Effet de l’addition de fibres de coco traitées à la potasse sur les propriétés mécaniques des matériaux de construction à base d’argile – ciment

Christine, Djohore Ange; Séraphin, Djomo Agré; Olivier, Boffoue Moro; Emeruwa, Edjikémé

doi:10.19044/esj.2018.v14n36p104

Cited by 3 publications

(3 citation statements)

References 2 publications

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“…It is done in 3 steps: preparation of the soil material from, which the samples have been extracted by surface excavation, compression of the mixture introduced into a 16 × 4 × 4 cm mould, and hardening. Referring to previous studies conducted with straw as stabilizers for clay bricks, Djohore Ange Christine et al (2018) [22] indicate that the presence of these straw will prevent shrinkage and swelling responsible for cracks, thus improving physical properties and mechanical resistances. In the preparation of the soil, it must be given an appropriate compressive load to obtain the best result and after the mixture has been placed in the mould [2].…”

Section: Compressed Stabilized Earth Block Specimen Preparationmentioning

confidence: 89%

An Experimental Study on the Use of Fonio Straw and Shea Butter Residue for Improving the Thermophysical and Mechanical Properties of Compressed Earth Blocks

Malbila¹,

Delvoie²,

Toguyeni³

et al. 2020

JMMCE

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The efficient use of building materials is one of the responses to increasing urbanization and building energy consumption. Soil as a building material has been used for several thousand years due to its availability and its usual properties improving and stabilization techniques used. Thus, fonio straws and shea butter residues are incorporated into tow soil matrix. The objective of this study is to develop a construction eco-material by recycling agricultural and biopolymer by-products in compressed earth blocks (CEB) stabilization and analyze these by-products' influence on CEB usual properties. To do this, compressed stabilized earth blocks (CSEB) composed of clay and varying proportion (3% to 10%) of fonio straw and shea butter residue incorporated were subjected to thermophysical, flexural, compressive, and durability tests. The results obtained show that the addition of fonio straw and shea butter residues as stabilizers improves compressed stabilized earth blocks thermophysical and mechanical performance and durability. Two different clay materials were studied. Indeed, for these CEB incorporating 3% fonio straw and 3%-10% shea butter residue, the average compressive strength and three-point bending strength values after 28 days old are respectively 3.478 MPa and 1.062 MPa. In terms of CSEB thermal properties, the average thermal conductivity is 0.549 W/m•K with 3% fonio straw and from 0.667 to 0.798 W/m. K is with 3%-10% shea butter residue and the average thermal diffusivity is 1.665.10 −7 m 2 /s with 3% FF and 2.24.10 −7 m 2 /s with 3.055.10 −7 m 2 /s with 3%-10% shea butter residue, while the average specific heat mass is between 1.

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Section: Compressed Stabilized Earth Block Specimen Preparationmentioning

confidence: 89%

An Experimental Study on the Use of Fonio Straw and Shea Butter Residue for Improving the Thermophysical and Mechanical Properties of Compressed Earth Blocks

Malbila¹,

Delvoie²,

Toguyeni³

et al. 2020

JMMCE

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“…To improve adhesion between bers and the polymer matrix and reduce moisture absorption, surface modi cations are typically required. It is the reason of the use of alkaline (NaOH) treatment in this context to enhance ber-matrix compatibility and improve composite quality [7], [15]. As the values mentioned in The compressive strength test was performed after 7 days and 90 days of curing.…”

Section: Chemical Composition Of Palm Bermentioning

confidence: 99%

Effect of treated palm fibers on the mechanical properties of compressed earth bricks stabilized by geopolymer binder based natural pozzolan

Kamwa,

Mousi,

Tome

et al. 2024

Preprint

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The aim of this work is to study the influence of the palm fibers treated with soda hydroxide solution, on the properties of the compressed earth bricks stabilized with 15% of natural pozzolana based alkaline geopolymer binder. To achieve this objective, mortars composed of treated fibers at different levels (0.1, 0.2, 0.3, 0.4 and 0.5%) for a length of 4 and 16 cm, have been developed. These different mortars with those without fibers were subjected to mechanical (dry compression, wet compression, and flexion), physical (water absorption), mineralogical (XRD, FTIR) and microstructural (SEM/EDX) characterizations after 7 and 90 days. The results obtained show that, in general the addition of fibers improves the mechanical and physical properties of compressed earth bricks stabilized with 15% of alkali-geopolymer binder. In addition, the adding of treated palm fibers does not have an influence on the mineralogical composition of the composite bricks. The observation of the diffractograms of FTIR analysis shows that these fibers have a capacity to sorption water molecules. Furthermore, the optical analysis shows that the binder used perfectly encapsulates the fibers. This situation shows that the treated fibers act perfectly as a filler in the matrix. The maximum dry compressive strength and flexural strength values are obtained with the addition of 0.4% fibers at 90 days and are 8.08 and 5.8 MPa respectively. Furthermore, an additional of 0.4% of palm fibers in earth bricks stabilized by the alkaline geopolymer binder based natural pozzolan is recommended for the construction of buildings.

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“…Christine et al [4] worked on the effect of the addition of potash-treated coir fibers on the mechanical properties of clay/cement building materials. The results obtained show that the incorporation of coir fibers enhances the mechanical strength and deformability of clay/cement mortars, and the adhesion between the clay/cement matrix and fibers becomes strong with treated coir fiber.…”

Section: Introductionmentioning

confidence: 99%

Enhancing the Performance and Durability of Eco-Friendly Mortar with Diss Fibers (Ampelodesmos mauritanicus)

Abdelouahed,

Kechkar,

Hebhoub

et al. 2023

RCMA

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This study investigates the potential use of Diss fibers as a sustainable alternative in ecoconstruction and civil engineering. The research introduced Diss fibers as aggregates, partially replacing conventional sand in mortar by volume with proportions of 1/3 and 2/3, aiming to create an eco-friendly and lighter mortar. In this context, various properties of the fresh mortars, such as density, workability, and occluded air content, were examined. Additionally, the mechanical performance in the hardened state, including compressive and flexural strengths, was evaluated. Durability parameters such as water absorption, capillary absorption, and resistance to aggressive media were also assessed. The results demonstrated that mortars incorporating Diss fibers were lighter and more workable. The inclusion of these fibers enhanced the flexural strength and chemical resistance, as evidenced by the low percentages of mass loss in aggressive solutions such as HCl and CH3COOH. However, the introduction of the fibers negatively influenced the mechanical resistance and water absorption-both by immersion and capillaritydue to the porosity introduced into the composites.

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Effet de l’addition de fibres de coco traitées à la potasse sur les propriétés mécaniques des matériaux de construction à base d’argile – ciment

Cited by 3 publications

References 2 publications

An Experimental Study on the Use of Fonio Straw and Shea Butter Residue for Improving the Thermophysical and Mechanical Properties of Compressed Earth Blocks

An Experimental Study on the Use of Fonio Straw and Shea Butter Residue for Improving the Thermophysical and Mechanical Properties of Compressed Earth Blocks

Effect of treated palm fibers on the mechanical properties of compressed earth bricks stabilized by geopolymer binder based natural pozzolan

Enhancing the Performance and Durability of Eco-Friendly Mortar with Diss Fibers (Ampelodesmos mauritanicus)

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