Flexural behaviour and evaluation of ultra-high-performance fibre reinforced concrete beams cured at room temperature

Abstract Heat treatment is often required for ultra-high-performance concrete (UHPC) to achieve high strength. To broad its use in construction, the effect of different curing conditions on the properties of UHPC has been developed for many years. The experimental investigation of large scale ultra-...

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Autores principales:	Jinlin Huang, Zhiying He, Muhammad Basit Ehsan Khan, Xiaohong Zheng, Zhibin Luo
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/d411e920dbd245f381fec7436e007487
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spelling	oai:doaj.org-article:d411e920dbd245f381fec7436e0074872021-12-02T18:14:00ZFlexural behaviour and evaluation of ultra-high-performance fibre reinforced concrete beams cured at room temperature10.1038/s41598-021-98502-x2045-2322https://doaj.org/article/d411e920dbd245f381fec7436e0074872021-09-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-98502-xhttps://doaj.org/toc/2045-2322Abstract Heat treatment is often required for ultra-high-performance concrete (UHPC) to achieve high strength. To broad its use in construction, the effect of different curing conditions on the properties of UHPC has been developed for many years. The experimental investigation of large scale ultra-high-performance fibre reinforced concrete (UHPFRC) beams is limited. In the present study, UHPFRC specimens and concrete cured at 20 °C were prepared to investigate the properties and flexural behaviour. The standard cubic compressive strength of UHPFRC specimens cannot be achieved at curing temperature of 20 °C. The bearing capacity under flexure was enhanced with the increase of reinforcement ratio. The failure modes of beams changed from ductile to brittle as the reinforcement ratio increased from 1.26 to 9.50%. The flexural behaviour of UHPFRC beams cured at room temperature was in accordance with the UHPFRC beams cured at high temperature in previous studies. In addition, the calculation model of CECS38-2004 underestimated the bending moment capacity of the under-reinforced UHPFRC beams (with reinforcement ratio from 0 to 7.85%) and overestimated the bending moment capacity of the UHPFRC beams with high reinforcement ration of 9.50%.Jinlin HuangZhiying HeMuhammad Basit Ehsan KhanXiaohong ZhengZhibin LuoNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-16 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Jinlin Huang Zhiying He Muhammad Basit Ehsan Khan Xiaohong Zheng Zhibin Luo Flexural behaviour and evaluation of ultra-high-performance fibre reinforced concrete beams cured at room temperature
description	Abstract Heat treatment is often required for ultra-high-performance concrete (UHPC) to achieve high strength. To broad its use in construction, the effect of different curing conditions on the properties of UHPC has been developed for many years. The experimental investigation of large scale ultra-high-performance fibre reinforced concrete (UHPFRC) beams is limited. In the present study, UHPFRC specimens and concrete cured at 20 °C were prepared to investigate the properties and flexural behaviour. The standard cubic compressive strength of UHPFRC specimens cannot be achieved at curing temperature of 20 °C. The bearing capacity under flexure was enhanced with the increase of reinforcement ratio. The failure modes of beams changed from ductile to brittle as the reinforcement ratio increased from 1.26 to 9.50%. The flexural behaviour of UHPFRC beams cured at room temperature was in accordance with the UHPFRC beams cured at high temperature in previous studies. In addition, the calculation model of CECS38-2004 underestimated the bending moment capacity of the under-reinforced UHPFRC beams (with reinforcement ratio from 0 to 7.85%) and overestimated the bending moment capacity of the UHPFRC beams with high reinforcement ration of 9.50%.
format	article
author	Jinlin Huang Zhiying He Muhammad Basit Ehsan Khan Xiaohong Zheng Zhibin Luo
author_facet	Jinlin Huang Zhiying He Muhammad Basit Ehsan Khan Xiaohong Zheng Zhibin Luo
author_sort	Jinlin Huang
title	Flexural behaviour and evaluation of ultra-high-performance fibre reinforced concrete beams cured at room temperature
title_short	Flexural behaviour and evaluation of ultra-high-performance fibre reinforced concrete beams cured at room temperature
title_full	Flexural behaviour and evaluation of ultra-high-performance fibre reinforced concrete beams cured at room temperature
title_fullStr	Flexural behaviour and evaluation of ultra-high-performance fibre reinforced concrete beams cured at room temperature
title_full_unstemmed	Flexural behaviour and evaluation of ultra-high-performance fibre reinforced concrete beams cured at room temperature
title_sort	flexural behaviour and evaluation of ultra-high-performance fibre reinforced concrete beams cured at room temperature
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/d411e920dbd245f381fec7436e007487
work_keys_str_mv	AT jinlinhuang flexuralbehaviourandevaluationofultrahighperformancefibrereinforcedconcretebeamscuredatroomtemperature AT zhiyinghe flexuralbehaviourandevaluationofultrahighperformancefibrereinforcedconcretebeamscuredatroomtemperature AT muhammadbasitehsankhan flexuralbehaviourandevaluationofultrahighperformancefibrereinforcedconcretebeamscuredatroomtemperature AT xiaohongzheng flexuralbehaviourandevaluationofultrahighperformancefibrereinforcedconcretebeamscuredatroomtemperature AT zhibinluo flexuralbehaviourandevaluationofultrahighperformancefibrereinforcedconcretebeamscuredatroomtemperature
_version_	1718378479872901120

Flexural behaviour and evaluation of ultra-high-performance fibre reinforced concrete beams cured at room temperature

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