Abstract
CHARACTERISTICS OF THE MANGROVE SOIL OF THE GUINEAN COASTAL ZONE, IN THE ROUGH STATE AND IN THE STABILIZED STATE
Abdoulaye CISSE, Mamadouba CONTE, Alama CAMARA and Yacouba CAMARA*
ABSTRACT
Mangrove soil is a material rarely used in the Republic of Guinea. It is important to know the characteristics of this material in order to use it in construction. The objective of this work is to know the chemical, physical and mechanical characteristics of mangrove soil, stabilized or not for its use in construction. To achieve this objective, tests and analyzes were carried out both on the material in its raw state and in its stabilized state. The chemical analysis has shown that the Guinean mangrove soil contains in its raw state (unstabilized) a significant quantity of humus, approximately 49.97 mg/l, but the addition of hydraulic binder leads to a reduction in this content. Particle size analysis gave us 55% clay, 44.5% sand and 0.50% gravel. This means that the mangrove soil is very clayey, which does not favor its use in the construction of buildings without stabilization. For a plasticity index Ip equal to 31.21 in the raw state, stabilization with hydraulic lime caused the reduction of this parameter, and the increase of the consistency index. The results of this work show that Guinean mangrove soil can be used in certain areas of construction.
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