Role of coconut coir fiber in concrete

Syed, Habibunnisa; Nerella, Ruben; Madduru, Sri Rama Chand

doi:10.1016/j.matpr.2020.01.477

Cited by 37 publications

(19 citation statements)

References 6 publications

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“…This process was repeated up to three times. The fibers were undergone to natural drying process under room temperature for 24 hr and finally, it was placed into the oven under 30 °C temperature for 10 to 12 minutes to remove the remaining moisture on the fiber surface (Syed et al, 2020). These cleaned coir fibers were used for the characterization process.…”

Section: Methodsmentioning

confidence: 99%

“…When reviewing past literature (Syed et al, 2020;Hussain, 2011;Putra et al, 2020;Hwang et al, 2016) it revealed that the coir fiber is having significant properties and coir fibers can be used as a reinforcing material in polymer-based lightweight composites. Many researches have been performed with polymer matrix composites using coconut fibers.…”

Section: Characterization Of Physical Chemical and Mechanical Properties Of Sri Lankan Coir Fibersmentioning

confidence: 99%

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Characterization of Physical, Chemical and Mechanical Properties of Sri Lankan Coir Fibers

Dharmaratne¹,

Galabada²,

Jayasinghe³

et al. 2021

J. Ecol. Eng.

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This study was carried out to determine the characterization of brown coir fiber which is used as a potential reinforcement in polymer composites. The fiber is extracted from the husk of the coconut seeds which are collected in Sri Lanka. Anyhow the above-mentioned characterization can hardly be seen when it comes to the Sri Lankan context. Since the evaluation of their physical, mechanical, and chemical properties are significant before commencing the material development process and applications for this fiber. Several testing were carried out to evaluate the above-mentioned properties. There, the functional groups of coir fiber were obtained by Fourier Transform Infrared analysis and Crystallinity Index and Crystallite size were determined by X-ray diffraction analysis. The surface morphology and cross-sectional features were investigated through Scanning Electron Microscopy. The thermo-gravimetric method was adopted to study the thermal stability of coir fiber. The density and diameter of coir fiber were measured utilizing pychometric method and optical microscope respectively. Tensile strength was measured using an electronic tensometer and then find out the tensile strength, modulus of elasticity, and elongation at breaking point. The average density of brown coir fibers was 1.018 g/cm 3 and average diameters were 0.30 mm. The Crystallinity Index and the crystal-line size were 37.28% and 0.4331 nm respectively. Ultimate tensile strength, Young's modulus, and Elongation of the coir fiber were ranging from 94-159 MPa, 1.2-1.8 GPa, and 21-67%, respectively.

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Section: Methodsmentioning

confidence: 99%

Section: Characterization Of Physical Chemical and Mechanical Properties Of Sri Lankan Coir Fibersmentioning

confidence: 99%

Characterization of Physical, Chemical and Mechanical Properties of Sri Lankan Coir Fibers

Dharmaratne¹,

Galabada²,

Jayasinghe³

et al. 2021

J. Ecol. Eng.

View full text Add to dashboard Cite

show abstract

“…It was placed in an oven under 30 0 C temperature for 10 to 12 minutes. This process helps to remove the remaining moisture on the fibre surface [39].…”

Section: Methodsmentioning

confidence: 99%

Preliminary Investigation of the Suitability of Coir Fibre and Thermoplastic Waste as a Construction Material

et al. 2021

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Waste polyethylene creates serious environmental and social problems in Sri Lanka. The amount of waste polyethylene increases daily, further aggravating environmental and social issues. Finding out the most suitable solution for this is a vital requirement. This research focuses on investigating the possibilities to convert this waste polyethylene as a sustainable construction material by combining it with readily available coconut fibre. A preliminary investigation was carried out on thermoplastic/coconut fiber composites to evaluate their suitability in the construction industry. Composite sheets, 2.5 mm and 3.2 mm thick, were developed by varying coir fibre weight with a suitable polymer matrix using a hot press machine. In this step, mechanical properties of the composite material were measured through tensile and bending tests. The tests were carried out complying with ASTM D3039 and ASTM D790, respectively. The surface morphology of coir fiber and the fractured surface of failure material were investigated through Scanning Electron Microscopy (SEM). Maximum tensile strength was observed as 6.75 N/mm 2 when the coir wt. fraction is inbetween 20-30% by total weight. The maximum bending strength was 29.85 N/mm 2 when the coir fraction is almost 25% by total weight. The corresponding mechanical properties are compared with the available materials in the industry.

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“…Until now, the feasibility of coir as a fiber reinforcement for cementitious materials has been examined by several researchers [ 40 , 41 , 42 , 43 , 44 ]. Ali et al [ 45 ] investigated the dynamic properties of medium strength concrete (MSC) made with coir.…”

Section: Introductionmentioning

confidence: 99%

Development of Ductile and Durable High Strength Concrete (HSC) through Interactive Incorporation of Coir Waste and Silica Fume

et al. 2022

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The issue of brittleness and low post-peak load energy associated with the plain HSC led to the development of fiber-reinforced concrete (FRC) by using discrete fiber filaments in the plain matrix. Due to the high environmental impact of industrial fibers and plasticizers, FRC development is ecologically challenged. Sustainability issues demand the application of eco-friendly development of FRC. This study is aimed at the evaluation of coir as a fiber-reinforcement material in HSC, with the incorporation of silica fume as a partial replacement of cement. For this purpose, a total of 12 concrete mixes were produced by using three different doses of coir (0%, 1%, 1.5%, and 2% by wt. of binder) with silica fume (0%, 5%, and 10% as volumetric replacements of cement). The examined parameters include compressive strength, shear strength, splitting tensile strength, ultrasonic pulse velocity, water absorption, and chloride ion permeability. The scanning electron microscopy (SEM) technique was adopted to observe the microstructure of the CF-reinforced concrete. The results revealed that due to the CF addition, the compressive strength of HSC reduces notably; however, the splitting tensile strength and shear strength experienced notable improvements. At the combined incorporation of 1.5% CF with 5% silica fume, the splitting tensile strength and shear strength of the concrete experienced improvements of 47% and 70%, respectively, compared to that of the control mix. The CF incorporation is detrimental to the imperviousness of concrete. The combined incorporation of CF and silica fume is recommended to minimize the negative effects of CF on the permeability resistance of concrete. The SEM results revealed that CF underwent a minor shrinkage with the age.

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Role of coconut coir fiber in concrete

Cited by 37 publications

References 6 publications

Characterization of Physical, Chemical and Mechanical Properties of Sri Lankan Coir Fibers

Characterization of Physical, Chemical and Mechanical Properties of Sri Lankan Coir Fibers

Preliminary Investigation of the Suitability of Coir Fibre and Thermoplastic Waste as a Construction Material

Development of Ductile and Durable High Strength Concrete (HSC) through Interactive Incorporation of Coir Waste and Silica Fume

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