1National Hight School of Mining and Geology (ENSMG ex IST) Cheikh Anta Diop University of Dakar, Senegal
2UFR Sciences and Technologie, Iba Der Thiam University of Thies
3Polytechnic Institute of Saint Louis , Gaston Berger University
4LNR-BTP
American Journal of Civil Engineering and Architecture.
2025,
Vol. 13 No. 4, 109-114
DOI: 10.12691/ajcea-13-4-4
Copyright © 2025 Science and Education PublishingCite this paper: Adama DIONE, Papa Sanou FAYE, Babacar DIOUF, Cheikh Mahmoud SYLLA, Ousmane SOW, Modou MBENGUE, Lissong DIOP. The Flint: A New Alternative Material for Flexible Pavements in Senegal.
American Journal of Civil Engineering and Architecture. 2025; 13(4):109-114. doi: 10.12691/ajcea-13-4-4.
Correspondence to: Adama DIONE, National Hight School of Mining and Geology (ENSMG ex IST) Cheikh Anta Diop University of Dakar, Senegal. Email:
adama15.dione@ucad.edu.snAbstract
The objective of this work is to study flint as an alternative material for flexible pavements. Samples were taken in Mboro and identification tests were carried out. The results showed that flint has good intrinsic characteristics and good compaction behaviour. In its raw state, flint has a density value of 2.2 and a CBR of 194. When litho-stabilized with laterite, the CBR increases by 19% for a 30% flint content. In bituminous surfacing, the Marshall test gives stability values ranging from 1151 to 1350 kg and creep ranging from 2.72 to 2.24 mm. The Duriez test gives an R'c/Rc value of 0.76 and a void percentage of 7.83% at 80 rotations for the PCG test. The use of flint in hydraulic concrete paving stones provides good tensile strength, which can reach up to 5.9 MPa at 28 days depending on the cement dosage and grain size used. This makes flint an attractive material for road construction and means it can be used as an alternative material for flexible pavements in Senegal.
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