[ Évaluation du module des graveleux latéritiques non traités à partir des courbes effort-déformation de l’essai CBR ]
Volume 36, Issue 3, June 2022, Pages 813–817
Massamba Ndiaye1, Jean-Pierre Magnan2, and Lamine Cissé3
1 École Supérieure Polytechnique (ESP) de Dakar - BP 5085, Dakar-Fann, Dakar, Senegal
2 Institut Français des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux (IFSTTAR), 14-20 Boulevard Newton - 77447 Marne-la-Vallée Cedex 2, France
3 Agence des travaux et de Gestion des Routes (AGEROUTE), Rue F x David Diop, Fann Résidence, BP 25 242, Dakar, Senegal
Original language: French
Copyright © 2022 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Natural lateritic gravels are the most frequent materials in French-speaking subtropical Africa and the most used for the construction of road infrastructures. However, some difficulties are often noted in practice, in the dimensioning phase, on the choice of the modulus of these materials which is often done using the empirical relation E = 5 * ICBR of CEBTP. The results obtained within the framework of the present study suggest that this relation gives modulus values higher than those obtained by exploiting the linear parts of the curves stress-strain CBR. This would lead to undersizing the pavement by applying this relationship.
Author Keywords: dimensioning, pavement, modulus, stress-strain curve, CBR test.
Volume 36, Issue 3, June 2022, Pages 813–817
Massamba Ndiaye1, Jean-Pierre Magnan2, and Lamine Cissé3
1 École Supérieure Polytechnique (ESP) de Dakar - BP 5085, Dakar-Fann, Dakar, Senegal
2 Institut Français des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux (IFSTTAR), 14-20 Boulevard Newton - 77447 Marne-la-Vallée Cedex 2, France
3 Agence des travaux et de Gestion des Routes (AGEROUTE), Rue F x David Diop, Fann Résidence, BP 25 242, Dakar, Senegal
Original language: French
Copyright © 2022 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
Natural lateritic gravels are the most frequent materials in French-speaking subtropical Africa and the most used for the construction of road infrastructures. However, some difficulties are often noted in practice, in the dimensioning phase, on the choice of the modulus of these materials which is often done using the empirical relation E = 5 * ICBR of CEBTP. The results obtained within the framework of the present study suggest that this relation gives modulus values higher than those obtained by exploiting the linear parts of the curves stress-strain CBR. This would lead to undersizing the pavement by applying this relationship.
Author Keywords: dimensioning, pavement, modulus, stress-strain curve, CBR test.
Abstract: (french)
Les graveleux latéritiques naturels représentent les matériaux les plus présents en Afrique francophone noire et les plus utilisés pour la construction des infrastructures routières. Cependant, certaines difficultés sont souvent notées dans la pratique, en phase dimensionnement, sur le choix du module de ces matériaux qui est souvent approché par la relation empirique E= 5*ICBR du CEBTP. Les résultats présentés dans le cadre de cette présente étude laissent penser que cette relation donne des valeurs de module supérieures à celles obtenues en exploitant les parties linéaires des courbes effort-déformation CBR. Cela conduirait à sous-dimensionner les chaussées par application de cette relation.
Author Keywords: dimensionnement, chaussée, module, courbe effort-déformation, essai CBR.
How to Cite this Article
Massamba Ndiaye, Jean-Pierre Magnan, and Lamine Cissé, “Evaluation of the modulus of untreated lateritic gravel from the stress-strain curves of the CBR test,” International Journal of Innovation and Applied Studies, vol. 36, no. 3, pp. 813–817, June 2022.
