Effects of Nylon Fibre and Concrete Strength on the Shrinkage and Fracture Behaviour of Fibre Reinforced Concrete

Ozsar, Dogac S.; Özalp, Fatih; Yilmaz, Halit; Akcay, Burcu

doi:10.1007/978-94-024-1194-2_22

Cited by 8 publications

(5 citation statements)

References 8 publications

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“…In the research conducted by Ozsar et al (2017), the effects of shrinkage and fracture properties on NFRC were investigated by using Nylon 6.6 polyamide fibers. The research was concentrated on the results of varying the fibers' quantity and diameter.…”

Section: Review Of Literature Over Experimental Analysismentioning

confidence: 99%

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Review on Conventional Concrete and Nylon Fiber Reinforced Concrete Behavior

Mohiuddin

Abhi

Ulfat

et al. 2023

MJCE

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The addition of fibers to reinforced cement concrete enhances the suitability of structures under impacts and earthquake loads by boosting firmness or energy-consuming proficiency of the hardened concrete material. During cracking of concrete, one of the most relevant behaviors of fiber like “bridge effect” starts functioning. As a result of this, fiber blocks crack formation and propagation, and hence strength and ductility of concrete structure improve. The goal of this study is to compare the mechanical properties of reinforced cement concrete by mixing nylon fibers and without mixing nylon fibers. In this study, data from existing article are assessed to compare the strengths of nylon fiber reinforced concrete and conventional concrete by using concrete strength measuring test results such as compressive strength test, flexural strength test, and split tensile strength test. Adding fiber with concrete mix reduces the moisture content, thereby lessening the workability of concrete which produces ﬁber ball. Due to the obvious lack of homogeneity caused by fiber balling, the efficiency of fiber reinforced concrete is reduced. During the mixing of small portions of fibers with dry concrete the difficulty of fiber separation can prevent by providing good distribution and scattering within the mixtures which enhance concrete strength and thus the balling incident can escape. The dynamic transmission of stress between concrete mix and the fiber achieves by considering significant factors like aspect ratio, volume, and orientation of the fiber. Nylon fiber provides mechanical improvement of reinforced concrete by enhancing impact resistance and increasing flexural toughness, as a result the load-bearing capacity of concrete develops effectively. Introducing nylon fibers with concrete mixture promotes strong tensile comportment of concrete outstandingly after the post peak stage.

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Section: Review Of Literature Over Experimental Analysismentioning

confidence: 99%

“…Figure 9Load-deflection graphs for the constructed with four-point bending up to 0.5 mm of deflection(Ozsar et al 2017) …”

mentioning

confidence: 99%

Review on Conventional Concrete and Nylon Fiber Reinforced Concrete Behavior

Mohiuddin

Abhi

Ulfat

et al. 2023

MJCE

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“…On the other hand, Zia and Ali [ 134 ] found that a 5.0% addition of nylon fibers (by weight of cement) decreases the compressive and splitting tensile strengths of FRC by more than 30% and 10%, respectively. Ozsar et al [ 135 ] reported that nylon microfibers are more effective in increasing the splitting tensile strength of the mixtures with low water-to-cement ratios. This trend was noted to be reversed for nylon macrofibers.…”

Section: Pre-peak Mechanical Propertiesmentioning

confidence: 99%

“…Furthermore, it can be understood from the cited study that PP FRC has superior post-peak properties compared to nylon and jute FRC. In a separate effort, Ozsar et al [ 135 ] investigated the use of both macro and micro monofilament nylon fibers in the concrete matrices with two different strengths. Comparing micro and macro nylon fibers, the study found that micro nylon fibers increased the compressive strength of the composite and were most effective in reducing plastic shrinkage cracks, while the macro nylon fibers increased the fracture energy and improved the post-crack performance of the tested mixtures.…”

Section: Post-peak Mechanical Propertiesmentioning

confidence: 99%

State-of-the-Art Review of Capabilities and Limitations of Polymer and Glass Fibers Used for Fiber-Reinforced Concrete

et al. 2021

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The concrete industry has long been adding discrete fibers to cementitious materials to compensate for their (relatively) low tensile strengths and control possible cracks. Extensive past studies have identified effective strategies to mix and utilize the discrete fibers, but as the fiber material properties advance, so do the properties of the cementitious composites made with them. Thus, it is critical to have a state-of-the-art understanding of not only the effects of individual fiber types on various properties of concrete, but also how those properties are influenced by changing the fiber type. For this purpose, the current study provides a detailed review of the relevant literature pertaining to different fiber types considered for fiber-reinforced concrete (FRC) applications with a focus on their capabilities, limitations, common uses, and most recent advances. To achieve this goal, the main fiber properties that are influential on the characteristics of cementitious composites in the fresh and hardened states are first investigated. The study is then extended to the stability of the identified fibers in alkaline environments and how they bond with cementitious matrices. The effects of fiber type on the workability, pre- and post-peak mechanical properties, shrinkage, and extreme temperature resistance of the FRC are explored as well. In offering holistic comparisons, the outcome of this study provides a comprehensive guide to properly choose and utilize the benefits of fibers in concrete, facilitating an informed design of various FRC products.

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“…The short discrete fibers are randomly arranged throughout the total mass of concrete in the composite material [14]. Using discontinuous concrete fibers to increase concrete's tensile strain capacity is one approach to prevent crack formation in concrete [15].…”

Section: Introductionmentioning

confidence: 99%

Influence of Aspect Ratio of Nylon Fibers on the Mechanical Properties of Concrete

Khan,

Ferretti,

Ashraf

2023

Preprint

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The initiation of micro-cracks in concrete is primarily due to its brittleness, which causes severe impacts on the overall behaviour of the concrete. However, incorporating fibers in concrete can increase its strength and performance. The nylon fibers used in this study were of two types: Ny-lon Fiber Threads (NFT) and Nylon Fiber Strands (NFS). This research aims to examine the effect of nylon fiber on the mechanical properties of plain cement concrete (PCC). The potential strength of nylon-fiber reinforced concrete (NFRC) was determined versus that of PCC, at fiber content of 2.5 kg/m3. The compressive strength of concrete 30 MPa with a water-cement ratio of 0.4 was produced to investigate the workability and density tests of conventional and fiber-reinforced concrete (FRC). The concrete beams and cylinder samples were tested for compressive, splitting, and flexural strength using ASTM standards (ASTM C-39, C-496, and D-790). It was found that NFT-reinforced samples achieved higher hardened properties of concrete (13.05%) compared to that NFS-reinforced samples. Test results showed that the incorporation of fiber in the concrete decreased the compressive strength of the concrete of cylinder and cube by 0–10% and 5–15%, respectively, however, it increased the splitting tensile and flexural strengths by 0-15%, and 5-15% respectively. Furthermore, the incorporation of nylon fibers (NF) in PCC significantly enhanced the ductility and delayed the cracks initiation in concrete.

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Effects of Nylon Fibre and Concrete Strength on the Shrinkage and Fracture Behaviour of Fibre Reinforced Concrete

Cited by 8 publications

References 8 publications

Review on Conventional Concrete and Nylon Fiber Reinforced Concrete Behavior

Review on Conventional Concrete and Nylon Fiber Reinforced Concrete Behavior

State-of-the-Art Review of Capabilities and Limitations of Polymer and Glass Fibers Used for Fiber-Reinforced Concrete

Influence of Aspect Ratio of Nylon Fibers on the Mechanical Properties of Concrete

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