Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Behaviour of recycled tyre polymer fibre reinforced concrete at elevated temperatures
https://orcid.org/0000-0002-9315-5209
Abstract This paper presents a systematic study on the feasibility of using recycled tyre polymer (RTP) fibres for mitigating the damage of concrete induced by elevated temperatures. A series of tests were conducted to investigate the effect of RTP fibres on mechanical and thermal behaviour, pore pressure build-up and microstructural evolution of concrete exposed to elevated temperatures (20, 105, 250, 400 and 600 °C), based on which the mechanism of RTP fibres in mitigating damage of concrete was explored. Results indicate that the addition of RTP fibres effectively prevented pore pressure accumulation and significantly mitigated damage of concrete at high temperatures as the melting of RTP fibres and thermal incompatibility between RTP fibres and concrete promoted the formation of interconnected pore-microcrack network of concrete. RTP fibre was proved as a promising sustainable alternative to manufactured polymer fibres for enhancing high temperature and fire resistance of concrete. The optimal RTP fibre content was 1.2 kg/m3 considering the damage mitigation efficiency and strength loss.
Highlights Use of recycled tyre polymer (RTP) fibres for concrete was discussed. Microstructure and properties of concrete at elevated temperatures were studied. Damage evolution of concrete at elevated temperatures was investigated. Effect of RTP fibre on behaviour of concrete at elevated temperatures was explored. Optimal RTP fibre content for mitigating concrete damage was obtained.
Behaviour of recycled tyre polymer fibre reinforced concrete at elevated temperatures
https://orcid.org/0000-0002-9315-5209
Abstract This paper presents a systematic study on the feasibility of using recycled tyre polymer (RTP) fibres for mitigating the damage of concrete induced by elevated temperatures. A series of tests were conducted to investigate the effect of RTP fibres on mechanical and thermal behaviour, pore pressure build-up and microstructural evolution of concrete exposed to elevated temperatures (20, 105, 250, 400 and 600 °C), based on which the mechanism of RTP fibres in mitigating damage of concrete was explored. Results indicate that the addition of RTP fibres effectively prevented pore pressure accumulation and significantly mitigated damage of concrete at high temperatures as the melting of RTP fibres and thermal incompatibility between RTP fibres and concrete promoted the formation of interconnected pore-microcrack network of concrete. RTP fibre was proved as a promising sustainable alternative to manufactured polymer fibres for enhancing high temperature and fire resistance of concrete. The optimal RTP fibre content was 1.2 kg/m3 considering the damage mitigation efficiency and strength loss.
Highlights Use of recycled tyre polymer (RTP) fibres for concrete was discussed. Microstructure and properties of concrete at elevated temperatures were studied. Damage evolution of concrete at elevated temperatures was investigated. Effect of RTP fibre on behaviour of concrete at elevated temperatures was explored. Optimal RTP fibre content for mitigating concrete damage was obtained.
Behaviour of recycled tyre polymer fibre reinforced concrete at elevated temperatures
https://orcid.org/0000-0002-9315-5209
Abstract This paper presents a systematic study on the feasibility of using recycled tyre polymer (RTP) fibres for mitigating the damage of concrete induced by elevated temperatures. A series of tests were conducted to investigate the effect of RTP fibres on mechanical and thermal behaviour, pore pressure build-up and microstructural evolution of concrete exposed to elevated temperatures (20, 105, 250, 400 and 600 °C), based on which the mechanism of RTP fibres in mitigating damage of concrete was explored. Results indicate that the addition of RTP fibres effectively prevented pore pressure accumulation and significantly mitigated damage of concrete at high temperatures as the melting of RTP fibres and thermal incompatibility between RTP fibres and concrete promoted the formation of interconnected pore-microcrack network of concrete. RTP fibre was proved as a promising sustainable alternative to manufactured polymer fibres for enhancing high temperature and fire resistance of concrete. The optimal RTP fibre content was 1.2 kg/m3 considering the damage mitigation efficiency and strength loss.
Highlights Use of recycled tyre polymer (RTP) fibres for concrete was discussed. Microstructure and properties of concrete at elevated temperatures were studied. Damage evolution of concrete at elevated temperatures was investigated. Effect of RTP fibre on behaviour of concrete at elevated temperatures was explored. Optimal RTP fibre content for mitigating concrete damage was obtained.
Behaviour of recycled tyre polymer fibre reinforced concrete at elevated temperatures
Chen, Meng (Autor:in) / Sun, Zhihao (Autor:in) / Tu, Wenlin (Autor:in) / Yan, Xin (Autor:in) / Zhang, Mingzhong (Autor:in)
09.09.2021
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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