@article{ajcea20261411,
author={{Faye, Papa Sanou and Dione, Adama and Ndoye, Issa and Pene, Saliou and Samb, Fatou and Ciss¨¦, Ibrahima Khalil},
title={Contribution to the Geotechnical Mapping of Lateritic Gravels in Western Senegal for Road Construction in Senegal, West Africa},
journal={American Journal of Civil Engineering and Architecture},
volume={14},
number={1},
pages={1--10},
year={2026},
url={https://pubs.sciepub.com/ajcea/14/1/1},
issn={2328-3998},
abstract={Lateritic gravels (LG) constitute a strategic material for road construction in Senegal. This study aims to map and perform a geotechnical characterization of lateritic borrow pits from the Dakar and Thi¨¨s regions, in order to assess their suitability for use in sub-base and base layers of road pavements. Physical and mechanical tests were carried out on laterites from nine sites in their natural state, and after stabilization with 1%, 2%, and 3% cement. The results show that most laterites from the Dakar and Thi¨¨s regions except those from the Ngoundiane and Lam-Lam quarries, which exhibit excessive plasticity (PI > 25%) are suitable for use as sub-base materials (CBR > 30%). However, most of them do not meet the CEBTP and AGEROUTE standards for base course applications. After cement stabilization at 1%, 2%, and 3%, the CBR values range between 54% and 374.53%. Laterites from Toglou 1, Sindia, and Tchicky can be used as base course materials (CBR at 95% > 80%, and in some cases > 160%) starting from 2% cement content, while all laterites become suitable from 3% cement, except Lam-Lam, which meets specifications only at 4% cement content. Unconfined compressive strength (UCS) tests on cement treated laterites (1%, 2%, and 3%) yielded results that comply with CEBTP (1984) standards (1.8 < Rc < 3.0 MPa). In terms of tensile strength, only the Sindia, Toglou, Yeba, and Tchicky quarries met the CEBTP criterion (Rt > 0.3 MPa) after 3% cement treatment.},
doi={10.12691/ajcea-14-1-1}
publisher={Science and Education Publishing}
}