Contribution to the development of a sand concrete lightened by the addition of barley straws

Belhadj, B.; Bédérina, Madani; Makhloufi, Zoubir; Dheilly, Rose-Marie; Montrelay, Nicolas; Quéneudec, M.

doi:10.1016/j.conbuildmat.2016.03.067

Cited by 57 publications

(27 citation statements)

References 26 publications

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“…The presence of natural fibers in cement composites has been stated to be a major factor for low thermal conductivity (TC) because it causes the disruption of the mineral structure of the cement mortars. This is also coupled with the creation of voids and pores within the composite thereby reducing the heat transfer potential [49]. The thermal conductivity (Table 5) showed that the least value belongs to mix V (0.620 W/mK) with the least cement replacement (10% WBA) while the highest TC was obtained from composition with highest cement replacement (25% WBA) at 0.628 W/mK.…”

Section: Thermal Conductivitymentioning

confidence: 99%

Development of banana fibers and wood bottom ash modified cement mortars

Akinyemi

Dai

2020

Construction and Building Materials

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Section: Thermal Conductivitymentioning

confidence: 99%

Development of banana fibers and wood bottom ash modified cement mortars

Akinyemi

Dai

2020

Construction and Building Materials

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“…Surprisingly, the literature about barley straw reinforced polymers is scarce. Barley straws are mainly used as concrete or elastomer fillers [29][30][31][32]. Hyvärinen and Kärki explored using barley straw instead of wood fibers as polypropylene reinforcement [33].…”

Section: Introductionmentioning

confidence: 99%

Feasibility of Barley Straw Fibers as Reinforcement in Fully Biobased Polyethylene Composites: Macro and Micro Mechanics of the Flexural Strength

et al. 2020

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Awareness on deforestation, forest degradation, and its impact on biodiversity and global warming, is giving rise to the use of alternative fiber sources in replacement of wood feedstock for some applications such as composite materials and energy production. In this category, barley straw is an important agricultural crop, due to its abundance and availability. In the current investigation, the residue was submitted to thermomechanical process for fiber extraction and individualization. The high content of holocellulose combined with their relatively high aspect ratio inspires the potential use of these fibers as reinforcement in plastic composites. Therefore, fully biobased composites were fabricated using barley fibers and a biobased polyethylene (BioPE) as polymer matrix. BioPE is completely biobased and 100% recyclable. As for material performance, the flexural properties of the materials were studied. A good dispersion of the reinforcement inside the plastic was achieved contributing to the elevate increments in the flexural strength. At a 45 wt.% of reinforcement, an increment in the flexural strength of about 147% was attained. The mean contribution of the fibers to the flexural strength was assessed by means of a fiber flexural strength factor, reaching a value of 91.4. The micromechanical analysis allowed the prediction of the intrinsic flexural strength of the fibers, arriving up to around 700 MPa, and coupling factors between 0.18 and 0.19, which are in line with other natural fiber composites. Overall, the investigation brightness on the potential use of barley straw residues as reinforcement in fully biobased polymer composites.

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“…The sand concrete lightened by the addition of plant fibres is an environmental and sustainable approach. These fibres help to improve the performance and behaviour of sand concrete, particularly with regard to lightness, thermal insulation and taking the environment into account while preserving the natural aggregates of concrete [1,2], where plant fibres partially replace the ordinary sand used in the concrete formulation. Lightened concrete is used for rehabilitation works and non-structural elements, such as those used in non-load bearing walls and thermal insulation [3].…”

Section: Introductionmentioning

confidence: 99%

Valorization of Waste in Sand Concrete Based on Plant Fibres

Rihia

Hebhoub

Kherraf

et al. 2019

Civil and Environmental Engineering Reports

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The introduction of treated plant fibres into sand concretes leads to a reduction in density, improved ductility and thermal conductivity, and makes sand concrete an environmentally friendly and ecological material. The recovery of waste in this type of material allows the production of new ecological and sustainable materials used either in the new construction or in the rehabilitation of old buildings. In this context, a comparative study was based on the valorisation of marble and ceramic waste as sand in sand concrete made from straw fibres. To carry out this study, we introduced these wastes at substitution rates of 10% and 20%, separated and mixed, and studied the development of the properties of these concretes (density, workability, air content, compressive strength and bending tensile strength) and their behaviour with respect to durability (capillary and immersion absorption and chloride penetration). The study shows that the recovery of this waste as sand in sand concrete based on straw fibres gives satisfactory results. The chemical resistance, thermal conductivity and microstructure are under study, the results of which will be the subject of another publication.

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Contribution to the development of a sand concrete lightened by the addition of barley straws

Cited by 57 publications

References 26 publications

Development of banana fibers and wood bottom ash modified cement mortars

Development of banana fibers and wood bottom ash modified cement mortars

Feasibility of Barley Straw Fibers as Reinforcement in Fully Biobased Polyethylene Composites: Macro and Micro Mechanics of the Flexural Strength

Valorization of Waste in Sand Concrete Based on Plant Fibres

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