Evolution of Lateritic Soils Geotechnical Parameters during a Multi-Cyclic OPM Compaction and Correlation with Road Traffic

Abstract

Gravel lateritic soils are intensively used in road geotechnical engineering. This material is largely representative of engineering soil all around the tropical African Countries [1,2]. Gravel lateritic soils from parts of Burkina Faso and Senegal (West Africa) are used to determine the evolution of the geotechnical parameters from one to ten cycles of modified Proctor compaction. This test procedure is non-common for geotechnical purposes and it was found suitable and finally adopted to describe how these problematic soils behave when submitted to a multi-cyclic set of Modified Proctor compactions (OPM) [3,4]. On another hand, we propose a correlation between the traffic and the cycles of compaction considered as the repeated load. From that, this work shows the generation of active fine particles, the decrease of the CBR index and also the mechanical characteristics (mainly the Young Modulus, E) that contribute at least to the main deformation of the road structure

The Structural Function of the Dutch Buttressing of the East Curtain Wall of Elmina Castle, Elmina, Ghana

“…The parameters needed to construct Mohr-Coulomb model are obtained based on previous research and are documented in Table 2. Masonry / Roughhewed Stone [11], [12] Lateritic Soil [17] Elmina Sandstone […”

Grain Size Influence on the Compaction Aptitude and the Bearing Strength of the Gravel Lateritic Soils

“…Authors who have done recent work on these contexts and this material claim the importance to change the technical approach of the analysis, either by the use of the Modulus [4] or by the treatment of the material ([2] [5] [6]). It is necessary to perform geotechnical usual tests on this material, by studying the evolution of its main properties under traffic such as gradation, plasticity, compaction characteristics and their bearing strength, to appreciate accurately their behavior ( [7] [8]), in order to adapt their mechanical characteristics to the increasingly stringent traffic conditions with the view of achieving the triple challenge of state, nature and behavior.…”