Thermal study of clay bricks reinforced by sisal-fibers used in construction in south of Morocco

Ouakarrouch, Mohamed; Azhary, Karima El; Mansour, Majid; Laaroussi, Najma; Garoum, Mohammed

doi:10.1016/j.egyr.2019.11.045

Cited by 22 publications

(9 citation statements)

References 15 publications

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“…The thermal www.nature.com/scientificreports/ performance of the white categories' is lower than the red ones. This work agrees with the other studies 13,[46][47][48][49][50] (Table 4) that demonstrated the decreasing thermal properties after fiber reinforcement.…”

Section: Thermal Characterizations Results Samples Densitysupporting

confidence: 93%

Physicochemical and thermomechanical performances study for Timahdite sheep wool fibers application in the building's insulation

Atbir

Taïbi

Aouan

et al. 2023

Sci Rep

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The present research focuses on the development and thermomechanical characterization of unfired solid bricks based on clay (white and red) and Timahdite sheep wool, which are local, durable, abundant, and economical materials. As this clay material is incorporated with sheep wool in the form of yarn multi-layers in opposite directions. It achieves good thermal and mechanical performance and a lightness of these bricks as acquired progress. This new method of reinforcement offers significant thermo-mechanical performance for the composite for thermal insulation in sustainable buildings. Several physicochemical analyses to characterize the raw materials were used. Thermomechanical measurements to characterize the elaborated materials. The wool yarn effect was significant on the mechanical behavior of the developed materials at 90 days, with flexural strength from 18 to 56% for the white clay. And 8–29% for the red one. Decrease in compressive strength from 9 to 36% for the white clay and 5–18% for the red one. These mechanical performances are accompanied by thermal conductivity gain ranging from 4 to 41% for the white and 6–39% for the red for wool fractions: 6–27 g. This green multi-layered bricks from abundant local materials with optimal thermo-mechanical properties, qualified for the intended use for thermal insulation and energy efficiency in the construction and development of local economies.

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Section: Thermal Characterizations Results Samples Densitysupporting

confidence: 93%

Physicochemical and thermomechanical performances study for Timahdite sheep wool fibers application in the building's insulation

Atbir

Taïbi

Aouan

et al. 2023

Sci Rep

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show abstract

“…Several studies have been conducted and published confirming our results. [14,15,18,19,20] have shown that the reinforcement of the earth matrix by a variety of plant fibers improves thermal conductivity and contributes to lightness of composite materials. It can be deduced that there is a strong dependence between thermal conductivity and apparent density since the first decreases considerably with density.…”

Section: Thermal Conductivitymentioning

confidence: 99%

“…The thermal performance of clay can be improved by incorporating natural additives to obtain a more insulating composite material. In this context, Ouakarrouch et al [14] effected an experimental and numerical characterization to assess the thermal comfort of "Ksar Lamaadid" located in Erfoud region. This ksar is built with a new biocomposite material based on clay and sisal fibers.…”

Section: Introductionmentioning

confidence: 99%

Developing New Insulation Building Materials Based on Clay and Ecological Additives

Benallel¹,

Ouakarrouch²,

Mellaikhafi³

et al. 2020

IJITEE

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The thermal performance of exterior walls is considered as a key factor to improving energy efficiency in buildings, especially in areas with cold climates in winter and warm climates in summer. As part of this study, and whose building materials are known for their low thermal properties. The X-ray diffraction was performed on the clay material and the different fibers in order to determine their crystallinity. An experimental characterization of thermophysical properties of a new biocomposites material for the sustainable buildings construction in southern Morocco is presented. These materials can be used as mortar for ceilings and exterior walls. To this end, several samples were prepared from clay extracted from the Errachidia region (south-east Morocco) and three mass fractions of alfa, fig and reed fibers (20%, 40% and 60%). The thermal characterization method adopted is that of the highly insulated thermal house. The results revealed that the incorporation of alfa, fig and reed fibers into the clay matrix allowed a remarkable reduction in apparent density and thermal conductivity. This result shows the interest of using this biocomposite material in construction buildings to ensure thermal comfort and reduce greenhouse gas emissions.

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“…Local natural fibers have many advantages such as their availability and low density (Sair et al, 2018). A lot of work has been carried out on the use of hemp as a thermal insulation material (Barnat-Hunek et al, 2015; Bourdot et al, 2017; Hussain et al, 2019), other aggregates such as sugarcane (Onésippe et al, 2010; Postdam et al, 2019), flax (Page et al, 2017; Rahim et al, 2016), sisal (Li et al, 2000; Ouakarrouch et al, 2020), and bamboo (Ghavami, 2005) are increasingly developed as insulation materials. In Senegal, since the creation of the Diama and Manantali dams (Diaw et al, 2022), an invasive plant named typha has been growing along the Senegal River.…”

Section: Introductionmentioning

confidence: 99%

Variability of mechanical performance of cement-typha insulation materials

Diaw,

Faye,

Hans

et al. 2023

Journal of Building Physics

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The reduction of energy consumption in the building sector is an important consideration for the protection of environment and availability of fossil resources. Therefore, plant-based concretes are increasingly developed to insulate buildings and reduce the contribution of the construction sector to energy consumption. In this study, concrete made of typha with a cementitious matrix was elaborated. The mechanical performances (compressive strength and apparent elastic module) are evaluated. The variability of these performances according to the water/binder ratio, the curing conditions, and the class of cement were studied. The results show that mechanical performances of Typha cement concretes are in accordance with the values recommended in the French professional rules for hemp construction. The apparent elastic module obtained range from 15 to 35 MPa. The stress at 10% strain decreases from 0.52 to 0.30 MPa with increasing water content. The water/binder ratio of 0.7 conducted to the best mechanical performance.

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Thermal study of clay bricks reinforced by sisal-fibers used in construction in south of Morocco

Cited by 22 publications

References 15 publications

Physicochemical and thermomechanical performances study for Timahdite sheep wool fibers application in the building's insulation

Physicochemical and thermomechanical performances study for Timahdite sheep wool fibers application in the building's insulation

Developing New Insulation Building Materials Based on Clay and Ecological Additives

Variability of mechanical performance of cement-typha insulation materials

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