Prospects for natural fibre reinforced concretes in construction

Aziz, M. A.; Paramasivam, P.; Lee, S.L.

doi:10.1016/0262-5075(81)90006-3

Cited by 151 publications

(71 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Des études [2] ont montré l'existence d'un optimum du taux volumique et de la longueur de fibres pour différents types de fibre (par exemple : 4% et 38 mm pour des fibres de coco, 3% et 25 mm pour des fibres de jute). Dans cette étude (Figure 3 à 6), nous av pour la teneur en fibres et de 30mm pour la longueur dans un mélange avec super …”

Section: Résistance à La Flexionunclassified

See 1 more Smart Citation

Caractérisation microstructurale et mécanique d’un composite cimentaire renforcé par des fibres de lin

Tung

Khadraoui

Boutouil

et al. 2012

MATEC Web of Conferences

View full text Add to dashboard Cite

Abstract. With the purpose of the flax fibre valuing in construction materials, this study focuses on the characterizations mechanical and microstructural of flax fibre cement composite reinforced. The mechanical strength was studied as the function of fibre volume ratio and length. Meanwhile, the microstructural analysis investigated the homogeneity of fibre scattering, the interaction fibre/cement matrix and the influence of flax fibres on the defects microstructures. The results show the interesting mechanical properties of flax fibre in comparison with other fibre vegetable. But they are damaged in an alkaline environment such as concrete or cement composite. In fresh state, a good adherence between fibre and cement matrix was found. But as hydrophilic, the flax fibres absorb water and become inflated. Afterwards, the fibres return deflated at the drying time and this dry/wet cycling reduce the fibre/matrix bond. Being reinforced by the flax fibres, the brute failure of cement materials was replaced by the one more ductile when the fibre ratio increased. This transition was evaluated by the toughness indexes that allow measuring the energy absorption of flax fibre.Résumé. Dans la perspective de valorisation des fibres de lin dans les matériaux de construction, la présente étude s'intéresse à la caractérisation microstructurale et mécanique d'un composite cimentaire renforcé par des fibres de lin. Les analyses microstructurales au MEB ont été menées pour évaluer l'homogénéité de la distribution des fibres, la qualité de l'interaction fibre/matrice et l'influence de leur présence sur les défauts microstructuraux. Le comportement mécanique en flexion du mortier renforcé par les fibres de lin est étudié en fonction de la longueur et la teneur en fibres. Les résultats indiquent une bonne adhésion entre les fibres et la matrice à l'état frais. Mais les fibres étant hydrophiles, elles gonflent pendant la prise du ciment et le retrait lors du séchage engendre alors des déchaussements. Les résultats de caractérisation mécanique sont encourageants. Tout d'abord, la fissuration du mortier due au retrait au jeune âge est fortement réduite du fait de la présence des fibres. Ensuite, la rupture brutale de la matrice en monolithe laisse place à un comportement quasi-ductile quand la teneur ou la This is an Open Access article distributed under the terms of the Creative Commons Attribution License 2.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

show abstract

Section: Résistance à La Flexionunclassified

“…Dans le monde des fibres végétales, les fibres de aux performances élevées [1,2], sont utilisées depuis plusieurs années dans l'industrie automobile. La valorisation de cette ressource locale constitue une motivation non négligeable à mener cette étude [3].…”

Section: Introductionunclassified

Caractérisation microstructurale et mécanique d’un composite cimentaire renforcé par des fibres de lin

Tung

Khadraoui

Boutouil

et al. 2012

MATEC Web of Conferences

View full text Add to dashboard Cite

show abstract

“…Product design, production and building techniques were also investigated. Aziz et al (1981) has discussed prospects for natural fibre reinforced concrete in construction. Factors affecting the properties in the fresh and hardened states were critically discussed.…”

Section: Physical and Mechanical Properties Of The Compositesmentioning

confidence: 99%

The Use of Sisal Fibre as Reinforcement in Cement Based Composites

Filho

Joseph

Ghavami

et al. 1999

Rev. bras. eng. agríc. ambient.

View full text Add to dashboard Cite

The inclusion of fibre reinforcement in concrete, mortar and cement paste can enhance many of the engineering properties of the basic materials, such as fracture toughness, flexural strength and resistance to fatigue, impact, thermal shock and spalling. In recent years, a great deal of interest has been created worldwide on the potential applications of natural fibre reinforced, cement based composites. Investigations have been carried out in many countries on various mechanical properties, physical performance and durability of cement based matrices reinforced with naturally occurring fibres including sisal, coconut, jute, bamboo and wood fibres. These fibres have always been considered promising as reinforcement of cement based matrices because of their availability, low cost and low consumption of energy. In this review, the general properties of the composites are described in relation to fibre content, length, strength and stiffness. A chronological development of sisal fibre reinforced, cement based matrices is reported and experimental data are provided to illustrate the performance of sisal fibre reinforced cement composites. A brief description on the use of these composite materials as building products has been included. The influence of sisal fibres on the development of plastic shrinkage in the pre-hardened state, on tensile, compressive and bending strength in the hardened state of mortar mixes is discussed. Creep and drying shrinkage of the composites and the durability of natural fibres in cement based matrices are of particular interest and are also highlighted. The results show that the composites reinforced with sisal fibres are reliable materials to be used in practice for the production of structural elements to be used in rural and civil construction. This material could be a substitute asbestos-cement composite, which is a serious hazard to human and animal health and is prohibited in industrialized countries. The production of sisal fibres as compared with synthetic fibres or even with mineral asbestos fibres needs much less energy in addition to the ecological, social and economical benefits.Key words: composite material, natural fibres, concrete, mortar, strength, stiffness, durability USO DAS FIBRAS DE SISAL COMO ELEMENTOS DE REFORÇO DE COMPÓSITOS A BASE DE CIMENTO RESUMOA inclusão de fibras em concretos, argamassas e pastas de cimento melhora propriedades básicas desses materiais tais como a tenacidade na fratura, a resistência à flexão, ao impacto, à choques térmicos e à desagregação. Nos últimos anos tem se observado, em todo o mundo, um grande interesse na aplicação de materiais compósitos, com matrizes a base de cimento, reforçados com fibras vegetais

show abstract

“…Jute is a soft, long and shiny vegetable fiber which can be spun into coarse and strong threads. Jute is also one of the most affordable natural fibers and is second only to cotton in amount produced and variety of uses of vegetable fibers [1].…”

Section: Introductionmentioning

confidence: 99%