%0 Journal Article
%T Physical and Mechanical Features of the Quaternary Basanites of the Cap-Vert Peninsula of Dakar (Senegal, West Africa)
%A Moussa Sawadogo
%A D¨¦thie Sarr
%J Geomaterials
%P 124-138
%@ 2161-7546
%D 2023
%I Scientific Research Publishing
%R 10.4236/gm.2023.134009
%X This work presents the results of geotechnical tests carried out in the laboratory on specimens of Quaternary olivine basanites from the Cap-Vert peninsula of Dakar. The samples were taken following geotechnical investigations in the Fann-PE, Mermoz-Ouakam, Yoff and Ngor areas respectively. The results obtained show a dry density between 20.45 and 29.30 kN/m<sup>3</sup> which corresponds to medium to high density basanites. The porosity varies between 0.33% and 4.20%. For microlitic basanites, the porosity remains low, on the other hand, for micrograined basanites; a slight increase in porosity is noticed. As for the methylene blue adsorption test value measured, it is between 0.25 and 1.10. The uniaxial compression strength (Rc) and Young¡¯s modulus (E) vary respectively from 12.19 MPa to 41.748 MPa and from 1477.6 MPa to 7699.1 MPa. The low strength values are recorded in altered and vesicular basanites. Also, a correlation was made between uniaxial compression strength and porosity and showed a gradual decrease in strength with increasing porosity.
%K Quaternary Basanites
%K Cap-Vert Peninsula of Dakar
%K Uniaxial Compression Strength
%K Young Modulus
%K Porosity
%K Dry Density
%K The Methylene Blue Test
%U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=128468