Sustainability of vegetable fibres in construction

Savastano, Holmer; Santos, S.F.; Agopyan, Vahan

doi:10.1533/9781845695842.55

Cited by 8 publications

(6 citation statements)

References 31 publications

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“…In 2004 the annual production of fibre in Brazil was about 139.7 thousand tonnes, making it the largest producer of sisal in the world. The Brazilian production is concentrated in the states of Bahia (87%) and Paraíba (7.4%), both located in the northeast region of the country 19,30 . The estimated amount of waste material generated from sisal industry is about 500000 tonnes (air dried basis, ~15% moisture content) a year in Brazil, mainly due to the low yield of rude mechanical extraction procedures combined with pour cultivation technologies.…”

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confidence: 99%

Treatments of non-wood plant fibres used as reinforcement in composite materials

̈ne

Bilba

Savastano³

et al. 2013

Mat. Res.

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During last three decades, the global need for affordable housing has stimulated extensive research on cementitious matrix composites 1-18. Different groups in tropical regions have conducted an important effort on the study of cementitious composite materials reinforced with vegetable fibres 1-6,12,16. Indeed, vegetable fibres offer a cheap and sustainable approach that can be used to reduce the overall cost of construction materials and electricity consumption. The goal for developing such alternative technologies is to promote sustainable building materials. Brazilian and Guadeloupean research groups have accumulated important knowledge on tropical vegetable fibres. This fundamental knowledge on non wood tropical plants can be useful for numerous applications such as fibre cement, green composites, particle boards and papermaking 5,19-24. The fibre reinforcement is necessary to improve mechanical properties of a given building material, which would be otherwise unsuitable for practical applications. A major advantage concerning fibre reinforcement of a brittle material (e.g., cement paste, mortar or concrete) is the composite behavior after cracking. Post-cracking toughness enhanced by fibres in the material may allow large-scale construction use of such composites 21. There are two approaches for the development of new composites. The first one is based on the production of thin flat or corrugated sheets of asbestos-free fibre cement. These components are produced by wellknown industrialscale processes such as Hatschek or other similar methods commercially used with high acceptance for building

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confidence: 99%

Treatments of non-wood plant fibres used as reinforcement in composite materials

̈ne

Bilba

Savastano³

et al. 2013

Mat. Res.

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“…The fibres were cleaned using 0.1N HCl (hydrochloric acid) by immersing for 5 hours to get away from possible attack from bacteria and fungi (Figure 3). Further, they were dried for 24 hours and separated into small bunched by binding with wire mesh [10].…”

Section: Treatment Of Agricultural Fibresmentioning

confidence: 99%

“…Typically, they are of many kinds based on the plant of origin, physical appearance and intended applications. For example, the bamboo and rattan are widely used as structural components, roofing, and wall cladding [10][11][12]. Straw bales are successfully used as wall insulators while hempcrete is found to be an excellent composite material moisture and fire control.…”

Section: Introductionmentioning

confidence: 99%

Bioclimatic aspects of recycled agricultural materials for sustainable green construction

Jayaraman,

Parthasarathy,

Vignesh

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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There is an increasing awareness for adapting bioclimatic construction practices using agro-based green building materials to reduce the global warming impacts pertaining to the construction sector. In addition, lightweight construction is an emerging field of infrastructural development aiming to reduce the deadweight of the building by employing low density materials. Unlike conventional building blocks, the lightweight materials can be prepared in larger size and integrated easily to reduce the overall cost of construction. However, there is a need to identify cheaper and energy-efficient materials to minimize the net carbon emissions and to optimize the functionalities for any specific applications. The present study deals with the preparation of lightweight panels from agricultural by-products such as coconut fibres and paddy straws by optimizing their mixture proportioning and internal pattern of arrangement after pre-treatment with polyethylene glycol. Based on the test results, the concrete panels made of paddy straw have shown the highest reduction in weight compared to the conventional specimens (by 40%) and specimens with coconut fibre (by 25%). The results indicate that the concrete specimens made of the selected agro-based materials have improved mechanical (strength and durability), thermal and bioclimatic properties. The reduction in carbon emission depicts the critical dependency of bioclimatic construction on the selection of green materials. Therefore, a design methodology for sustainability assessment of agro-based building materials is formulated here in order to justify their suitability as green building materials.

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“…Numerous studies [20,65,[77][78][79][80][81] have utilized the slurry vacuum dewatering technique to incorporate pulp fibers into the cement matrix, resulting in composites with randomly dispersed fibers (8 wt%). This was achieved by mixing the matrix materials with the appropriate amount of fiber in water to form a slurry of 20 wt% solids, which was then transferred to a drilled mold and subjected to vacuum pressure [77].…”

Section: Composite Productionmentioning

confidence: 99%

“…Organic fibers as reinforcement materials in building materials have received increased attention in recent years due to their potential to contribute to the construction industry's sustainability [80]. According to previous studies [117][118][119], it has been reported that the use of these organic fibers can significantly improve the mechanical properties, dimensional stability, and durability of building materials, while also reducing the environmental impact of traditional synthetic or asbestos fiber reinforcement extraction, processing, and disposal.…”

Section: Sustainability and Cost Analysismentioning

confidence: 99%

Review on the Application of Organic Fibers as Substitutes for Asbestos in Thin Fiber Cement Sheets from a Sri Lankan Perspective

Deegoda,

Buddika,

Yapa

et al. 2023

Sustainability

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In the past, asbestos siding, roofing, and ceiling sheets became more popular than conventional materials due to their high strength-to-weight ratio, durability, and low cost. However, it was later identified that most types of asbestos are carcinogenic and are responsible for major lethal diseases. In terms of developing a substitute for asbestos, different alternative organic fibers have been investigated as sustainable solutions. Therefore, this article reviewed the usability of organic fibers from wood, banana, bamboo, and coconut coir, which are locally available and abundant in the region, as a substitute for asbestos in the fiber cement industry in Sri Lanka. The quantitative physicomechanical properties of organic fiber and fiber cement composites were evaluated, and the effect of treatment methods on durability was discussed. The previous literature revealed that organic fiber cement thin sheets have comparable mechanical properties in comparison to composites reinforced with asbestos. Furthermore, this study found that these organic-fiber-based composites are energy-efficient and have improved fire resistance. However, the long-term performance is questionable. Hence, further studies on fiber treatment methods and composite durability are needed. Additionally, a comprehensive cost analysis of organic fiber cement composite is recommended to introduce organic fibers into commercial products.

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Sustainability of vegetable fibres in construction

Cited by 8 publications

References 31 publications

Treatments of non-wood plant fibres used as reinforcement in composite materials

Treatments of non-wood plant fibres used as reinforcement in composite materials

Bioclimatic aspects of recycled agricultural materials for sustainable green construction

Review on the Application of Organic Fibers as Substitutes for Asbestos in Thin Fiber Cement Sheets from a Sri Lankan Perspective

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