Environment-friendly recycled steel fibre reinforced concrete

Qin, Xia; Kaewunruen, Sakdirat

doi:10.1016/j.conbuildmat.2022.126967

Cited by 43 publications

(15 citation statements)

References 105 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…After observing the good performance of industrial steel fibers on concrete, it was concentrated on steel fibers obtained from wastes. Furthermore, research on obtaining fiber from waste materials other than natural resources or raw materials has increased since production of the industrial steel fibers has disadvantages such as greenhouse gas emissions and high cost (Groli et al, 2014;Sengul, 2016;Mastali et al, 2018;Zheng et al, 2018;Isa et al, 2020;Liew and Akbar, 2020;Gul et al, 2021;Qin and Kaewunruen, 2022).…”

Section: Introductionmentioning

confidence: 99%

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

Zeybek

Özkılıç²,

Çelik³

et al. 2022

Front. Mater.

View full text Add to dashboard Cite

With the increasing number of vehicles in the world, the amount of waste tires is increasing day by day. In this case, the disposal of expired tires will cause serious environmental problems. In recent years, instead of disposing of tire wastes, most of them have been started to be recycled to produce fiber-reinforced concrete. Thus, steel fibers recovered from waste tires have been preferred as an alternative to industrial steel fibers due to their environmentally friendly and low-cost advantages. In this study, an experimental study was carried out to explore the effect of fiber content on the fresh and hardened state of the concrete. To achieve this goal, compression, splitting tensile, and flexure tests were carried out to observe the performance of the concrete with tire-recycled steel fibers with the ratios of 1%, 2% and 3%. There is an improvement in the mechanical properties of the concrete with the increase of the volume fraction of the steel fiber. However, a significant reduction in workability was observed after the addition of 2% steel fibers. Therefore, it is recommended to utilize 2% tire-recycled steel fibers in practical applications. Furthermore, experimental results of concrete with tire-recycled steel fibers were collected from the literature and empirical equations based on these results were developed in order to predict the compressive and splitting tensile strengths.

show abstract

Section: Introductionmentioning

confidence: 99%

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

Zeybek

Özkılıç²,

Çelik³

et al. 2022

Front. Mater.

View full text Add to dashboard Cite

show abstract

“…Due to the extensive geometrical variation in recycled steel fibers, statistical analysis is required for frequency distribution and average fiber size for given numbers of representative fibers [ 2 , 41 , 42 , 43 , 44 ]. Raw steel fibers from waste tires can be straight or slightly twisted.…”

Section: The Properties Of Rsf Fibers Usedmentioning

confidence: 99%

“…Great attention on the global increase in tires is required, especially in the European Union [ 1 , 2 ]. More than one billion tires are used for replacement every year globally, with more than half being abandoned and waiting to be disposed of [ 3 ].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

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

et al. 2022

View full text Add to dashboard Cite

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.

show abstract

“…One possibility is using new types of materials, such as infilled cementitious composites, which can significantly reduce the carbon footprint [ 5 , 6 ]. Another possibility is the use of recycled steel fibers [ 7 ]. Likewise, the optimization of concrete structures reduces carbon emissions and construction costs [ 8 ].…”

Section: Introductionmentioning

confidence: 99%

CO2-Optimization of Post-Tensioned Concrete Slab-Bridge Decks Using Surrogate Modeling

Alcalà

Piqueras

2022

Materials

View full text Add to dashboard Cite

This paper deals with optimizing embedded carbon dioxide (CO2) emissions using surrogate modeling, whether it is the deck of a post-tensioned cast-in-place concrete slab bridge or any other design structure. The main contribution of this proposal is that it allows optimizing structures methodically and sequentially. The approach presents two sequential phases of optimization, the first one of diversification and the second one of intensification of the search for optimums. Finally, with the amount of CO2 emissions and the differentiating characteristics of each design, a heuristic optimization based on a Kriging metamodel is performed. An optimized solution with lower emissions than the analyzed sample is obtained. If CO2 emissions were to be reduced, design recommendations would be to use slendernesses as high as possible, in the range of 1/30, which implies a more significant amount of passive reinforcement. This increase in passive reinforcement is compensated by reducing the measurement of concrete and active reinforcement. Another important conclusion is that reducing emissions is related to cost savings. Furthermore, it has been corroborated that for a cost increase of less than 1%, decreases in emissions emitted into the atmosphere of more than 2% can be achieved.

show abstract

Environment-friendly recycled steel fibre reinforced concrete

Cited by 43 publications

References 105 publications

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

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

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

CO2-Optimization of Post-Tensioned Concrete Slab-Bridge Decks Using Surrogate Modeling

Contact Info

Product

Resources

About