This study is about on the quality of bituminous coatings used for the rehabilitation of the Grand-Gassam-Nzikro road. Several tests in situ (temperature measurement and coring test) and laboratory tests (binder extraction, Marshall test and particle size analysis) were carried out in order to verify the conformity of the physical and mechanical characteristics of these mixes with those contained in the Notebook of Special Technical Clauses (CCTP). This study has shown that the application temperature of enrobes varies between 135.88° C and 146.2° C. The thicknesses of enrobe used are between 4.7 and 5.6 cm. He showed that the binder contents of different mixes are around 6%. The reliability of enrobe was confirmed thanks to the Marshall tests. Finally, this study has highlighted the two granular classes used for the manufacture of asphalt. The results obtained are satisfactory and conform to the specifications contained in the CCTP.
This study aims the description of the geometry of the weathering profile and identification of areas of high aquifer potential of geological formations in the region of Sikensi-Tiassalé (south of Côte d’Ivoire). For this reason, the weathering profile models have been established for this region. These models were carried out from drilling data implanted in the study area. The formations in the basement have a vertical structure and a significant horizontal heterogeneity that is allocated to changes in facies. A succession of several layers is observed. Fractured and altered basement is observed in its upper part. Fractures are scarce with depth. Superficial formations overlying the basement have variable thicknesses: To the surface, there is laterite cuirass and topsoil, thicknesses between 0.5 and 3.5 m. Underneath the laterite, there is the sandy clay alterites of thicknesses between 5 and 40 m, in which one can identify horizons of allotérites and isaltérites. The water potential is important in the fractured base because all arrivals of water is only found in this part of the geological formations.
The sedimentological and palynological study of 232 samples of cuttings from two servey drilled in the eastern ivorian coastline allowed us to characterize the aquifers of early Miocene. It falls within the context of the national drinking water supply from aquifers of the sedimentary basin in the said areas. Sedimentation consists of two facies (the quartz sands and clays). The predominance of subrounded to shiny and rounded grains reflect an aquatic transport of a relatively more or less long journey. Quartz subrounded grains, yellow orange and foxed show the presence of an oxidation and the mats grains reflect a transport by the wind. The granulometry study shows a dominance of sigmoidal facies
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