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Development of green engineered cementitious composites with acceptable dynamic split resistance utilising recycled polymer fibres
https://orcid.org/0000-0002-9796-656X
Abstract Using recycled tyre polymer fibres (RTPF) to replace part of polyvinyl alcohol fibres (PVAF) is a strategy to produce green and economical engineered cementitious composites (ECC). This paper systematically investigated the influence of RTPF dosage (0.25–1.0 vol%) on split tensile performance of ECC under different strain rates. Results indicated that replacing PVAF with RTPF up to 0.5 vol% could still show a pronounced strain-hardening behaviour for ECC, although accompanied by a decrease in static split tensile strength. The dynamic split tensile performance of all ECC mixes was strongly sensitive to strain rate and all hybrid fibre reinforced ECC presented a greater strain rate effect than the mono-PVAF reinforced ECC. Under dynamic split tension, the specimens with various RTPF dosages could maintain their structural integrity. This paper suggested that RTPF can be adopted to replace part of PVAF to produce a greener and more economical ECC with satisfactory static and dynamic mechanical performance but the highest substitution amount should be set to 0.5 vol%.
Highlights The split tensile resistance of ECC was evaluated under strain rates up to 101 s−1. The influence of RTPF replacement content on dynamic performance was investigated. Acceptable dynamic split properties can be achieved through replacement of RTPF. The DIF fitting model of green ECC was developed using the improved bilinear model.
Development of green engineered cementitious composites with acceptable dynamic split resistance utilising recycled polymer fibres
https://orcid.org/0000-0002-9796-656X
Abstract Using recycled tyre polymer fibres (RTPF) to replace part of polyvinyl alcohol fibres (PVAF) is a strategy to produce green and economical engineered cementitious composites (ECC). This paper systematically investigated the influence of RTPF dosage (0.25–1.0 vol%) on split tensile performance of ECC under different strain rates. Results indicated that replacing PVAF with RTPF up to 0.5 vol% could still show a pronounced strain-hardening behaviour for ECC, although accompanied by a decrease in static split tensile strength. The dynamic split tensile performance of all ECC mixes was strongly sensitive to strain rate and all hybrid fibre reinforced ECC presented a greater strain rate effect than the mono-PVAF reinforced ECC. Under dynamic split tension, the specimens with various RTPF dosages could maintain their structural integrity. This paper suggested that RTPF can be adopted to replace part of PVAF to produce a greener and more economical ECC with satisfactory static and dynamic mechanical performance but the highest substitution amount should be set to 0.5 vol%.
Highlights The split tensile resistance of ECC was evaluated under strain rates up to 101 s−1. The influence of RTPF replacement content on dynamic performance was investigated. Acceptable dynamic split properties can be achieved through replacement of RTPF. The DIF fitting model of green ECC was developed using the improved bilinear model.
Development of green engineered cementitious composites with acceptable dynamic split resistance utilising recycled polymer fibres
https://orcid.org/0000-0002-9796-656X
Abstract Using recycled tyre polymer fibres (RTPF) to replace part of polyvinyl alcohol fibres (PVAF) is a strategy to produce green and economical engineered cementitious composites (ECC). This paper systematically investigated the influence of RTPF dosage (0.25–1.0 vol%) on split tensile performance of ECC under different strain rates. Results indicated that replacing PVAF with RTPF up to 0.5 vol% could still show a pronounced strain-hardening behaviour for ECC, although accompanied by a decrease in static split tensile strength. The dynamic split tensile performance of all ECC mixes was strongly sensitive to strain rate and all hybrid fibre reinforced ECC presented a greater strain rate effect than the mono-PVAF reinforced ECC. Under dynamic split tension, the specimens with various RTPF dosages could maintain their structural integrity. This paper suggested that RTPF can be adopted to replace part of PVAF to produce a greener and more economical ECC with satisfactory static and dynamic mechanical performance but the highest substitution amount should be set to 0.5 vol%.
Highlights The split tensile resistance of ECC was evaluated under strain rates up to 101 s−1. The influence of RTPF replacement content on dynamic performance was investigated. Acceptable dynamic split properties can be achieved through replacement of RTPF. The DIF fitting model of green ECC was developed using the improved bilinear model.
Development of green engineered cementitious composites with acceptable dynamic split resistance utilising recycled polymer fibres
Chen, Meng (author) / Jiang, Run (author) / Zhang, Tong (author) / Zhong, Hui (author) / Zhang, Mingzhong (author)
2024-01-09
Article (Journal)
Electronic Resource
English
Cementitious Composites Reinforced with Recycled Fibres
| Springer Verlag | 2017
Development of Green Engineered Cementitious Composites
| British Library Conference Proceedings | 2014