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

Abstract This study aims at the mineralogical and physicochemical characterization of clay formations Miocene age from Timgad Basin (Massif Aurès, NE Algeria), in order to evaluate their possible valorization, notably for potential use manufacturing bricks ceramic industry. For this purpose, four samples were taken a clay-dominated formation that outcrops 5 km east city. Each sample was collected, prepared, analyzed by appropriate analytical methods such as X-ray diffraction, fluorescence, scanning electron microscopy. Moreover, other complementary analyses are performed laser granulometry geotechnical tests. The results different tests revealed non-refractory clays characterized medium plasticity. These constituted more than 50% fine fraction, mainly represented kaolinite association with non-negligible proportions illite, chlorite, mixed-layer minerals, traces smectite. Besides, clayey assemblage is accompanied some proportion quartz calcite, well hematite, feldspar, gypsum. In light these combination particle size distribution, tests, it concluded Neogene present high limits Atterberg. Consequently, field terra cotta ‘Terre Cuite’ products subordinated preliminary treatment addition degreasing agent, form coarse sand, improve Article Highlights Mineralogical properties have been investigated. studied ideal composition thus making them applicable Addition sand will greatly plasticity raw materials.