laboratory of Geodynamics and Natural Resources (LGRN), University of Badji Mokhtar Annaba, Sidi Ammar, Algeria
Language :
English
Title :
A preliminary mineralogical and physicochemical characterization of the Neogene clays from the Timgad Basin (Massif of Aurès, NE Algeria): potential use in the manufacturing of bricks and ceramic industry
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