Performance evaluation of fiber-reinforced concrete produced with steel fibers extracted from waste tire

Zeybek, Özer; Özkılıç, Yasin Onuralp; Çelik, Ali İhsan; Deifalla, Ahmed Farouk; Ahmad, Mahmood; Sabri, Mohanad Muayad Sabri

doi:10.3389/fmats.2022.1057128

Cited by 49 publications

(28 citation statements)

References 72 publications

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“…Similar results were also reported on a study by Elik et al 45 investigating the performance assessment of fiber‐reinforced concrete produced with waste lathe fibers. Zeybek et al 46 carried out experimental investigations to evaluate the performance of concrete reinforced with steel fibers extracted from waste tires with volume fractions 1%, 2%, and 3% (with compression, splitting tensile, and flexure tests carried out). It was found that the mechanical properties were improved with the addition of fibers; however, workability was significantly reduced with the addition of more than 2% volume fraction of fibers.…”

Section: Literature Reviewmentioning

confidence: 99%

Constitutive model for plain and fiber‐reinforced lightweight concrete under compression

Al‐Naimi,

Abbas

2023

Structural Concrete

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In this research work, experimental investigations of the compressive behavior of plain and fiber‐reinforced lightweight‐aggregate concrete have been carried out (this formed part of a wider study, which also examined tensile and flexural behaviors). Compression mechanical properties were established in the studies and a generic constitutive compressive σ–ε model for both plain and fibrous lightweight concrete was derived and validated against experimental results from the present studies and previous research in the literature involving different types of lightweight aggregates, concrete strengths, and steel fibers. The reliability of predictions of the constitutive model was also checked against existing fibrous concrete models. A fiber‐reinforcing factor was also introduced taking into account the fiber volume fraction, fiber length and diameter, the number of fiber bends, and concrete compressive strength. As such, this was considered a better descriptor of the material than simply using the fiber volume fraction. The lightweight aggregates examined in the experimental study were recycled from fly ash waste and the fibers were hooked‐ended with single, double, and triple bends (corresponding to DRAMIX steel fibers 3D, 4D, and 5D types, respectively). The fibers were added at volume fractions Vf of 1% and 2% and the experimental studies were carried out using standard cube and cylinder uniaxial compression test specimens. It was concluded that the higher the number of bends and fiber content, the more pronounced the enhancement provided by the fibers to the compressive strength and ductility responses. All steel fibers used in the present studies were found to significantly improve the compressive toughness, while only 4D and 5D fibers (i.e., those with double and triple end bends) enhanced the compressive strength by up to 12% and 15%, respectively. It was also found that the elastic properties of plain lightweight concrete remained unaffected by the addition of fibers.

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Section: Literature Reviewmentioning

confidence: 99%

Constitutive model for plain and fiber‐reinforced lightweight concrete under compression

Al‐Naimi,

Abbas

2023

Structural Concrete

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“…Concrete is the most widely used building material in the world due to its many advantages over other materials [1]. Concrete consists of various ingredients, including cement, aggregates (fine and coarse), water, and some additives, and it is widely used as a building material in civil engineering applications such as dams, bridges, and roads [2]. Compressive strength is the most fundamental of the different indices of concrete qualities since it is directly related to structural safety and is essential in the performance measurement of structures throughout their entire life cycle.…”

Section: Introductionmentioning

confidence: 99%

Machine Learning Modelling for Compressive Strength Prediction of Superplasticizer-Based Concrete

et al. 2023

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Superplasticizers (SPs), also known as naturally high-water reducers, are substances used to create high-strength concrete. Due to the system’s complexity, predicting concrete’s compressive strength can be difficult. In this study, a prediction model for the compressive strength with SP was developed to handle the high-dimensional complex non-linear relationship between the mixing design of SP and the compressive strength of concrete. After performing a statistical analysis of the dataset, a correlation analysis was performed and then 16 supervised machine learning regression techniques were used. Finally, by using the Extra Trees method and creating the SP variable values, it was shown that the compressive strength values of concrete increased with the addition of SP in the optimal dose. The results indicate that superplasticizers can often reduce the water content of concrete by 25 to 35 per cent and consequently resistivity increased by 50 to 75 per cent and the optimum amount of superplasticizers was up to 12 kg per cubic meter as well. From one point, the increase in superplasticizers does not lead to a rise in the concrete compressive strength, and it remains constant. According to the findings, SP additive has the most impact on concrete’s compressive strength after cement. Given the scant information now available on concrete-including superplasticizer, it is prudent to design a concrete mixing plan for future studies. It is also conceivable to investigate how concrete’s compressive strength is impacted by water reduction.

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“…To date, numerous researchers are studying the use of recycled fibers obtained from tires for concrete reinforcement [ 19 , 20 , 21 ] and presented numerous interesting conclusions. With the state of the economy of used tires at present, there remains a problem related to the rational management of waste, which is steel fiber.…”

Section: Introductionmentioning

confidence: 99%

Comparative Analysis of Waste, Steel, and Polypropylene Microfibers as an Additive for Cement Mortar

et al. 2023

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This study presents the results of laboratory experiments conducted to determine the mechanical parameters for cement mortar with various quantities of waste fibers, polypropylene microfibers, and steel microfibers. Waste fibers were used as samples and obtained using an end-of-life car tire recycling process. For comparison, samples with the addition of steel and polypropylene microfibers were tested. The same degrees of fiber reinforcement were used for all types of fibers. Ultimately, 22 mixtures of cement mortar were prepared. The aim of this study is therefore to present and compare basic mechanical parameter values. Compressive strength, flexural strength, fracture toughness, and flexural toughness were of particular interest. A three-point bending test was performed on three types of samples, without a notch and with a notch of 4 and 8 mm. The results show that the use of steel microfibers in the cement mortar produces a product with better properties compared to a mixture with steel cord or polypropylene fibers. However, the cement mortar with the steel cord provides better flexural strength and greater flexural toughness factors compared to the cement mortar with polypropylene fibers. This means that the steel cord is a full-value ecological replacement for different fibers.

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Performance evaluation of fiber-reinforced concrete produced with steel fibers extracted from waste tire

Cited by 49 publications

References 72 publications

Constitutive model for plain and fiber‐reinforced lightweight concrete under compression

Constitutive model for plain and fiber‐reinforced lightweight concrete under compression

Machine Learning Modelling for Compressive Strength Prediction of Superplasticizer-Based Concrete

Comparative Analysis of Waste, Steel, and Polypropylene Microfibers as an Additive for Cement Mortar

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