Development and characterization of thermal insulation materials from renewable resources

Viel, Marie; Collet, Florence; Lanos, Christophe

doi:10.1016/j.conbuildmat.2019.04.139

Cited by 45 publications

(28 citation statements)

References 19 publications

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“…However, based on the qualification that a material is qualified as insulating material when its thermal conductivity is less than 0.1 W.m −1 K −1 [19], the slight increase in the thermal conductivity values of the natural fiber reinforced PU foams induced by the addition of the fibers will not affect their application as thermal insulators since their thermal conductivity values were still much smaller than 0.1 W.m −1 K −1 . For comparison, the natural fiber reinforced PU foams in this research has lower or comparable thermal conductivity values with the bio-based thermal insulations as reported in previous researches [12][13][14][15]20].…”

Section: Resultssupporting

confidence: 66%

“…Atif et al (2019) developed water resistant hemp shiv based thermal lightweight insulations, and the composites showed low thermal conductivity values of 0.051−0.058 W.m −1 K −1 and relatively good compressive stress from 0.49 to 1.05 MPa [12]. Marie et al (2019) investigated the hemp shiv and corn cob residues as bio-based thermal insulation materials, and the obtained composites had thermal conductivity ranging between 0.0675 to 0.1479 W.m −1 K −1 [13]. Dang et al (2018) manufactured an environment-friendly insulation fiberboards derived from bamboo fibers and protein-based bone glue using hot-pressing method.…”

Section: Introductionmentioning

confidence: 99%

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Renewable natural resources reinforced polyurethane foam for use of lightweight thermal insulation

Shao

Zhang

Han

et al. 2020

Mater. Res. Express

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To obtain the energy-saving and environment-friendly lightweight bio-based thermal insulation, polyurethane matrix was incorporated with wood fiber, bamboo fiber, rice husk and liquefied polyol at different percentages (25%, 30%, and 35%). The results revealed that the apparent density for the natural fibers reinforced thermal polyurethane insulation was between 105 kg.m −3 and 178 kg.m −3 by adding 35% of the fibers into the polyurethane matrix. The thermal conductivity of the bio-based thermal insulation ranged from 0.045 to 0.065 W.m −1 K −1 , the addition of the natural fibers increased mechanical strength. The prepared bio-based insulation showed great potential for building thermal insulations with particularly low thermal conductivity (less than 0.065 W.m −1 K −1 ) and self-bearing strength.

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Section: Resultssupporting

confidence: 66%

Section: Introductionmentioning

confidence: 99%

Renewable natural resources reinforced polyurethane foam for use of lightweight thermal insulation

Shao

Zhang

Han

et al. 2020

Mater. Res. Express

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“…Previous studies [5][6][7][8][9][10][11] revealed improvements in the mechanical properties and durability of concrete mixtures, in which PC was partially replaced with wood ash or fly ash. Substituting aggregates with wood process waste such as wood chips, flax or hemp was also shown to enhance the mechanical or thermal properties of concrete mixtures [11][12][13][14][15][16][17][18]. Further research on fiber-reinforced concrete reported that the addition of synthetic fibers-such as polypropylene (PP), polyethylene (PE), polyvinyl alcohol (PVA)-or steel fibers could increase the fire resistance, ductility, tensile strength, impact resistance and toughness of concrete mixtures [19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties and Flexural Behavior of Sustainable Bamboo Fiber-Reinforced Mortar

Maier

Javadian²,

Saeidi³

et al. 2020

Applied Sciences

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In this study, a sustainable mortar mixture is developed using renewable by-products for the enhancement of mechanical properties and fracture behavior. A high-volume of fly ash—a by-product of coal combustion—is used to replace Portland cement while waste by-products from the production of engineered bamboo composite materials are used to obtain bamboo fibers and to improve the fracture toughness of the mixture. The bamboo process waste was ground and size-fractioned by sieving. Several mixes containing different amounts of fibers were prepared for mechanical and fracture toughness assessment, evaluated via bending tests. The addition of bamboo fibers showed insignificant losses of strength, resulting in mixtures with compressive strengths of 55 MPa and above. The bamboo fibers were able to control crack propagation and showed improved crack-bridging effects with higher fiber volumes, resulting in a strain-softening behavior and mixture with higher toughness. The results of this study show that the developed bamboo fiber-reinforced mortar mixture is a promising sustainable and affordable construction material with enhanced mechanical properties and fracture toughness with the potential to be used in different structural applications, especially in developing countries.

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“…Regarding the density, literature shows different values: for the bulk the density is about 390 kg m −3 , decreasing to close to 365 kg m −3 after extraction (Viel et al, 2019), while tests by Paiva et al (2012) on corn cobs report an average value of 212.11 kg m −3 .…”

Section: Residue Performancementioning

confidence: 98%

“…Physical properties. The average width of aggregates is 3.78 mm and the average length is 5.15 mm (Viel et al, 2019).…”

Section: Residue Performancementioning

confidence: 98%

Valorization of agro-industry residues in the building and environmental sector: A review

et al. 2020

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Environmental pollution has become a relevant issue as the population rises and resources decrease. Reuse and recycling still have the greatest potential as they turn the waste into a new resource, representing the ‘closed-loop’ step of a circular economy (CE). Looking for new applications for agro-industry waste represents both an environmental issue, as its incorrect disposal is a cause of pollution, and a chance to exploit zero-cost natural wastes. The present review, with around 200 articles examined, focuses on possible reuses of these residues in (a) building construction, as additives to produce thermal and acoustic insulation panels, and (b) in water treatments, exploited for removal of pollutants. The selected materials (coconut, coffee, corn, cotton and rice) have industry production wastes with suitable applications in both sectors and huge worldwide availability; their reuse may thus represent a new resource, with an impact based on the production rate and the possible replacement of current inorganic materials. Along with possible implementation of the selected materials in the building industry and environmental engineering, a brief description of the production and supply chain are provided.

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Development and characterization of thermal insulation materials from renewable resources

Cited by 45 publications

References 19 publications

Renewable natural resources reinforced polyurethane foam for use of lightweight thermal insulation

Renewable natural resources reinforced polyurethane foam for use of lightweight thermal insulation

Mechanical Properties and Flexural Behavior of Sustainable Bamboo Fiber-Reinforced Mortar

Valorization of agro-industry residues in the building and environmental sector: A review

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