Multi-physical properties of a structural concrete incorporating short flax fibers

Page, Jonathan; Khadraoui, Fouzia; Boutouil, Mohamed; Gomina, Moussa

doi:10.1016/j.conbuildmat.2017.02.124

Cited by 93 publications

(44 citation statements)

References 33 publications

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“…However, studies have also pointed out some disadvantages of incorporating natural vegetable fibers in concrete. Most natural vegetable fibers have high water absorption capacity resulting in poor workability in fresh concrete, degrade in alkaline environment, and as a consequence, reduce desirable properties like tensile and bond strengths [9,[18][19][20][21]. Several treatments for these fibers, with the potential of negating the drawbacks have however been reported [6,7,9,[22][23][24][25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

Recent developments in the application of oil palm fibers in cement composites

Momoh

Osofero

2020

Front. Struct. Civ. Eng.

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Fibers obtained from different parts of the oil palm tree (Elaeis guineensis) have been under investigation for possible use in construction. Studies have been carried out investigating the engineering properties and possible applications of these fibers. However, the experimental methods employed and the values of mechanical and physical properties recorded by various authors are inconsistent. It has therefore become necessary to organize information which would be useful in the design of oil palm fiber cement composites and help researchers and engineers make informed decisions in further research and application. This review provides information about fibers from different parts of the oil palm, their properties, enhancement techniques, current and potential application in cement composites.

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Section: Introductionmentioning

confidence: 99%

Recent developments in the application of oil palm fibers in cement composites

Momoh

Osofero

2020

Front. Struct. Civ. Eng.

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“…Macropores increased from 27.01% in C0 to 40.64% and 38.81% in F1 and MF1, respectively. The increase is attributed to trapped air in the composite and increased porosity at the interfacial transition zone (ITZ) between the flax fibers and the matrix [16]. This suggests that the porosity increase at the ITZ was mainly due to the porous features of flax fiber, which leads to air import by the addition of fibers into the mixture.…”

Section: Pore Size Distributionmentioning

confidence: 99%

Strength and Damping Properties of Cementitious Composites Incorporating Original and Alkali Treated Flax Fibers

et al. 2019

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This experimental investigation focused on the mechanical and damping properties of raw and alkali treated flax fibers reinforced cementitious composites. The objective of this study was to research the influence of flax fiber for the damping properties of cementitious composites. The mechanical strengths were obtained using compressive and flexural tests and damping properties were measured using a dynamic mechanical analysis. Structural modifications to the treated flax fibers were analyzed using scanning electronic microscopy and mercury intrusion porosimetry. Results showed that cement compressive strength was decreased, and flexural strength was increased by the addition of untreated flax fibers. Alkali treatment improved the mechanical strength of flax reinforced cement. The addition of flax fibers improved cement damping properties, and the damping effect of untreated flax fibers was greater than that of alkali treated fibers. The loss tangent of the cementitious composites reinforced with raw and alkali treated flax fibers at an amount of 1 wt % of cement was improved by 45.83% and 37.5% at 20 Hz, respectively. The damping properties of flax fiber was attributed to friction between elementary fibers and between adjacent fiber cell walls and slipping between the fiber and matrix. Callouses, pectin, and lignocellulose in untreated flax fiber contributed to damping and their removal by alkali treatment was the main reason why untreated flax fibers had a greater damping effect as compared to alkali-modified flax fibers.

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“…The building sector alone consumes 40% of the total world energy, 25% of the global water and 40% of the total resources in the world; and responsible for one-third of the total emission of greenhouse gases. Differently put, there has been an increase in emission of about 39% from the pre-industrial era thereby representing an average annual growth rate of 3.7% [2]. According to Claramunt et al [3], the increasing levels of carbon dioxide in the atmosphere require urgent attention from all stakeholders in the construction industry.…”

Section: Introductionmentioning

confidence: 99%

Use of oil palm broom fibres for eco-friendly concrete

Momoh¹,

Osofero²

2019

Sustainable Construction Materials and Technologies (SCMT)

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The use of vegetative fibres in reinforcing concrete is currently attracting research attention because it is void of the high carbon footprint and cost associated with use of conventional reinforcements like steel. One of such vegetable fibres is the ribs of the leaflets of the oil palm tree whose only use has been for making brooms. However, these ribs referred to as Oil Palm Broom Fibres (OPBF) have mechanical characteristics similar to steel and can be incorporated in concrete to improve its mechanical properties. With a specific gravity of 0.84, an average length of 800mm and cross-sectional diameter varying between 0.20mm (at the tail) and 4.00mm (at the head), maximum tensile strength of 900MPa was recorded in the study, hence making the fibres superior to steel in terms of strength-to-weight ratio. Optical microscopy of fibre cross sections reveals randomly dispersed xylem cavities, a densely packed core but lightly packed cortex. This radial and longitudinal density gradient is responsible for the phenomenon whereby towards the cap of the fibres, the fibres are stiffer in bending but reduces in tensile strength. Investigation of mechanical properties of concrete incorporating OPBF as random fibre-reinforcement was carried out. Although the inclusion of OPBF in concrete reduces its compressive strength, the post-yield behaviour shows that energy absorption of the composite is enhanced, making OPBF-concrete a potential material for low-cost seismic construction.

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Multi-physical properties of a structural concrete incorporating short flax fibers

Cited by 93 publications

References 33 publications

Recent developments in the application of oil palm fibers in cement composites

Recent developments in the application of oil palm fibers in cement composites

Strength and Damping Properties of Cementitious Composites Incorporating Original and Alkali Treated Flax Fibers

Use of oil palm broom fibres for eco-friendly concrete

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