Thermal and mechanical characterization of adobes bio-sourced with Pennisetum setaceum fibers and an application for modern buildings

Charai, Mouatassim; Salhi, Morad; Horma, Othmane; Mezrhab, Ahmed; Karkri, Mustapha; Amraqui, Samir

doi:10.1016/j.conbuildmat.2022.126809

Cited by 31 publications

(9 citation statements)

References 47 publications

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“…• Nine articles focused on powder: water hyacinth ash [44], sugarcane bagasse ash [7,35,45,46], and rice husk ash [47][48][49][50]; • Five articles focused on fibers: Pennisetum setaceum [51], plantain pseudo-stem fiber [52], coconut fiber [53], alfa fiber [54] and paper cellulose [55]; • Four items studied other types of waste: wheat and barley straw [27], sargassum muticum seaweed [31], crepidula fornicata seashells [56], and shea butter waste [57].…”

Section: Article Search and Filtration Techniquementioning

confidence: 99%

“…Even in cases where the emphasis is not primarily on compressive strength, such as in the study by Charai et al [51], compressed earth blocks (CEBs) can still exhibit satisfactory structural properties. In their investigation aimed at proposing eco-friendly thermal mass elements for construction, Charai et al achieved a compressive strength of 1.05 MPa using 2% Pennisetum setaceum fibers in adobe production.…”

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confidence: 99%

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Advancing Earth-Based Construction: A Comprehensive Review of Stabilization and Reinforcement Techniques for Adobe and Compressed Earth Blocks

Bailly,

El Mendili,

Konin

et al. 2024

Eng

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This comprehensive literature review investigates the impact of stabilization and reinforcement techniques on the mechanical, hygrothermal properties, and durability of adobe and compressed earth blocks (CEBs). Recent advancements in understanding these properties have spurred a burgeoning body of research, prompting a meticulous analysis of 70 journal articles and conference proceedings. The selection criteria focused on key parameters including construction method (block type), incorporation of natural fibers or powders, partial or complete cement replacement, pressing techniques, and block preparation methods (adobe or CEB). The findings unearth several significant trends. Foremost, there is a prevailing interest in utilizing waste materials, such as plant matter, construction and demolition waste, and mining by-products, to fortify or stabilize earth blocks. Additionally, the incorporation of natural fibers manifests in a discernible reduction in crack size attributable to shrinkage, accompanied by enhancements in durability, mechanical strength, and thermal resistance. Moreover, this review underscores the imperative of methodological coherence among researchers to facilitate scalable and transposable results. Challenges emerge from the variability in base soil granulometry and disparate research standards, necessitating concerted efforts to harness findings effectively. Furthermore, this review illuminates a gap in complete lifecycle analyses of earthen structures, underscoring the critical necessity for further research to address this shortfall. It emphasizes the urgent need for deeper exploration of properties and sustainability indicators, recognizing the inherent potential and enduring relevance of earthen materials in fostering sustainable development. This synthesis significantly contributes to the advancement of knowledge in the field and underscores the continued importance of earth-based construction methodologies in contemporary sustainable practices.

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Section: Article Search and Filtration Techniquementioning

confidence: 99%

mentioning

confidence: 99%

Advancing Earth-Based Construction: A Comprehensive Review of Stabilization and Reinforcement Techniques for Adobe and Compressed Earth Blocks

Bailly,

El Mendili,

Konin

et al. 2024

Eng

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“…Other research has also focused on the use of bio-sourced materials for thermal insulation [19][20][21], such as hemp and hemp concrete, were subjected to a dynamic simulation analysis using TRNSYS software to assess their performance in a building in Meknes, Morocco. The results showed a 36.78% reduction in annual heating and cooling requirements when the building's roof and external walls were insulated with hemp [22].…”

Section: Introductionmentioning

confidence: 99%

Comparative Analysis of the Effect of Thermal Insulation on the Energy Requirements of a Tertiary Building in Meknes

BOUCHARK

2024

Mediterranean Architectural Heritage

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Abstract. Thermal insulation materials are essential for minimizing heat loss in winter and heat gain in summer in buildings, irrespective of the presence or absence of air conditioning systems. The right choice of insulation materials paves the way for considerable savings in buildings' energy requirements, while rationalizing the use of air-conditioning systems. This is all the more important in Morocco, where the building sector is one of the biggest consumers of energy. Consequently, improving the energy efficiency of buildings is an imperative, especially in the current context characterized by the gradual depletion of fossil resources and ever-rising energy costs. Our study focuses on the practical impact of integrating different insulation materials, including phase-change materials (PCMs), hemp concrete and polystyrene, into the structure of a tertiary building in Meknes, Morocco. The results of this research highlight that the incorporation of effective thermal insulation in the building's various construction elements results in substantial reductions in energy requirements, both in terms of heating and cooling. It should be noted that this study was carried out using energy simulations with TRNSYS software.

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“…For instance, Khalil et al [23] showed good reinforcing and thermal insulation properties of rice husk. Pennisetum Setaceum (a herbaceous plant) fibers were of interest for lightweight thermal insulating materials [24]. A small amount of date palm fibers (6% by weight) resulted in a thermal conductivity reduction of about 48% [25].…”

Section: Introductionmentioning

confidence: 99%

Thermal and Acoustic Performance of Gypsum Plasters Mixed with Different Additives: Influence of Bio-Based, Synthetic, and Mineral Fillers

Merli,

Bouzit,

Taha

et al. 2023

Applied Sciences

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Due to the high impact of the building sector on the environment, a growing interest focuses on insulating materials able to ensure good thermo-acoustic performance for the building envelope from a sustainable and circular economy perspective. In this context, Moroccan natural gypsum was mixed with local natural waste materials. The thermal and acoustic properties of the samples were measured; they were compared to those of synthetic- and mineral-based gypsum plasters manufactured with the same technique. A Small Hot Box apparatus was used for thermal characterization, whereas acoustic performance was investigated by means of a Kundt’s Tube. Natural and synthetic additives result in a reduction in density and an improvement in thermal performance. Conductivity values in the 0.181–0.238 W/mK range were obtained, depending on the type of natural additive, with respect to 0.275–0.323 W/mK of mineral-based gypsum plasters. The acoustic measurements showed that all the composites have similar performance in terms of acoustic absorption, whereas high transmission loss values were obtained for the natural additives (TL = 35–59 dB). Petiol of Palm and Stipa Tenacissima were found to be materials able to improve both thermal and acoustic properties.

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Thermal and mechanical characterization of adobes bio-sourced with Pennisetum setaceum fibers and an application for modern buildings

Cited by 31 publications

References 47 publications

Advancing Earth-Based Construction: A Comprehensive Review of Stabilization and Reinforcement Techniques for Adobe and Compressed Earth Blocks

Advancing Earth-Based Construction: A Comprehensive Review of Stabilization and Reinforcement Techniques for Adobe and Compressed Earth Blocks

Comparative Analysis of the Effect of Thermal Insulation on the Energy Requirements of a Tertiary Building in Meknes

Thermal and Acoustic Performance of Gypsum Plasters Mixed with Different Additives: Influence of Bio-Based, Synthetic, and Mineral Fillers

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