Development of an Eco-material Based on Palmyra Aggregates

Abstract

This study is part of a project to develop a bio-based material meeting the criteria of sustainable development in the field of construction. A study was then made on a cement matrix composite reinforced by aggregates of Borassus aethopium mart (palmyra).
 For this purpose, studies of cement compatibility with this plant aggregate, the physical, mechanical and thermal behavior of the concrete were performed for two granular compositions. The compatibility study revealed that palmyra aggregrates, although not previously treated, are compatible with Portland-limestone cement. The characterization tests focused on the mechanical properties of three-point flexural tensile strength and compressive strength and thermal properties such as effusivity, conductivity and diffusivity. The results obtained are promising: they have very good mechanical and thermal characteristics, considering its use in construction. The mechanical strengths reach 16.25 MPa for a density less than 1500 kg / m3. The thermal conductivity varies between 0.270 and 0.415. They can be used for the manufacture of panels used in the realization of suspended ceilings and tiles for the realization of roofs.

Physical and Thermal Characterization of Cementitious Composites Based on Plant-Biomass

“…For an increase in the cement content of about 10%, the thermal conductivity increases by an average 15%. These results confirm those of Dokoet al [27] who obtained similar results on concrete based on palmyra aggregates.…”