Research status and prospect of waste steel fiber reinforced concrete

Binglin, Yu

doi:10.1051/e3sconf/202124803039

Cited by 5 publications

(2 citation statements)

References 11 publications

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“…Their experimental results showed that while industrial recycled steel fibers had a minimal impact on compressive strength, they significantly influenced flexural strength. Compared to conventional concrete, recycled steel fiber concrete exhibited a gradual decline in bending toughness along the load-deflection curve, with a secondary peak emerging [15].…”

Section: Introductionmentioning

confidence: 93%

Investigating The Potential of Recycled Steel Fibers in Concrete

Hasan,

Ra,

Biswas

et al. 2024

Preprint

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Concrete is a fundamental material in civil engineering, ubiquitous in construction projects due to its low cost and versatility. However, its inherent brittleness makes it susceptible to abrupt failure under tension, despite its high compressive strength. To address this limitation, various reinforcement techniques have been developed, including Fiber-Reinforced Concrete (FRC). FRC integrates randomly dispersed fibers into the concrete matrix to control hairline cracks and enhance mechanical properties. Steel Fiber-Reinforced Concrete (SFRC) is a notable method wherein short steel fibers are added to the mix. These fibers, with lengths ranging from 15 mm to 70 mm and aspect ratios (AR) from 20 to 100, improve impact resistance, flexural strength, and other desirable properties. This study investigates the use of recycled steel fibers in concrete, aiming to develop an eco-friendly and high-performance construction material. Recycled fibers, sourced from scrap yards, smelters, and other facilities, were analyzed for their mechanical behavior in comparison to conventional concrete. Laboratory tests revealed that an optimal dosage of 1–1.5% of recycled steel fibers with an aspect ratio around 75 improves concrete strength. After casting and testing concrete cylinders and beams, it was observed that strength initially increased up to 1.5% fiber dosage but then plateaued or decreased. This reduction in strength beyond 1.5% may be attributed to decreased concrete cohesiveness and disturbance introduced by the recycled steel fibers. Thus, careful consideration of fiber dosage is crucial for optimizing concrete performance.

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Section: Introductionmentioning

confidence: 93%

Investigating The Potential of Recycled Steel Fibers in Concrete

Hasan,

Ra,

Biswas

et al. 2024

Preprint

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“…Material recovery, which uses secondary materials from ELTs in construction, automotive, and civil engineering applications, was used to treat around 2 million tons (61.75 percent of total ELTs handled). Apart from this, in 2009, China’s tire production by rubber consumption accounted for around 70% of the country’s total rubber resource consumption, resulting in 233 million waste tires weighing approximately 8.6 million tons, equivalent to approximately 3 million tons of rubber resources [ 7 ]. According to Pilakoutas et al [ 8 ], over a billion discarded tires are produced worldwide.…”

Section: Introductionmentioning

confidence: 99%

A Comprehensive Review of Incorporating Steel Fibers of Waste Tires in Cement Composites and Its Applications

et al. 2022

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Accumulating vast amounts of pollutants drives modern civilization toward sustainable development. Construction waste is one of the prominent issues impeding progress toward net-zero. Pollutants must be utilized in constructing civil engineering structures for a green ecosystem. On the other hand, large-scale production of industrial steel fibers (ISFs) causes significant damage to the goal of a sustainable environment. Recycled steel fibers (RSFs) from waste tires have been suggested to replace ISFs. This research critically examines RSF’s application in the mechanical properties’ improvement of concrete and mortar. A statistical analysis of dimensional parameters of RSFs, their properties, and their use in manufacturing various cement-based composites are given. Furthermore, comparative assessments are carried out among the improvements in compressive, split tensile, and flexural strengths of plain and RSF-incorporated concrete and mortar. In addition, the optimum contents of RSF for each strength property are also discussed. The influence of RSFs parameters on various strength properties of concrete and mortars is discussed. The possible applications of RSF for various civil engineering structures are reviewed. The limitations and errors noticed in previous review papers are also outlined. It is found that the maximum enhancement in compressive strength (CS), split tensile strength (STS), and flexure strength (FS) are 78%, 149%, and 157%, respectively, with the addition of RSF into concrete. RSF increased cement mortars’ CS, STS, and FS by 46%, 50.6%, and 69%, respectively. The current study encourages the building sector to use RSFs for sustainable concrete.

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