Development of an Eco-material Based on Palmyra Aggregates
Valéry K. Doko
Department of Civil Engineering, Polytechnic School of Abomey-Calavi, University of Abomey-Calavi, 01 BP 2009 Cotonou, Benin.
Edem Chabi *
Laboratory of Rural Engineering, National University of Agriculture, Kétou, Benin.
Sena Peace Hounkpè
Laboratory of Water Technical Sciences, University of Abomey-Calavi, Benin.
Edmond C. Adjovi
Department of Civil Engineering, Polytechnic School of Abomey-Calavi, University of Abomey-Calavi, 01 BP 2009 Cotonou, Benin and Department of Civil Engineering, National University of Sciences, Technologies, Engineering and Mathematics, Abomey, Benin.
*Author to whom correspondence should be addressed.
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.
Keywords: Bio-based material, sustainable development, palmyra aggregate, lightweight concrete.