Dynamic compressive behaviour of recycled tyre steel fibre reinforced concrete

Chen, Meng; Si, Hanqing; Fan, Xiaoyue; Xuan, Yiwei; Zhang, Mingzhong

doi:10.1016/j.conbuildmat.2021.125896

Cited by 64 publications

(27 citation statements)

References 65 publications

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“…This guaranteed that the stress was evenly distributed and that the crack course was altered, which led to fiber-bridging action that prevented the crack from progressing further [ 33 ]. The SF performs better than the PF because of its higher tensile strength, fiber-bridging action, and capacity to stop cracks from spreading [ 34 ]. In addition, the fibers perpendicular to the loading direction can increase the compressive strength because the fibers tend to confine the lateral expansion of the specimen, which reduces the crack propagation.…”

Section: Resultsmentioning

confidence: 99%

Experimental and Analytical Modeling of Flexural Impact Strength of Preplaced Aggregate Fibrous Concrete Beams

2022

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Preplaced aggregate fibrous concrete (PAFC) is a revolutionary kind of concrete composite that is gaining popularity and attracting the interest of academics from across the world. PAFC is a uniquely designed concrete prepared by stacking and packing premixed fibers and coarse aggregate in a steel mold. The gaps between the fibers and aggregates are subsequently filled by injecting a cement grout with high flowability. This study investigates the impact performance of three different sizes of PAFC beams. Steel and polypropylene fibers were used in a 3% dosage to make three different beam sizes, measuring 550 × 150 × 150 mm, 400 × 100 × 100 mm, and 250 × 50 × 50 mm. According to ACI Committee 544, all beams were subjected to a drop weight flexural impact test. Compressive strength, impact energies at initial crack and failure, ductility index, and failure mode were evaluated. Additionally, analytical modeling was used to compute the failure impact energy for the fibrous beams. The results showed that the addition of fibers increased the capacity of the tested beams to absorb greater flexural impact energy. Compared to polypropylene fibers, steel fibers had better crack propagation and opening resistance because of their higher tensile strength and crimped and hooked end configuration. For all large-size beams, the analysis of the percentage increase in impact energy at the failure stages was found to be 5.3 to 14.6 times higher than the impact energy at cracking.

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Section: Resultsmentioning

confidence: 99%

Experimental and Analytical Modeling of Flexural Impact Strength of Preplaced Aggregate Fibrous Concrete Beams

2022

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“…Specimen 30, incorporating the longest fibers (62 mm), showed the highest decline in CS, while the other two showed a 1% decrease in CS for 60 mm fibers. The highest increase of 13% in CS at 1% RSF was reported for specimen 46, incorporating RSF had a length of 37 mm and diameter of 0.42 mm, and for specimen 48 [ 25 ] containing RSF with a length and diameter of 7.30 mm and 0.22 mm, respectively [ 55 ]. Hence, it can be suggested that the optimized content of the RSF can vary in RSF having different diameters for the same fiber length and vice versa.…”

Section: The Properties Of Rsf-incorporated Concretementioning

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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“…The disposal of tyres is a global environmental problem. About 1.5 billion tyres are produced annually worldwide [ 1 , 2 ]. More than 500 million used tyres are stored in landfills [ 3 ] and pose serious threats to humans and the environment [ 4 ].…”

Section: Introductionmentioning

confidence: 99%

“…The recycled material that has proved to have the most widespread application is rubber waste [ 9 ], constituting the so-called rubber aggregate of various fractions, which is used as a material for the base of roads, asphalt surfaces, embankments, playgrounds, noise barriers, and as an aggregate for concretes and mortars [ 3 , 10 , 11 , 12 , 13 , 14 ]. Additionally, some scientific papers focus on the use of recycled tyre steel cords as structural reinforcement for concrete, either as a standalone reinforcement or as a mix of different types of fibres [ 1 , 2 , 15 , 16 , 17 , 18 , 19 ].…”

Section: Introductionmentioning

confidence: 99%

“…Over the past few years, one could spot the increasing interest of researchers in the use of recycled steel fibres from tyres as structural reinforcement for concrete and as a possible replacement for manufactured steel fibres. A literature analysis indicates that recycled tyre fibres were more effective in improving the flexural strength of concrete and improving its fracture properties compared to unreinforced concrete and concrete with steel fibre additions, provided that they were found in the appropriate quantity and purity in concrete [ 1 , 2 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 ].…”

Section: Introductionmentioning

confidence: 99%

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Effectiveness of Concrete Reinforcement with Recycled Tyre Steel Fibres

et al. 2022

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The role of searching for industrial waste management solutions in construction is key for environmental protection. Research in recent years has focused on solutions aimed at reducing the carbon footprint. This paper presents the results of tests conducted on concrete reinforced with treated recycled tyre steel fibres (RTSFs) compared to the same amount of manufactured steel fibres (MSFs). The effectiveness of concrete reinforcement with RTSFs was analysed using the fracture mechanics parameters of cementitious composites. Rheological tests, residual flexural tensile strength tests, work of fracture measurements, toughness indices, examinations of the fibre distribution in the concrete, and SEM observations of the concrete fractures with fibres were performed. Determining the work of fracture and toughness indices was an innovative aspect of this paper. As the amount of RTSFs increased, a decrease in the consistency was observed, although the distribution of fibres in the concrete was uniform, as proven by the results of computer tomography tests. Concrete reinforced with RTSFs that is purified and refined during the recycling process might have better properties than concrete reinforced with the same amount of MSFs. The application of RTSFs in construction has environmental and economic benefits in addition to the strengthening of cementitious composites.

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Dynamic compressive behaviour of recycled tyre steel fibre reinforced concrete

Cited by 64 publications

References 65 publications

Experimental and Analytical Modeling of Flexural Impact Strength of Preplaced Aggregate Fibrous Concrete Beams

Experimental and Analytical Modeling of Flexural Impact Strength of Preplaced Aggregate Fibrous Concrete Beams

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

Effectiveness of Concrete Reinforcement with Recycled Tyre Steel Fibres

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