IJCRAR is now DOI (CrossRef) registered Research Journal. The DOIs are assigned to all published IJCRAR Articles.

INDEXED IN INDEX COPERNICUS - ICI Journals Master List 2016 - IJCRAR--ICV 2016: 81.15 For more details click here

Abstract            Volume:10  Issue-7  Year-2022         Original Research Articles

Online ISSN : 2347 - 3215
Issues : 12 per year
Publisher : Excellent Publishers
Email : editorijcret@gmail.com

Valorization of Clay Soils from Traditional Quarries in the City of ATI (CHAD) for use as Fired Bricks
Al-hadj Hamid Zagalo1*, Pierre Rochette2 and Tamba Guindja Wilfried3
1University of Science and Technology of Ati, Faculty of Life Sciences, Earth Sciences and Land Management, Ati, Chad
2University of Aix Marseille, CEREGE, Aix en Provence, France
3University of N'Djamena, Faculty of Exact and Applied Sciences, N'Djamena, Chad
*Corresponding author

This paper deals with the clay materials of the city of Ati, chief town of the Batha Province. The aim of this study is to determine the geotechnical characteristics and mineralogical composition of clays for their use as fired bricks. For this purpose, various methods and means of identification were used, including: grain size, Atterberg limits, density parameters, compressive strength and mineralogical and geochemical analyses. The macroscopic description of the soils in the study area shows that almost all of these soils are clayey materials, with a gray, black, light gray, mottled and yellowish color, but we also note the presence of silts. It emerges from the geotechnical characterization that the materials of the quarries of the city of Ati are fine soils with an average percentage of 60% of passers by the sieve of 80µm. According to the GTR classification, these soils belong to the class of clay soils type A and have a low plasticity to plastic behavior according to the values of the plasticity index (12.2 to 23%). The values of the density of the solid grains vary from 2.17 to 2.30g/cm3 with an average of 2.23g/cm3. These values indicate that the density of the studied soils is medium and the particles are moderately compacted. The compressive strength of the mud bricks increases with traditional firing. From 2.1 to 2.8 MPa for unfired bricks, it increases from 2.8 to 4.8 MPa for fired bricks. Mineralogical analysis showed that the soils in the study area are composed mainly of quartz and a clayey mixture of kaolinite, smectite and illite with a predominance of kaolinites in most of the samples analyzed. The geochemistry is characterized by the dominance of potassium over calcium and the relative abundance of elements related to granitic detritic minerals: titanium, zirconium. This characterization shows that the soils of the quarries of the city of Ati are favorable for the manufacture of quality bricks, briquettes and even tiles and other ceramic objects.

Keywords: Traditional valorization, geotechnics, clay materials, fired bricks, Ati, Chad.
Download this article as Download

How to cite this article:

Al-hadj Hamid Zagalo, Pierre Rochette and Tamba Guindja Wilfried. 2022. Valorization of Clay Soils from Traditional Quarries in the City of ATI (CHAD) for use as Fired Bricks.Int.J.Curr.Res.Aca.Rev. 10(7): 42-51
doi: https://doi.org/10.20546/ijcrar.2022.1007.002
Copyright: This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike license.