Reproportioning of steel fibre reinforced concrete mixes and their impact resistance

Nataraja, M. C.; Nagaraj, T. S.; Basavaraja, S.B.

doi:10.1016/j.cemconres.2005.06.011

Cited by 97 publications

(47 citation statements)

References 3 publications

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“…The initial failure is the number of blows required to cause the first visible crack in specimen and the ultimate failure is the number of blows after which disc specimen fails and touches three of the four steel lugs of the test equipment 37,38 . Figure 2 show the results of compressive strength of WFRC in comparison to plain concrete.…”

Section: Impact Testmentioning

confidence: 99%

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Waste steel wires modified structural lightweight concrete

Aghaee

Yazdi

2014

Mat. Res.

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Nowadays, the use of different waste fibers in concrete has started to increase rapidly due to some reasons such as economic savings and positive effects on the environment. In this study, waste steel wires taken from reinforcement and formwork which were previously utilized in construction projects, were employed in structural lightweight concrete (SLWC). The objective was to investigate the possibility of using this type of fiber as reinforcement in the SLWC. Compressive, tensile, flexural and impact tests were performed for investigating the mechanical properties of 28-day reinforced lightweight concrete specimens with the waste wires. The percentage of wire in the fiber reinforced concrete (FRC) was 0.25%, 0.5% and 0.75% in the volume fraction of the concrete. According to the results, by using waste wires, flexural, tensile and impact characteristics of SLWC were effectively improved. Moreover, it was concluded that waste steel wires could be used as a suitable micro reinforcement in the SLWC.

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Section: Impact Testmentioning

confidence: 99%

“…Due to use of fibers having length of 50 mm, the test specimens were cut from a full-size cylinder to minimize alignment of the preferential fibers 36,37 . According to drop weight impact test method, disk specimens were struck by 4.5 kg dropping hammer from the height of 45cm, repeatedly.…”

Section: Impact Testmentioning

confidence: 99%

Waste steel wires modified structural lightweight concrete

Aghaee

Yazdi

2014

Mat. Res.

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“…Steel fibres significantly improve the impact resistance of concrete making it a suitable material for structures subjected to impact loads [5]. SFRC pavement eliminates spring load restrictions.…”

Section: Introductionmentioning

confidence: 99%

Proportioning of Steel Fibre Reinforced Concrete Mixes for Pavement Construction and Their Impact on Environment and Cost

et al. 2011

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Steel fibre reinforced concrete (SFRC) is a construction material investigated for more than 40 years including for pavement applications. A number of studies have demonstrated the technical merits of SFRC pavements over conventional concrete pavements; however little work has been carried out on the environmental and economical impact of SFRC during the pavement's life cycle. Therefore, extended research was undertaken within the framework of the EU funded project -EcoLanes‖ to estimate the environmental and economical loadings of SFRC pavements. The innovative concept of the project is the use of recycled steel tyre-cord wire as concrete fibre reinforcement, which provides additional environmental benefits for tyre recycling over landfilling. Within the project framework a demonstration of a steel-fibre-reinforced roller-compacted concrete (SFR-RCC) pavement was constructed in a rural area in Cyprus. In order to assess the economical and environmental picture of the demonstration pavement, life cycle cost analysis (LCCA) and life cycle assessment (LCA) studies were undertaken, which also compared the under study pavement design with four conventional alternatives. The main OPEN ACCESSSustainability 2011, 3 966 output of the studies is that SFR-RCC is more environmentally and economically sustainable than others. In addition, various concrete mix designs were investigated by considering parameters such as fibre type and dosage, cement type, and transportation distances to the construction site. Fibre dosage has been highlighted as a crucial factor compared with economical and environmental loadings in SFR-RCC pavement construction.

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“…Previous studies made by earlier researchers showed direct relationship between impact resistance of fiber reinforced concrete with concrete strength [16]- [19]. Lin and Suen [18], studied the effect of fibers and silica fume on abrasion and impact performance of concrete.…”

Section: Introductionmentioning

confidence: 99%

Impact Performance of Low Cement Ultra-High-Performance Concrete

Azmee¹,

Nuruddin²

2017

WIT Transactions on Ecology and the Environment

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Technology advancement in concrete industry and expanding interest for high quality construction materials have prompted the development of Ultra-High-Performance Concrete (UHPC). Despite of many advantages gained using UHPC, however, conventional design of UHPC poses many concerns especially on sustainability issues. Producing UHPC, requires relatively high amount of cement content and in most cases, the compositions are not optimized causing an increase in materials and energy cost. Low cement UHPC was proposed to minimize the economic and environmental disadvantages of current UHPC by incorporating high volume of Fly Ash (FA) and Silica Fume (SF) as cement replacement materials and locally available coarse aggregates. An experimental program was carried out to evaluate the effect of combined FA and SF on mechanical and impact performance of low cement UHPC. Both hooked and straight steel fibers with aspect ratio of 83 and 100 were used respectively as the reinforcing material. An enhancement of 111% was observed in impact resistance of the fibrous concretes with an incorporation of both FA and SF replacing 50% of cement, as compared to specimen without any replacement.

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Reproportioning of steel fibre reinforced concrete mixes and their impact resistance

Cited by 97 publications

References 3 publications

Waste steel wires modified structural lightweight concrete

Waste steel wires modified structural lightweight concrete

Proportioning of Steel Fibre Reinforced Concrete Mixes for Pavement Construction and Their Impact on Environment and Cost

Impact Performance of Low Cement Ultra-High-Performance Concrete

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