Elaboration and characterization of lightweight rammed earth containing hemp particles

Mabrouk, Yassine; Benazzouk, Amar; Lahmar, Abderrahim; Azrour, M.; Mocerino, Consiglia; Lahmar, Abdelilah

doi:10.1016/j.matpr.2022.02.319

Cited by 2 publications

(2 citation statements)

References 10 publications

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“…Mabrouk Y et al [20] studied the influence of waste from hemp for the manufacture of rammed earth. They found that the addition of hemp improves the mechanical performance of the rammed earth and its thermal properties, linked to the thermodynamic behavior of the building in terms of efficiency and durability.…”

Section: Introductionmentioning

confidence: 99%

Optimizing Polymer-Stabilized Raw Earth Composites with Plant Fibers Reinforcement for Historic Building Rehabilitation

Menadi,

Hadidane,

Benzerara

et al. 2023

Buildings

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This research focuses on the optimization of formulation, characterization, and damage analysis of plant fiber-reinforced polyester resin composites (jute and date palm). To better understand the characteristics and mechanical behavior of these materials, this study investigates the influence of resin content and plant fibers on the physico-mechanical behavior of the resin composites. Resinous composites consisting of polyester resin and raw earth were studied using a novel formulation based on an empirical method that follows the principle of earth saturation with polyester resin. Saturation was achieved with a 28% content of polyester resin, which appeared to be an optimal blend for the earth–resin composite. Plant fibers were randomly incorporated as reinforcement in the composites at various percentages (1%, 2%, and 3%) and lengths (0.5 cm, 1 cm, and 1.5 cm). Mechanical tests including bending, compression, and indentation were conducted to evaluate the mechanical properties of the composites. Analysis of fracture morphology revealed that the deformation and rupture mechanisms in bending, compression, and indentation of these composites differ from those of traditional concrete and cement mortar. The obtained results indicate that the composites exhibit acceptable performance and could be favorably employed in the rehabilitation of historic buildings.

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Section: Introductionmentioning

confidence: 99%

Optimizing Polymer-Stabilized Raw Earth Composites with Plant Fibers Reinforcement for Historic Building Rehabilitation

Menadi,

Hadidane,

Benzerara

et al. 2023

Buildings

View full text Add to dashboard Cite

show abstract

“…However, these methods cannot be completely used for modeling bio-based building materials since there are more complex microstructures in bio-based materials compared to steel fiber concrete. Some plant fibers such as hemp [29] and wheat straw [30] have a transversely isotropic structure compared to the isotropic steel fiber. The volume fraction of plant fiber in concrete is much higher than that of steel fiber, e.g., 55% in [12].…”

Section: Introductionmentioning

confidence: 99%

A Multi-Scale Numerical Simulation on Thermal Conductivity of Bio-Based Construction Materials

Huang

Abou-Chakra

Geoffroy

et al. 2022

Construction Materials

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Amid increasing concern about carbon emissions and energy consumption in the building industry, bio-based construction materials are one of the solutions, especially considering their excellent thermal insulation. This study aims to develop a multi-scale numerical model to analyze the effect of microstructure on the thermal conductivity of a bio-based construction material. To achieve this, the size, shape, orientation, porosity, and water saturation of the bio-aggregate were considered in this study. The results show that the thermal conductivity of the bio-based material increases significantly and nonlinearly with water saturation, in contrast to the parallel thermal conductivity of the transversely isotropic bio-aggregate, which increases linearly. The thermal conductivity of the bio-based material shows an anisotropy in different directions and it obtains a maximum at water saturation of 0.4. Analysis of inclusions with different shapes shows that the thermal conductivity in the compaction direction is almost independent of the shape, but not in the direction perpendicular to the compaction. The finite element results show that the heat flow tends to transfer along the bio-aggregate rather than across it. These findings help to better understand the effect of microstructure on thermal conductivity and then promote the application of bio-based concrete as an insulation material in buildings.

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Elaboration and characterization of lightweight rammed earth containing hemp particles

Cited by 2 publications

References 10 publications

Optimizing Polymer-Stabilized Raw Earth Composites with Plant Fibers Reinforcement for Historic Building Rehabilitation

Optimizing Polymer-Stabilized Raw Earth Composites with Plant Fibers Reinforcement for Historic Building Rehabilitation

A Multi-Scale Numerical Simulation on Thermal Conductivity of Bio-Based Construction Materials

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