Study of the physical and mechanical characteristics of granite from the Somiag quarry in the urban community of Maneah (prefecture of Coyah)

Development minerals are coveted, particularly granite, for the construction of various buildings. The increase in the number of quarries and industrial granite mining sites in the country, and specifically in the urban commune of Manéah, is leading to major changes that have both environmental and civil engineering impacts. Therefore, we were interested in its quality, which led us to undertake this research, the theme of which is: "Study of the physical and mechanical characteristics of granite from the Somiag quarry in the commune of Manéah (Coyah prefecture)." The objective of this research is to identify the physical and mechanical properties in order to understand the quality of aggregates from the SOMIAG quarry. The methodological approach was based on documentary research, direct observation, and laboratory work. The characteristics of the granite were determined through a series of tests including the degree of impact of balls by Los Angeles, the micro-Deval, the specific gravity of mass water absorption, the volumetric weight, the water content to allow us to assess the quality of the granite. On five fractions of granite on which we carried out the tests, the analysis of the laboratory tests indicates the following values: LA < 30%, MDE ≤ 20, volumetric weight less than 1.60, water content is less than or equal to 1 (TE ≤ 1) and mass absorption less than 1%. These results show that the granite from the SOMIAG quarry is of good quality for civil engineering works. The results of the observation made it possible to identify considerable environmental impacts linked to the production of granite, in particular air pollution by dust in the commune of Manéah.