Processing and Properties of Biodegradable Composites to Strengthen Structures

Archana, D. P.; Reddy, H. N. Jagannatha; Prabhakara, R.; Aswath, M. U.; Chandrashekar, A.

doi:10.1007/s40032-021-00743-2

Cited by 8 publications

(7 citation statements)

References 24 publications

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“…For the fabrication of composites, hand layup technique was used. Before manufacturing, the fibre mats were alkali treated with 4% NaOH solution [28], following standard procedure. A wooden mould coated with the releasing agent of 300 × 150 × 3.5 mm size was used.…”

Section: Preparation Of Compositesmentioning

confidence: 99%

“…Barreto et al [27] noticed that treating sisal fibre with NaOH solution has improved thermal stability in comparison with its raw form. Archana et al [28] reviewed various natural fibres owing to their structural and mechanical properties and described their potential for strengthening of existing structures. Hota et al [29] presented a comprehensive analysis of materials for civil engineering structures and innovation.…”

Section: Introductionmentioning

confidence: 99%

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Mechanical Characterization of Biocomposites Reinforced with Untreated and 4% NaOH-Treated Sisal and Jute Fibres

Archana

Reddy

Paruti

2022

Advances in Materials Science and Engineering

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Composites reinforced with natural fibres have gained popularity compared to synthetic fibre-reinforced polymer composites due to their environmental sustainability, despite their reduced stiffness and load-bearing capability. In this work, the biocomposites reinforced with sisal and jute fibres which are made by hand layup technique were investigated for mechanical and water absorption characteristics. The effect of a 4 percent NaoH treatment concentration on the aforementioned properties was investigated. The specimens’ tensile and flexural broken surfaces were morphologically characterized to investigate microstructural failures. The experimental results show that, compared to untreated fibre-reinforced composites, the biocomposites reinforced with 4 percent NaoH-treated fibre exhibit higher tensile, flexural, and impact strengths, as well reduced water absorption rate. These composites are aimed to be used for strengthening existing civil structures as a retrofitting element.

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Section: Preparation Of Compositesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Mechanical Characterization of Biocomposites Reinforced with Untreated and 4% NaOH-Treated Sisal and Jute Fibres

Archana

Reddy

Paruti

2022

Advances in Materials Science and Engineering

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“…Due to hostile conditions, natural disasters, changes in applied loads, corrosion of reinforcement, and inadequate maintenance, older structures need maintenance and repairs. One of the most promising strategies for extending the life of the structures and providing the necessary reinforcement in recent years has been the use of fiber reinforced polymer (FRP) composites for strengthening and rehabilitation of reinforced concrete (RC) structures. − …”

Section: Introductionmentioning

confidence: 99%

“…One of the most promising strategies for extending the life of the structures and providing the necessary reinforcement in recent years has been the use of fiber reinforced polymer (FRP) composites for strengthening and rehabilitation of reinforced concrete (RC) structures. 1 − 3 …”

Section: Introductionmentioning

confidence: 99%

Employing Carbon Fiber Reinforced Polymer Composites toward the Flexural Strengthening of Reinforced Concrete T-Beams

et al. 2023

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Reinforced concrete structures are exposed to various loads under critical environmental conditions, which might lead to the deterioration of the structures prior to their designed service life. Hence, to improve the serviceability of the reinforced concrete (RC) structures and meet the design requirements, the structures are strengthened using carbon fiber reinforced polymer (CFRP) composites. The application of CFRP is done using two major techniques, namely externally bonded (EB) reinforcement and near surface mounted (NSM) techniques. The purpose of this study was to examine and compare the behavior of RC T-beams that had been flexurally reinforced utilizing EB and NSM techniques. Six full-size RC T-beams were evaluated, including a reference beam and four beams that had been flexurally reinforced using laminates made of EB and NSM CFRP. The findings of the experimental tests reveal that, when using the same quantity of CFRP, the beams strengthened with NSM laminates outperformed those strengthened with EB laminates in terms of ultimate load.

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“…They are used in a selection of applications, including automotive (shafts and hulls), marine, aeronautical (rocket components), and aircraft and safety equipment (ballistic protection and airbags). The matrix and reinforcement efficiency are what determines how well these materials perform [11,12]. The most commonly used matrices in composites are thermoset resins, such as polyester, which can replace very costly steels and alloys [13,14].…”

Section: Introductionmentioning

confidence: 99%

Influence of Nanoclay Filler Material on the Tensile, Flexural, Impact, and Morphological Characteristics of Jute/E‐Glass Fiber‐Reinforced Polyester‐Based Hybrid Composites: Experimental, Modeling, and Optimization Study

Praveena¹,

Santhosh

Archana

et al. 2022

Journal of Nanomaterials

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The use of natural fibers as reinforcement in polymer composite materials is increasing owing to the ecocompatibility. The fabrication of natural fiber-based composite is now an emerging field of study, and it is the most desired choice not only because of its superior qualities such as light weight, stiffness, and low density but also because of being economical and renewable. However, the mechanical characteristics of these composites are a major concern and thus require some additives in the form of nanoclay, which can readily act as a filler material, thereby enhancing the tensile, flexural, and impact strengths of the natural fiber composites. In this regard, a hybrid polymer composite with jute and E-glass fiber as reinforcements, along with Cloisite 20 nanoclay filler material, is fabricated by a hand layup process in a steel mold box and cut to the ASTM standards. The composition of the reinforcements is fixed based on the initial experimental studies and review of the literature findings. The wt.% of jute is fixed in the range of 10 wt.% to 20 wt.% with 5 wt.% interval for each composition, while the wt.% of E-glass fiber varied from 10 wt.% to 30 wt.% with 10 wt.% interval and that of the Cloisite 20 nanoclay filler varied from 2 wt.% to 6 wt.%. The fabricated composite specimens with varying wt.% of reinforcements and nanofiller material are subjected to standard tests for evaluating their mechanical characteristics viz., the tensile, flexural, and impact strength and the morphological characteristics. The results of the experiments have revealed that combining natural and synthetic fibers in a composite increases the impact, tensile, and flexural strength of the material. That is, the composite specimens fabricated with 20 wt.% of jute fiber and 20 wt.% of E-glass fiber and 2 wt.% of Cloisite 20 nanoclay have the maximum tensile strength of 69.7 MPa, tensile modulus of 3816.43 MPa, and impact strength of 178.62 J/m2 and flexural modulus of 275.15 MPa among all the specimens, while the composite specimen fabricated with 20 wt.% of jute fiber and 30 wt.% of E-glass fiber and 4 wt.% of the filler material possesses the maximum flexural strength of 90.22 MPa. This is also ascertained from Taguchi’s optimization studies and statistical model (regression equations) developed.

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Processing and Properties of Biodegradable Composites to Strengthen Structures

Cited by 8 publications

References 24 publications

Mechanical Characterization of Biocomposites Reinforced with Untreated and 4% NaOH-Treated Sisal and Jute Fibres

Mechanical Characterization of Biocomposites Reinforced with Untreated and 4% NaOH-Treated Sisal and Jute Fibres

Employing Carbon Fiber Reinforced Polymer Composites toward the Flexural Strengthening of Reinforced Concrete T-Beams

Influence of Nanoclay Filler Material on the Tensile, Flexural, Impact, and Morphological Characteristics of Jute/E‐Glass Fiber‐Reinforced Polyester‐Based Hybrid Composites: Experimental, Modeling, and Optimization Study

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