The Challenges of Local and Bio-Sourced Materials on Thermal Performance: Review, Classification and Opportunity

Ba, Labouda; Abbassi, Ikram El; Kane, Cheikh Sidi Ethmane; Darcherif, Abdel Moumen; Ndongo, Mamoudou

doi:10.4028/www.scientific.net/jera.47.85

Cited by 13 publications

(8 citation statements)

References 24 publications

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“…These materials have demonstrated their ability to decrease the value of thermal conductivity in the matrices, which confers good thermal performance. Labouda et al [16] reviewed the issues of bio-based materials on thermal performance by conducting a comparative study of bio-based materials. This review focused in particular on Typha australis.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of Thermal and Mechanical Properties of Clay Reinforced with Typha australis: Influence of Length and Percentage of Fibers

Abbassi

Ngo

et al. 2020

Waste Biomass Valor

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This study presents the elaboration and characterization of a composite material based on Typha australis and clay for the use of an innovative building material in construction. For this purpose, various percentages ranging from 0 to 55% with a pitch of 15 were used. The aim is to find a better compromise between the thermal and mechanical properties of this composite material. According to this, the influence of the length of the 1 cm and 3 cm fibers was studied. As Typha australis is very porous, the hydric properties of the material studied in this work show that its porosity increases the rate of water absorption following a logarithmic law and the mass loss of the composite material evolves exponentially as a function of time. The mass increases when the percentage of fibers is low. The thermophysical property of Typha australis is 0.06 W/m K. That property allows us to state that Typha australis can be used for thermal insulation. The thermophysical properties of the composite material show that the thermal conductivity decreases as the percentage and length of fibers increase. In fact, the thermal conductivity of the clay is 1.03 W/m K while the mixture of clay with 55% of 1 cm fibers gave a thermal conductivity of 0.146 W/m K. The mixture of clay with the same percentage of 3 cm fibers gave a thermal conductivity of 0.113 W/m K. Nevertheless, the fibers have a negative effect on the mechanical properties and the increase in the length of the fibers improves the flexural strength.

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Section: Introductionmentioning

confidence: 99%

Experimental Investigation of Thermal and Mechanical Properties of Clay Reinforced with Typha australis: Influence of Length and Percentage of Fibers

Abbassi

Ngo

et al. 2020

Waste Biomass Valor

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“…Typha. The resource of typha is estimated at more than 3 million hectares around the Senegal river, corresponding to a capacity of 520,000 t of dry matter available annually (Ba et al, 2020;Diaw et al, 2022). To use typha as a building material, the plant has undergone several transformations (cutting, drying, and grinding).…”

Section: Raw Materialsmentioning

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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“…Nowadays, the sector of building and residential is responsible for 45% of energy consumption in France, as well as 26% of emissions of global warming gases [ 1 ]. The use of bio-based materials in the construction sector as insulating and supporting materials appears to be an important solution: they have low thermal conductivity, relatively high specific capacity, and can regulate temperature and humidity in enclosed spaces, which leads to the reduction of building energy consumption [ 2 , 3 , 4 , 5 ].…”

Section: Introductionmentioning

confidence: 99%

Physical and Mechanical Properties of Rapeseed Straw Concrete

et al. 2022

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This paper investigates an innovative building material based on rapeseed concrete. This material is a non-load-bearing insulating concrete, which is intended for use in the construction of wood-frame walls thanks to its thermophysical properties. It is composed of particles of rapeseed straw, lime, and cement. First, this work proposes to characterize rapeseed straw aggregates according to the place of cultivation, the year of harvest, and the size of the straw strands. For this purpose, straws of three different origins and different years of harvest were chosen. Aggregate sizes of 10 mm and 20 mm in length were selected. In a second step, this study focuses on the effect of the type of rapeseed straw aggregates on the mechanical resistance and thermal conductivity of bio-based concrete. The results obtained showed that the influence of the different parameters on the compressive strength was stronger than that on the thermal conductivity. On the one hand, rapeseed concrete made with 10 mm straw exhibited a lower thermal conductivity, averaging at 0.073 W.m−1.K−1. On the other hand, concrete manufactured with the 20 mm size aggregates demonstrated a higher mechanical strength, which remained relatively low and closer to 0.22 MPa. Finally, 20 mm-long aggregates offered the best compromise between mechanical and thermal resistance.

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The Challenges of Local and Bio-Sourced Materials on Thermal Performance: Review, Classification and Opportunity

Cited by 13 publications

References 24 publications

Experimental Investigation of Thermal and Mechanical Properties of Clay Reinforced with Typha australis: Influence of Length and Percentage of Fibers

Experimental Investigation of Thermal and Mechanical Properties of Clay Reinforced with Typha australis: Influence of Length and Percentage of Fibers

Variability of mechanical performance of cement-typha insulation materials

Physical and Mechanical Properties of Rapeseed Straw Concrete

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