Mechanical Properties of Natural as well as Synthetic Fiber Reinforced Concrete: A Review

Ahmad, Jawad; Zhou, Zhiguang

doi:10.1016/j.conbuildmat.2022.127353

Cited by 101 publications

(36 citation statements)

References 157 publications

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“…The alkaline treatment exposes short-length crystals and depolymerizes the cellulose component by removing the oils, waxes, inorganic salts, and lignin that coat the fibre’s outer surface. Excessive fibre concertation treatment can potentially reduce composite strength by causing fibre surface rupture and harming the primary and secondary walls of the fibre [ 36 , 42 ]. Moreover, the load bearing capacity of an RC beam is increased by more than 50% when the RC beam is strengthened using NFRP laminates rather than synthetic FRP laminates.…”

Section: Natural Fibresmentioning

confidence: 99%

Experimental Investigation on the Strengthening of Reinforced Concrete Beams Using Externally Bonded and Near-Surface Mounted Natural Fibre Reinforced Polymer Composites—A Review

Effiong

Ede

2022

Materials

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Developing more resilient and sustainable physical infrastructure increases the demand for sustainable materials and strengthening approaches. Many investigations into strengthening RC beam structures have used either externally bonded (EB) or near-surface mounted (NSM) systems with synthetic fibre reinforced polymer composites. These synthetic fibres are unsustainable since they involve the use of nonrenewable resources and a large amount of energy. Research shows that natural fibre reinforced polymer (NFRP) composites may be an alternative to synthetic FRP composites in the strengthening of concrete beams. However, there is limited literature that validates their performance in various structural applications. Hence, the purpose of this paper is to explore the advances, prospects, and gaps of using EB/NSM NFRP techniques in strengthening concrete beams to provide areas for future research directions. The NSM FRP technique provides improved strengthening effects and mitigates the concerns associated with the EB system, based on a wider range of applications using synthetic FRPs. However, the NSM NFRP strengthening technique has been underutilized, though the EB NFRP system has been more commonly explored in reviewed studies. The knowledge gaps and areas for proposed future research directions are essential in developing work in emerging NFRPs and strengthening techniques for sustainable infrastructure.

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Section: Natural Fibresmentioning

confidence: 99%

Experimental Investigation on the Strengthening of Reinforced Concrete Beams Using Externally Bonded and Near-Surface Mounted Natural Fibre Reinforced Polymer Composites—A Review

Effiong

Ede

2022

Materials

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“…Most of the research focuses on their application for fabric polymer reinforcement, asphalt modification, concrete reinforcement, etc. [ 9 , 10 ].…”

Section: Introductionmentioning

confidence: 99%

The Reinforcing Effect of Waste Polyester Fiber on Recycled Polyethylene

Jiang

Fang

et al. 2022

Polymers

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To improve the performance and application value of recycled plastics, filling modification has been widely used in waste plastic reinforcement. In this study, recycled polyethylene (RPE) was reinforced via extrusion blending using waste polyester fiber (WPF) from a waste silk wadding quilt as a reinforcer. The effects of the amount of WPF on the mechanical properties, the thermal stability of RPE and the microstructure of the RPE/WPF composite were studied. The result shows that extrusion blending can evenly disperse WPF in RPE matrix and that WPF can clearly improve the tensile strength, flexural modulus, storage modulus and thermal stability of RPE. The tensile strength and flexural modulus almost achieved the maximum when the addition of WPF was 20 wt%. The storage modulus under this condition is also higher than that of other samples. This study provides a cheap and effective reinforcement method for waste plastics as well as a new idea for the reuse of WPF, which is of great significance to the reuse of waste and environmental protection. However, how to enhance the interface adhesion between WPF and RPE to further improve the enhancement effect needs further research.

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“…FRC comprises hydraulic cement, aggregates, and discrete reinforcing fbers [1]. FRC has received worldwide attention due to its advantageous material properties, including high initial crack strength, tensile and compressive strength, toughness, outstanding impact resistance, and excellent energy absorption capacity [2][3][4][5]. Afroughsabet et al provided a comprehensive review of the mechanism of crack formation and propagation and the mechanical properties of highperformance FRC [2].…”

Section: Introductionmentioning

confidence: 99%

“…Ahmad and Zhou discussed the mechanical performances of concrete reinforced with natural or synthetic fbers. Te recommended fber content addition by weight was up to 1.0% of the maximum mechanical properties of FRC, while further addition of fbers decreased the mechanical performances due to the lack of workability [5]. FRC's mechanical properties [6][7][8][9][10], such as tensile strength, compressive strength, fexural strength, fracture toughness [6,[11][12][13], impact resistance [12,13], and microstructural characteristics [14,15], were investigated.…”

Section: Introductionmentioning

confidence: 99%

Effect of Fiber Content on Mechanical Properties and Microstructural Characteristics of Alkali Resistant Glass Fiber Reinforced Concrete

Zhao

et al. 2022

Advances in Materials Science and Engineering

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Owing to its enhanced strength, ductility, and resistance to harsh environments, increasing research attention has been paid to alkali-resistant glass fiber reinforced concrete (ARGFRC). This paper presents experimental studies concerning the effects of fiber content on the mechanical properties and microstructural characteristics of ARGFRC. The amount of glass fiber was considered at levels of 0.0, 0.3, 0.5, 0.8, 1.0, 1.3, and 1.5% of the concrete volume. The compression, flexural, impact resistance, scanning electron microscopy, and energy dispersive spectroscopy tests were conducted. The flexural load-deflection curve, flexural strength, flexural toughness index, flexural fracture energy, postcracking stiffness, postpeak stiffness, and impact resistance energy absorption were obtained. Then the changing law affected by fiber content on these mechanical properties was further analyzed, and the corresponding equation was fitted. When fiber content was 1.5%, the flexural toughness index I5, I10, and I20 values were 4.0, 5.9, and 8.9, respectively, and increased by 3.0∼7.9 times. Glass fiber incorporation could increase the ductility and delay the brittle failure when the fiber content reached 0.8%. The largest postcracking stiffness was calculated at 36.174 kN/mm with a fiber content of 0.8%. The higher the fiber content, the larger the postpeak stiffness of the tested beams. Impact resistance test results demonstrated that the optimum fiber content was 1.3%. As the fiber content increased, the effect of the concrete grout on the fiber packaging decreased, according to the scanning electron microscopy analysis. The energy dispersive spectroscopy observation proved that adding a certain fiber content did not affect the concrete hydration reaction.

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Mechanical Properties of Natural as well as Synthetic Fiber Reinforced Concrete: A Review

Cited by 101 publications

References 157 publications

Experimental Investigation on the Strengthening of Reinforced Concrete Beams Using Externally Bonded and Near-Surface Mounted Natural Fibre Reinforced Polymer Composites—A Review

Experimental Investigation on the Strengthening of Reinforced Concrete Beams Using Externally Bonded and Near-Surface Mounted Natural Fibre Reinforced Polymer Composites—A Review

The Reinforcing Effect of Waste Polyester Fiber on Recycled Polyethylene

Effect of Fiber Content on Mechanical Properties and Microstructural Characteristics of Alkali Resistant Glass Fiber Reinforced Concrete

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