scholarly journals Study of sisal fibre reinforced concrete in lintels

2021 ◽  
Vol 10 (1) ◽  
Author(s):  
Vinay Kumar ◽  
G.V. Yashasvi ◽  
S.K. Sudarshan
Keyword(s):  
Mechanical Characteristics ◽  
Sisal Fiber ◽  
Fibre Reinforced Concrete ◽  
Flexural Test ◽  
Compressive Test ◽  
Sisal Fibre ◽  
Specific Strength ◽  
Sisal Fibers ◽  
New Applications ◽  
Split Tensile Test

Concrete made with Portland cement has certain characteristics: - it is relatively strong in compression but weak in tension and tends to fail quickly when subjected to Tension. The deficiency in tension can be mitigated with conventional reinforcement & to some extent by the inclusion of a sufficient volume of Fibers. Change in the behavior of the Fiber – matrix composite after it has cracked, is due to the addition of Fibers (Balasubramanyan et al. 2015) Sisal Fiber is a promising concrete composite on account of its low density, less cost, increased specific strength and modulus, zero health risk, and it is easily cultivated in few countries including India. There has been an increasing interest in finding new applications for sisal-fiber which is traditionally used for making ropes, mats, carpets, fancy articles and others. The purpose of this research is to investigate the use of sisal fibers in concrete to enhance the mechanical characteristics of concrete and compare the differences in properties of concrete containing no fibers with fibers. The correlation on the effects of different type and geometry of fibers to the concrete is also the aim of the research. The scrutiny was carried out using several tests, which contained workability test, compressive test, split tensile test & flexural test. A total of ten mix batches of concrete containing 0%, 0.6%, 0.7%, 0.8% dosage of Fiber were cast. M25 grade concrete is considered for research as this grade is seen maximum consumption in industry. Keywords: concrete, sisal fibre, resistance.

scholarly journals Engineering Properties of Bentonite-Lime-Phosphogypsum Composite Reinforced with Treated Sisal Fibers

2017 ◽  
Author(s):  
Sujeet Kumar ◽  
Vidya Tilak B. ◽  
Rakesh Kumar Dutta
Keyword(s):  
Chemical Treatment ◽  
Fibre Composite ◽  
Fiber Composite ◽  
Tensile Load ◽  
Engineering Properties ◽  
Sisal Fiber ◽  
Sisal Fibre ◽  
Indirect Tensile ◽  
Sisal Fibers ◽  
Ductile Behavior

The present work primarily investigates the unconfined compressive strength, the tensile load-diametral strain, the toughness characteristics and the shear strengths of bentonite-lime-phosphogypsum-treated sisal fibre composite. The unconfined compressive strengths and tensile strengths were obtained using the unconfined compressive test and indirect tensile test respectively. The results revealed that the unconfined compressive stress, the deviator stress and the tensile load at failure of bentonite-lime-phosphogypsum composite with untreated sisal fibres could be improved by the successive chemical treatment with sodium periodate, p-aminophenol and sodium hydroxide. The brittleness index and deformability index indicated a change from the brittle to ductile behavior of the bentonite-lime-phosphogypsum-untreated sisal fiber composite, with the chemical treatment.

scholarly journals MECHANICAL PROPERTIES OF THE VIET NAM SISAL FIBRE REINFORCED POLYPROPYLENE COMPOSITE

2011 ◽  
Vol 14 (2) ◽  
pp. 29-36
Author(s):  
Nieu Huu Nguyen ◽  
Binh Thanh Phan ◽  
Sau Huynh
Keyword(s):  
Mechanical Properties ◽  
Impact Strength ◽  
Loss Modulus ◽  
Flexural Modulus ◽  
Dynamic Mechanical Properties ◽  
Sisal Fiber ◽  
Sisal Fibre ◽  
Dynamic Mechanical ◽  
Sisal Fibers ◽  
The Impact

The static mechanical and dynamic mechanical properties of the treated sisal fiber reinforced polypropylene composites were improved by adding the compatiblizer PPgMA (polypropylene-grafted-maleic anghydride). The mechanical properties of the composites have been evaluated. By increasing PPgMA dosages from 2% and 3.5% by weight of PP matrix; the impact strength of the composites were significantly improved by 27% and 38%; the elongation increased by 21% and 36%; the tensile strength increased by 35% and 95%; the elastic modulus increased by 21% and 94% and the flexural modulus increased by 2% and 83% respectively. The dynamic mechanical properties (the storage modulus E’, the loss modulus E” and the loss factor tanδ) have been investigated in relation to the compatibility between the PP matrix and the treated sisal fibers. E’ and E” increased by increasing dosage of PPgMA and Tg decreased a little when increasing the contents of PPgMA. At higher temperatures, tanδ increased and at lower temperature tanδ decreased when increasing dosage of PPgMA. It is shown that PP/treated sisal fibers/PPgMA composites have shown the effects of cohesion when increasing the PPgMA. The fiber dispersion was studied by the transmission optical microscope (TOM). The morphology of the composites samples fractured by the impact strength tests have been studied using scanning electronic microscopy (SEM). The results show the improvement of the interaction forces between treated sisal fibers and PP matrix at higher levels of PPgMA.

scholarly journals Characterization and treatment of sisal fiber residues for cement-based composite application

2014 ◽  
Vol 34 (5) ◽  
pp. 812-825 ◽  
Author(s):  
Paulo R. L. Lima ◽  
Rogério J. Santos ◽  
Saulo R. Ferreira ◽  
Romildo D. Toledo Filho
Keyword(s):  
Tensile Testing ◽  
Agricultural Residues ◽  
Sisal Fiber ◽  
Agricultural Product ◽  
Flexural Test ◽  
Fiber Production ◽  
Commercial Use ◽  
Pull Out ◽  
Sisal Fibers ◽  
Scanning Electron

Sisal fiber is an important agricultural product used in the manufacture of ropes, rugs and also as a reinforcement of polymeric or cement-based composites. However, during the fiber production process a large amount of residues is generated which currently have a low potential for commercial use. The aim of this study is to characterize the agricultural residues by the production and improvement of sisal fiber, called field bush and refugo and verify the potentiality of their use in the reinforcement of cement-based composites. The residues were treated with wet-dry cycles and evaluated using tensile testing of fibers, scanning electron microscopy (SEM) and Fourier transform infrared (FTIR) spectroscopy. Compatibility with the cement-based matrix was evaluated through the fiber pull-out test and flexural test in composites reinforced with 2 % of sisal residues. The results indicate that the use of treated residue allows the production of composites with good mechanical properties that are superior to the traditional composites reinforced with natural sisal fibers.

Test Comparison Research Mechanics Performance between Sisal Fiber Concrete and Rubber Powder Concrete

2011 ◽  
Vol 243-249 ◽  
pp. 494-498
Author(s):  
Hui Ming Bao
Keyword(s):  
Tensile Strength ◽  
Compressive Strength ◽  
Flexural Strength ◽  
Sisal Fiber ◽  
Environment Friendly ◽  
Rubber Powder ◽  
Comparison Research ◽  
Mechanics Performance ◽  
Fiber Concrete ◽  
Sisal Fibers

By means of the tests on the mechanics performance of the reinforcing concrete mixed with sisal fibers or rubber powder of certain content are investigated. The compressive strength, tensile strength and flexural strength, etc. are compared. The test indicates that when the test condition is same, the compressive strength, tensile strength and flexural strength of the sisal fibers concrete are better than those of the rubber powder’s. The sisal fiber concrete is environment friendly than the rubber powder concrete. And it has widely value of spread and utilization.

scholarly journals Influence of Flax Fibre Hybridization on Mechanical Behaviour of Sisal Fibre-Polypropylene Composites Prepared with an Injection Moulding Machine

2021 ◽  
Vol 2021 ◽  
pp. 1-7
Author(s):  
J. Allen Jeffrey ◽  
A. Sivakumar ◽  
R. Naveen Kumar ◽  
A. Anbazhagan ◽  
G. Manojkumar ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Flax Fibre ◽  
Physical Parameters ◽  
Sisal Fibre ◽  
Polypropylene Composites ◽  
Specific Strength ◽  
Flax Fibres ◽  
Low Weight ◽  
Moulding Machine ◽  
Low Modulus

Due to their low weight, high specific strength, and low environmental impact, sisal fibre-polypropylene composites have gained popularity. However, the material has a low modulus and poor moisture resistance, among other shortcomings. This study investigated how flax fibre hybridization affects the physical parameters of sisal fibre-polypropylene composites. We used maleic anhydride-grafted polypropylene to improve compatibility between fibres and polypropylene. Adding flax fibres to polypropylene-silica composites resulted in increased tensile strength, flexibility, and impact strength, according to researchers. Water resistance was further improved by adding flax fibres. Tensile strength values of polypropylene-sisal fibre composites filled with 0, 5, 10, 15, and 20 wt% of flax fibres were 29.46, 30.56, 31.57, 33.12, and 34.64 MPa, respectively.

scholarly journals Sisal fiber as an alternative to the construction of flexible fiber filters applied to water treatment

2019 ◽  
Vol 9 (4) ◽  
pp. 608-615
Author(s):  
Alice K. M. Morita ◽  
Marco A. P. Reali
Keyword(s):  
Low Income ◽  
Aluminum Sulfate ◽  
Natural Fibers ◽  
Low Income Countries ◽  
Sisal Fiber ◽  
Internal Diameter ◽  
Flexible Fiber ◽  
Filtration System ◽  
Polyamide Fibers ◽  
Sisal Fibers

Abstract The recently developed flexible fiber filters (3Fs) are modular filtration units, which can satisfactorily remove solids at high filtration rates. Normally built with polyamide fibers, it is supposed that natural fibers can be used alternatively. This paper evaluated the performance of 3Fs using as filtering media sisal fibers in lieu of the polyamide ones. The sisal fibers were evaluated by means of scanning electronic microscopy and through solubility assays in hydrochloric acid and sodium hydroxide. Six filters with 28 mm of internal diameter were built, varying their length (25, 60, and 100 cm) and porosity (85 and 93%). The filtration system was fed with synthetic water, in-line coagulation was applied by the addition of 22.5 mg/L of aluminum sulfate, and filtration rates from 20 to 80 m/h were evaluated. Only the filter with 100 cm of length and 85% of porosity could work within the limit established (1 NTU), operating at 20 and 40 m/h. For all the studied configurations, the pressure drop was considerably low (less than 0.5 mH2O) when compared with 3Fs built with polyamide, which shows the potential of using this kind of filter as pre-filtration units or for less restrictive uses. This study showed that 3Fs can be adapted to include different configurations and materials, reducing their cost and making them appropriate for low-income countries.

Effect of Sisal Fiber Hornification on the Fiber-Matrix Bonding Characteristics and Bending Behavior of Cement Based Composites

2014 ◽  
Vol 600 ◽  
pp. 421-432 ◽  
Author(s):  
Saulo Rocha Ferreira ◽  
Paulo Roberto Lopes Lima ◽  
Flávio Andrade Silva ◽  
Romildo Dias Toledo Filho
Keyword(s):  
Dimensional Stability ◽  
Sisal Fiber ◽  
Multiple Cracks ◽  
Direct Tension ◽  
Wetting And Drying ◽  
Pull Out ◽  
Higher Dimensional ◽  
Bending Loads ◽  
Fiber Matrix ◽  
Sisal Fibers

Cycles of wetting and drying can change the microstructure of vegetable fibers through a mechanism known as hornification, which modifies the polymeric structure of the fiber-cells resulting in a higher dimensional stability. In the present work the influence of hornification on the sisal fiber-matrix bond adhesion as well as in the sisal fiber dimensional stability and mechanical behaviour under direct tension was evaluated. Furthermore, cementitious composites reinforced with randomly dispersed hornified sisal fibers were developed and characterized under bending loads. The results show that the tensile strength and strain at failure of the hornified sisal fibers were increased by about 5% and 39%, respectively, whereas the modulus of elasticity was reduced by 9%. The fibers also presented higher dimensional stability with the hornification process. The fiber-matrix bonding was improved and the pull-out resistance of the fibers submitted to ten cycles of wetting and drying was increased by about 40% to 50%. The higher fiber-matrix bond strength contributed to an increase in the ductility and post-cracking behaviour of the composite. The fracture process was characterized by the formation of multiple cracks with the hornified sisal fibers presenting a higher ability to bridge and arrest the cracks.

Study on the Bio-Composite from Sisal Fiber Reinforced Cellulose Acetate

2012 ◽  
Vol 535-537 ◽  
pp. 2301-2306 ◽  
Author(s):  
Ai Ju Jiang ◽  
Xiao Qiang Xu ◽  
Hong Wu Wu
Keyword(s):  
Cellulose Acetate ◽  
Interfacial Adhesion ◽  
Sisal Fiber ◽  
Initial Length ◽  
Hot Press ◽  
Biodegradation Rate ◽  
Twin Screw Extrusion ◽  
Screw Extrusion ◽  
Twin Screw ◽  
Sisal Fibers

In this paper, sisal fibers (SF) reinforced cellulose acetate composites were prepared using twin-screw extrusion followed by hot-press moulding technology. Both the mechanical properties and the biodegradable rate of the composite were investigated in terms of effect of initial length and mass content percentage of sisal fiber on. The results showed that the fibers tended to be shorter and thinner during the processing of twin-screw blending and the tensile and flexure strength of composites were enhanced, with the content or initial length of sisal fibers increasing. Furthermore, the biodegradation rate of the composite was forward at first, and gradually became slow in later period and then leveled off finally. In addition, Micro-morphologies of the fracture surface of the composite were visualized by scanning electron microscopy (SEM) to analyze the effect of initial length and content of sisal fibers on interfacial adhesion and the distribution of sisal fibers in the composites.

scholarly journals A REVIEW ON SISAL FIBER REINFORCED POLYMER COMPOSITES

1999 ◽  
Vol 3 (3) ◽  
pp. 367-379 ◽  
Author(s):  
Kuruvilla Joseph ◽  
Romildo Dias Tolêdo Filho ◽  
Beena James ◽  
Sabu Thomas ◽  
Laura Hecker de Carvalho
Keyword(s):  
Polymer Composites ◽  
Building Materials ◽  
Research Work ◽  
Appropriate Technology ◽  
Natural Fibres ◽  
Sisal Fiber ◽  
Related Factors ◽  
Sisal Fibre ◽  
Reinforced Polymer ◽  
Fibre Reinforced Polymer

ABSTRACT The global demand for wood as a building material is steadily growing, while the availability of this natural resource is diminishing. This situation has led to the development of alternative materials. Of the various synthetic materials that have been explored and advocated, polymer composites claim a major participation as building materials. There has been a growing interest in utilizing natural fibres as reinforcement in polymer composite for making low cost construction materials in recent years. Natural fibres are prospective reinforcing materials and their use until now has been more traditional than technical. They have long served many useful purposes but the application of the material technology for the utilization of natural fibres as reinforcement in polymer matrix took place in comparatively recent years. Economic and other related factors in many developing countries where natural fibres are abundant, demand that scientists and engineers apply appropriate technology to utilize these natural fibres as effectively and economically as possible to produce good quality fibre reinforced polymer composites for housing and other needs. Among the various natural fibres, sisal is of particular interest in that its composites have high impact strength besides having moderate tensile and flexural properties compared to other lignocellulosic fibres. The present paper surveys the research work published in the field of sisal fibre reinforced polymer composites with special reference to the structure and properties of sisal fibre, processing techniques, and the physical and mechanical properties of the composites.

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