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Abstract
According to a recent estimate, over 1.5 billion wasted tyres which containing over 40 % of vulcanised rubber and 15% of steel fibre are discarded yearly, which posing a serious threat to circular economy implementation and transition to net zero. To minimise the greenhouse gas(GHG) emission and the environmental side effect caused by burning and burying these waste tyres, recycling and reusing these materials for sustainable structural designs has become the centre of attention. This paper focuses on applying recycled bead steel fibre to improve the shear capacity of fibre-reinforced concrete beams. Moreover, the existing national standard known as Eurocode 2 and TR63 can hardly illustrate the relationship between fibre and high-strength concrete. This study is the first to investigate shear behaviours of high-strength industrial and recycled steel fibre reinforced concrete beams with consideration of different shear span ratios. Therefore, twenty real-scale beams are constructed to examine the shear capacity of high-strength industrial and recycled steel-fibre reinforced concrete beams, which aims to compare the improvement of shear strength through experiments and identify different shear strength improvements of the two categories of steel fibre. Besides, comprehensive data of 164 beams from previous studies have been collected to benchmark with the experimental results for the formula design. This study proves the feasibility of replacing industrial steel with recycled steel fibre to improve the shear capacity of fibre-reintroduced concrete beams. Moreover, there are six novel equations designed developed using Eurocode 2 and TR63 as a basis in this study. Based on the findings of the paper, the proposed formulas demonstrate remarkable accuracy, with an average value of 0.982 and standard deviation of 0.213, respectively. Following an exhaustive comparison of RSF and ISF reinforced concrete beams, with a focus on economic expenditure and GHG emissions, it can be concluded that RSF offers superior economic and environmental benefits, which reduce the emissions up to 25.39% and price up to 28.04% when replacing ISF 0.8% RSF, respectively.
Original language | English |
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Article number | 134509 |
Number of pages | 20 |
Journal | Construction and Building Materials |
Volume | 411 |
Early online date | 12 Dec 2023 |
DOIs | |
Publication status | Published - 12 Jan 2024 |
Bibliographical note
AcknowledgmentsThe authors are grateful to the European Commission for the financial sponsorship of the H2020-RISE Project No. 691135 “RISEN: Rail Infrastructure Systems Engineering Network,” which enables a global research network that tackles the grand challenge in railway infrastructure resilience and advanced sensing in extreme environments (www.risen2rail.eu) [47]. In addition, this project was partially supported by the European Commission’s Shift2Rail, H2020-S2R Project No. 730849 “S-Code: Switch and Crossing Optimal Design and Evaluation.” This article is partially based upon work from COST Action (Circular B — Implementation of Circular Economy in the Built Environment, CA21103), supported by COST (European Cooperation in Science and Technology). The APC has been kindly sponsored by the University of Birmingham Library’s Open Access Fund.
Keywords
- Shear improvement
- Recycled steel fibre
- Shear deficiency
- Waste management
- Sustainable design framework
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Dive into the research topics of 'Sustainable Design Framework for Enhancing Shear Capacity in Beams Using Recycled Steel Fiber-Reinforced High-Strength Concrete'. Together they form a unique fingerprint.Projects
- 1 Finished
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H2020_RISE_RISEN
Kaewunruen, S. (Principal Investigator)
European Commission - Management Costs, European Commission
1/04/16 → 30/09/21
Project: Research