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Resilient Modulus of Compacted Lateritic Soils from Senegal at OPM Conditions
Laboratoire de Mécanique et Modélisation—UFR Sciences de l’ Ingénieur, Université de Thiès, Thiès, Sénégal
Laboratoire de Mécanique et Modélisation—UFR Sciences de l’ Ingénieur, Université de Thiès, Thiès, Sénégal
Laboratoire d’ Alembert—Université Pierre et Marie Curie, Paris, France
Laboratoire de Mécanique et Modélisation—UFR Sciences de l’ Ingénieur, Université de Thiès, Thiès, Sénégal
- 1 Laboratoire de Mécanique et Modélisation—UFR Sciences de l’ Ingénieur, Université de Thiès, Thiès, Sénégal
- 2 Laboratoire de Mécanique et Modélisation—UFR Sciences de l’ Ingénieur, Université de Thiès, Thiès, Sénégal
- 3 Laboratoire d’ Alembert—Université Pierre et Marie Curie, Paris, France
- 4 Laboratoire de Mécanique et Modélisation—UFR Sciences de l’ Ingénieur, Université de Thiès, Thiès, Sénégal
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Abstract
Repeated load triaxial tests were performed on five compacted gravel lateritic soils collected from different locations in Senegal: Sébikotane, Dougar, Pa Lo, Mont-Rolland and Ngoundiane. The study revealed that resilient modulus de creases with the increase of the bulk and deviatoric stress in constant confining pressure. In addition, resilient modulus increases with the percentage of cement for appreciably equal contents of moisture. This effect tends to stop for higher stress. Besides, correlations were made with some models of resilient modulus such as the Uzan-Witczack model (Witczack and Uzan, 1988 [1]) and the National Highway Research Program (NCHRP) model (2004 [ 2 ]). The study con firms that both models give very good results with the best correlations being obtained with the Uzan-Witczack model.
KeywordsGravel Lateritic SoilsResilient ModulusMechanical BehaviourPavementCyclic Triaxial TestMechanistic Design
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