Influence of Palm Oil Fibers Length Variation on Mechanical Properties of Reinforced Crude Bricks

Mazhar Hussain (1) , Daniel Levacher (1) , Nathalie Leblanc (2) , Hafida Zmamou (2) , Irini Djeran-Maigre (3) , Andry Razakamanantsoa (4)

1 M2C - Morphodynamique Continentale et Côtière
2 UT&A - Transformations et Agro-ressources
3 GEOMAS - Géomécanique, Matériaux et Structures
4 GERS-GIE - Géomatériaux et Intéractions Environnementales

Crude bricks are composite materials manufactured with sediments and natural fibers. Natural fibers are waste materials and used in construction materials for reinforcement. Their reuse in manufacturing reinforced crude bricks is eco-friendly and improves mechanical and thermal characteristics of crude bricks. Factors such as type of fibers, percentage of fibers, length of fibers and distribution of fibers inside the bricks have significant effect on mechanical, physical and thermal properties of biobased composite materials. It can be observed by tests such as indirect tensile strength, compressive strength for mechanical characteristics, density, shrinkage, color for physical properties, thermal conductivity and resistivity for thermal properties, and inundation test for durability of crude bricks. In this study, mechanical and physical characteristics of crude bricks reinforced with palm oil fibers are investigated and effect of change in percentage and length of fibers is observed. Crude bricks of size 4*4*16 cm 3 are manufactured with dredged sediments from Usumacinta River, Mexico and reinforced with palm oil fibers at laboratory scale. For this purpose, sediments and palm oil fibers characteristics were studied. Length of fibers used is 2cm and 3cm. Bricks manufacturing steps such as sediments fibers mixing, moulding, compaction and drying are elaborated. Dynamic compaction is opted for compaction of crude bricks due to energy control. Indirect tensile strength and compressive strength tests are conducted to identify the mechanical characteristics of crude bricks. Physical properties of bricks are studied through density and shrinkage. Durability of crude bricks is observed with inundation test. Thermal properties are studied with thermal conductivity and resistivity test. Distribution and orientation of fibers and fibers counting are done to observe the homogeneity of fibers inside the crude bricks. Finally, comparison between the mechanical characteristics of crude bricks manufactured with 2cm and 3cm length with control specimen was made.

Mots clés: Crude Bricks; Dredged Sediments; Length of Fiber; Oil Palm Fibers

Domaines: Sciences de l'ingénieur [physics]

Mazhar Hussain, Daniel Levacher, Nathalie Leblanc, Hafida Zmamou, Irini Djeran-Maigre, et al.. Influence of Palm Oil Fibers Length Variation on Mechanical Properties of Reinforced Crude Bricks. Construction Technologies and Architecture, 2022, 1, pp.707-714. ⟨10.4028/www.scientific.net/CTA.1.707⟩. ⟨hal-04169577⟩