Brazilian waste fibres as reinforcement for cement-based composites

Savastano, Holmer; Warden, Peter G.; Coutts, R. S. P.

doi:10.1016/s0958-9465(00)00034-2

Cited by 267 publications

(153 citation statements)

References 5 publications

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“…Some of the important parameters overall durability of the composite Viola Hospodarova, NadezdaStevulova, Jozef Junak, Anton Geffert, Frantisek Kacik and Cellulosic fibers have hydrophilic nature, and this attribute is causing an cement composites. The results (Fig.4) show an increase in water absorbability of cement composites with rising amount of cellulosic fibers accordance with published work [19]. Plasters reinforced with 2 % and 5 % cellulosic fibers in the range 12.2 % -13.5 %.…”

Section: Characterization Of Composite Propertiessupporting

confidence: 90%

Cement Materials Based on Cellulosic Fibers for Plasters

Hospodárová

Števulová

Junak

et al. 2017

Selected Scientific Papers - Journal of Civil Engineering

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This paper presents physical and mechanical properties of cementitious composites/plasters containing cellulosic fibers in portion 2.0% and 5.0% of filler replacement after 28 days of hardening. Cellulosic fibers (Greencel) originated from bleached wood pulp and unbleached waste paper used in this experimental work were characterized from the point of view cellulose structure. Experimental investigations reveal that adding cellulosic fibers reduces composites density (up to 8.2 %) in comparison with composites without any fibers. Moreover, the presence of wood pulp and recycled fibers in composites cause higher values of water absorbability than sample without fibers. Also, the decrease in compressive strength values for tested fiber cement plasters was observed (14.1 -18.0 MPa) in comparison to reference sample (26.6 MPa). But the identified compressive strength values are in accordance with European standard (5 MPa) for plasters.

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Section: Characterization Of Composite Propertiessupporting

confidence: 90%

Cement Materials Based on Cellulosic Fibers for Plasters

Hospodárová

Števulová

Junak

et al. 2017

Selected Scientific Papers - Journal of Civil Engineering

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“…The use of cellulosic or vegetable fibers has emerged during the last decades as an interesting option to substitute for asbestos, allowing the development of materials with good performance at relatively low cost [6][7][8][9]. Cellulosic fibers provide adequate stiffness, strength, and bonding capacity to cement-based matrices, enhancing their flexural strength, toughness, and crack resistance.…”

Section: Introductionmentioning

confidence: 99%

Natural fiber nonwoven reinforced cement composites as sustainable materials for building envelopes

Claramunt

Fernández-Carrasco

Ventura

et al. 2016

Construction and Building Materials

109

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This experimental research analyzes the mechanical performance and durability of façade pieces based on Portland cement matrix and flax nonwovens as reinforcement. Two types of pozzolanic additions (silica fume and metakaolin) combined with nonwovens subjected to different treatments to decrease their water absorption are analyzed as potential materials for fiber-cement sheets for building envelopes with high strength and durability. For this purpose, on the one hand, the mechanical performance and chemical composition of various ternary compositions were studied. On the other hand, various treatments were performed on the nonwovens and the nonwoven-matrix adherence was also analyzed. Finally, composites were prepared from some selected treated nonwovens and matrix mixtures, and their mechanical properties and durability were evaluated under four-point bending tests after 28 days of curing in a humidity chamber and after accelerated aging. The composites developed with the treated nonwovens presented very high performance combined with enough durability to be potential candidates for the development of sustainable materials for building envelopes. Highlights-Mechanical performance and durability of OPC/flax nonwovens composites for façade pieces is explored -The effect of two pozzolanic additions combined with nonwoven treatment is evaluated -Significant improvements in the durability using treated nonwovens 3

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“…The application of very low-value agricultural waste as granular additive in civil construction and engineering materials is a worldwide trend, not only in function of economical interests but also due to growing concern about environmental aspects. The use of locally available raw materials such as sisal, banana, coconut and eucalyptus in fiber-reinforced composites and in lightweight concretes, for example, has been the subject of continuous evaluation (savastano et al, 2000;Agopyan et al, 2005;Coutts, 2005).…”

Section: Resultsmentioning

confidence: 99%

An evaluation of fibrous structure and physical characteristics of Cutia nut (Couepia edulis Prance) shell

Assis¹,

Pessoa

2009

Acta Amaz.

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The Cutia-nut (Couepia edulis Prance), a species originally from the Amazon region, has a kernel with reasonable nutritional value and a hard and thick woody shell that constitute most of the fruit. After the kernel removal, the shells are regarded as waste. The possibility of using such shells, as raw material for burning or charcoal production, as well as milled residue for structural reinforcement materials is quite feasible, considering environmental and economical aspects. There is, however, a complete lack of characterization of the Cutia-nut shell and other similar species which can aggregate desirable qualities for application as engineering material. in this study some analyses are presented aiming at providing information for potential uses of these residues. in general, the shells follow a regular shape with certain dimensional proportionality to the kernel. The shell is a fibrous material with high lignin content, present low water absorption and high resistance to natural degradation.KEYWOrDs: Cutia-nut, shell characterization, fibrous structure, natural waste utilization Uma avaliação da estrutura fibrosa e das características físicas da casca da Castanha de cutia (Couepia edulis Prance) rEsumO A castanha-de-cutia (Couepia edulis Prance), uma espécie típica da região amazônica, é possuidora de uma amêndoa de razoável valor nutricional e caracterizada por ter uma casca espessa e altamente resistente, que constitui a maior parte do fruto. esta casca, após a retirada da amêndoa, é totalmente descartada. A possibilidade do aproveitamento das cascas, seja como matéria prima para a queima ou simples confecção de carvão, ou como elemento para uso como aditivo de reforço em materiais estruturais é plenamente viável, não somente do ponto de vista ambiental mas também econômico. Há, contudo, uma ausência total de caracterizações da casca da castanha-de-Cutia e de demais espécies tropicais similares que potencialmente podem agregar qualidades desejadas para aplicações como materiais de engenharia. Neste trabalho são apresentadas algumas análises realizadas que podem vir a subsidiar o potencial emprego desses resíduos. De um modo geral, as cascas apresentam formatos regulares com certa proporcionalidade dimensional com a amêndoa. são fibrosas e com alto teor de lignina o que garante baixa absorção de água e alta resistência à degradação natural.PALAVrAs-cHAVE: Castanha de Cutia, caracterização da casca, estrutura fibrosa, usos de resíduos naturais

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Brazilian waste fibres as reinforcement for cement-based composites

Cited by 267 publications

References 5 publications

Cement Materials Based on Cellulosic Fibers for Plasters

Cement Materials Based on Cellulosic Fibers for Plasters

Natural fiber nonwoven reinforced cement composites as sustainable materials for building envelopes

An evaluation of fibrous structure and physical characteristics of Cutia nut (Couepia edulis Prance) shell

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