[ Influence des fibres de noix de coco sur les propriétés physiques et mécaniques des blocs en terre comprimée stabilisée ]
Volume 43, Issue 3, September 2024, Pages 571–578
Agbeme Kossivi Eric1, P’Kla Abalo2, and Kouto Yaovi Agbeko3
1 Laboratoire de Recherche en Science de l’Ingénieur (LARSI), Université de Lomé, BP 1515, Lomé, Togo
2 Laboratoire de Recherche en Science de l’Ingénieur (LARSI), Université de Lomé, BP 1515, Lomé, Togo
3 Laboratoire de Recherche en Science de l’Ingénieur (LARSI), Université de Lomé, BP 1515, Lomé, Togo
Original language: French
Copyright © 2024 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
The present research aims to determine the influence of coconut fibers from coconut palms on the physical and mechanical properties of compressed and cement-stabilized earth blocks. The study focused on the density, capillary absorption, compressive strength and flexural strength of the blocks. The first part of this study is devoted to the determination of the characteristics of the soil and those of coconut fibres. Five fiber contents (0, 0.1, 0.2, 0.3 and 0.4%) were used and the soil consists of 70% sand and 30% clay silt. Three cement contents were incorporated (2%; 4% and 8%). Two types of specimens are then manufactured by mixing the fibres with the earth-cement matrix: 14x9.5x29.5 cm3 blocks for compression and 4x4x16 cm3 briquettes for bending. The latter are stored away from the sun until maturity. From his studies, it appears that the density of the blocks decreases with increasing fiber content and the opposite is observed with capillary absorption. Overall, the compressive strength decreases with increasing fiber content and increases with cement content. However, the flexural strength increases with the fiber content but within a certain limit: beyond 0.3% fiber, the strength drops.
Author Keywords: Clay soil, coconut fibres, cement, tensile strength, compressive strength.
Volume 43, Issue 3, September 2024, Pages 571–578
Agbeme Kossivi Eric1, P’Kla Abalo2, and Kouto Yaovi Agbeko3
1 Laboratoire de Recherche en Science de l’Ingénieur (LARSI), Université de Lomé, BP 1515, Lomé, Togo
2 Laboratoire de Recherche en Science de l’Ingénieur (LARSI), Université de Lomé, BP 1515, Lomé, Togo
3 Laboratoire de Recherche en Science de l’Ingénieur (LARSI), Université de Lomé, BP 1515, Lomé, Togo
Original language: French
Copyright © 2024 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
The present research aims to determine the influence of coconut fibers from coconut palms on the physical and mechanical properties of compressed and cement-stabilized earth blocks. The study focused on the density, capillary absorption, compressive strength and flexural strength of the blocks. The first part of this study is devoted to the determination of the characteristics of the soil and those of coconut fibres. Five fiber contents (0, 0.1, 0.2, 0.3 and 0.4%) were used and the soil consists of 70% sand and 30% clay silt. Three cement contents were incorporated (2%; 4% and 8%). Two types of specimens are then manufactured by mixing the fibres with the earth-cement matrix: 14x9.5x29.5 cm3 blocks for compression and 4x4x16 cm3 briquettes for bending. The latter are stored away from the sun until maturity. From his studies, it appears that the density of the blocks decreases with increasing fiber content and the opposite is observed with capillary absorption. Overall, the compressive strength decreases with increasing fiber content and increases with cement content. However, the flexural strength increases with the fiber content but within a certain limit: beyond 0.3% fiber, the strength drops.
Author Keywords: Clay soil, coconut fibres, cement, tensile strength, compressive strength.
Abstract: (french)
La présente recherche vise à déterminer l’influence des fibres de noix de coco issus du cocotier sur les propriétés physiques et mécaniques des blocs de terre comprimée et stabilisés au ciment. L’étude s’est focalisée sur la densité, l’absorption capillaire, la résistance à la compression et à la flexion des blocs. La première partie de cette étude est consacrée à la détermination des caractéristiques de la terre et celles des fibres de noix de coco. Cinq teneurs en fibres (0; 0,1; 0,2; 0,3 et 0,4 %) ont été utilisée et la terre est constituée de 70% de sable et 30% de limon argileux. Trois teneurs en ciment ont été incorporée (2%; 4% et 8%). Deux types d’éprouvettes sont ensuite fabriqués en mélangeant les fibres à la matrice terre-ciment: les blocs de dimensions 14x9,5x29,5 cm3 pour la compression et les briquettes 4x4x16 cm3 pour la flexion. Ces derniers sont stockés à l’abri du soleil jusqu’à maturité. De ses études, il ressort que la densité des blocs diminue avec l’augmentation de la teneur en fibre et le contraire est constaté avec l’absorption capillaire. De façon globale, la résistance à la compression décroît avec l’augmentation de la teneur en fibre et croit avec la teneur en ciment. Cependant, la résistance à la flexion augmente avec la teneur en fibres mais dans une certaine limite: au-delà de 0,3% de fibres, la résistance chute.
Author Keywords: Terre argileuse, fibres de coco, ciment, résistance à la traction, résistance à la compression.
How to Cite this Article
Agbeme Kossivi Eric, P’Kla Abalo, and Kouto Yaovi Agbeko, “Influence of coconut fibers on the physical and mechanical properties of stabilized compressed earth blocks,” International Journal of Innovation and Applied Studies, vol. 43, no. 3, pp. 571–578, September 2024.
