EXPERIMENTAL STUDY OF ADHESION BETWEEN FRAMEWORK IN RONIER WOOD (BORRASSUSAETHIOPUM) AND LATERITE CONCRETE

In todays world, the environment and the economy, are becoming more and more important, especially in the field of construction. As a result, many researches are beginning to emerge in order to find alternatives to the usual reinforced concrete. In this article, research is focused on constructions using local materials, more specifically on laterite concrete reinforced with plant reinforcement made of rônier wood. The main goal was to study the adhesion between these wooden reinforcements and the laterite concrete in order to submit this structural material to construction stresses. The average value of the adhesion stress obtained is 3.521±0.668 MPa for the reinforcements without serrations and 3.828±0.437 MPa for those with serrations. Rebars with serrations achieved a gain of about 09% to 20% over the surface rebar without serrations. These reinforcements with circular section with or without crenellation and with octagonal section incorporated in the laterite concrete beams considerably increased the resistance of the laterite concrete. This increase is close to 335.86% of the breaking stress for the beams reinforced with two reinforcements of circular section, 386.96% for the beams reinforced with two reinforcements of circular section with crenellation and 353.78% for the beams reinforced with two reinforcements of octagonal section. This study made it possible to show that reinforcements with a circular section with crenellation are better reinforcements in laterite concrete.