Effect of coarse recycled aggregate with embedded fibres on the mechanical properties and microstructure of polypropylene fibre-reinforced concrete

Previous studies have shown the feasibility of using recycled aggregates in new concrete production. However, the recycling of fibre-reinforced concrete (FRC) introduces a novel challenge: the emergence of a new aggregate type that can be identified as recycled aggregate with embedded fibres. Theref...

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Autores: Liu, Guanzhi, Claramunt Blanes, Josep|||0000-0003-3546-5943, Hunger, Martin, Tošić, Nikola|||0000-0003-0242-8804, Fuente Antequera, Albert de la|||0000-0002-8016-1677
Tipo de recurso: artículo
Fecha de publicación:2024
País:España
Institución:Universitat Politècnica de Catalunya (UPC)
Repositorio:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglés
OAI Identifier:oai:upcommons.upc.edu:2117/420967
Acceso en línea:https://hdl.handle.net/2117/420967
https://dx.doi.org/10.1617/s11527-024-02527-3
Access Level:acceso abierto
Palabra clave:Recycled aggregate with embedded fibre
PPFRC
Stress–strain behaviour
Flexural behaviour
Microstructure
Àrees temàtiques de la UPC::Enginyeria civil::Materials i estructures::Materials i estructures de formigó
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spelling Effect of coarse recycled aggregate with embedded fibres on the mechanical properties and microstructure of polypropylene fibre-reinforced concreteLiu, GuanzhiClaramunt Blanes, Josep|||0000-0003-3546-5943Hunger, MartinTošić, Nikola|||0000-0003-0242-8804Fuente Antequera, Albert de la|||0000-0002-8016-1677Recycled aggregate with embedded fibrePPFRCStress–strain behaviourFlexural behaviourMicrostructureÀrees temàtiques de la UPC::Enginyeria civil::Materials i estructures::Materials i estructures de formigóPrevious studies have shown the feasibility of using recycled aggregates in new concrete production. However, the recycling of fibre-reinforced concrete (FRC) introduces a novel challenge: the emergence of a new aggregate type that can be identified as recycled aggregate with embedded fibres. Therefore, in this study, in order to investigate the differences, the mechanical properties and microstructures of polypropylene fibre-reinforced concrete (PPFRC) made of natural coarse aggregate, coarse recycled aggregate and coarse recycled aggregate with embedded fibres were compared. Polypropylene fibre contents of 3 and 9 kg/m3 (0.33% and 1.0% by volume, respectively) were chosen for all concretes. The mechanical properties, including stress–strain behaviour in compression and flexural behavior, were tested. Scanning electron microscopy (SEM) was used to examine the microstructure and elucidate the effects of different aggregates on PPFRC properties. The results indicated that recycled aggregate with embedded fibres did not enhance compressive strength and elastic modulus compared to recycled aggregate without fibres. However, when the fibre content is low, its contribution to flexural behavior is significant, even surpassing that of PPFRC made with natural aggregate.Peer Reviewed20242024-12-0120242024-12-18journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/420967https://dx.doi.org/10.1617/s11527-024-02527-3reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Attribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/4209672026-05-27T15:37:01Z
dc.title.none.fl_str_mv Effect of coarse recycled aggregate with embedded fibres on the mechanical properties and microstructure of polypropylene fibre-reinforced concrete
title Effect of coarse recycled aggregate with embedded fibres on the mechanical properties and microstructure of polypropylene fibre-reinforced concrete
spellingShingle Effect of coarse recycled aggregate with embedded fibres on the mechanical properties and microstructure of polypropylene fibre-reinforced concrete
Liu, Guanzhi
Recycled aggregate with embedded fibre
PPFRC
Stress–strain behaviour
Flexural behaviour
Microstructure
Àrees temàtiques de la UPC::Enginyeria civil::Materials i estructures::Materials i estructures de formigó
title_short Effect of coarse recycled aggregate with embedded fibres on the mechanical properties and microstructure of polypropylene fibre-reinforced concrete
title_full Effect of coarse recycled aggregate with embedded fibres on the mechanical properties and microstructure of polypropylene fibre-reinforced concrete
title_fullStr Effect of coarse recycled aggregate with embedded fibres on the mechanical properties and microstructure of polypropylene fibre-reinforced concrete
title_full_unstemmed Effect of coarse recycled aggregate with embedded fibres on the mechanical properties and microstructure of polypropylene fibre-reinforced concrete
title_sort Effect of coarse recycled aggregate with embedded fibres on the mechanical properties and microstructure of polypropylene fibre-reinforced concrete
dc.creator.none.fl_str_mv Liu, Guanzhi
Claramunt Blanes, Josep|||0000-0003-3546-5943
Hunger, Martin
Tošić, Nikola|||0000-0003-0242-8804
Fuente Antequera, Albert de la|||0000-0002-8016-1677
author Liu, Guanzhi
author_facet Liu, Guanzhi
Claramunt Blanes, Josep|||0000-0003-3546-5943
Hunger, Martin
Tošić, Nikola|||0000-0003-0242-8804
Fuente Antequera, Albert de la|||0000-0002-8016-1677
author_role author
author2 Claramunt Blanes, Josep|||0000-0003-3546-5943
Hunger, Martin
Tošić, Nikola|||0000-0003-0242-8804
Fuente Antequera, Albert de la|||0000-0002-8016-1677
author2_role author
author
author
author
dc.subject.none.fl_str_mv Recycled aggregate with embedded fibre
PPFRC
Stress–strain behaviour
Flexural behaviour
Microstructure
Àrees temàtiques de la UPC::Enginyeria civil::Materials i estructures::Materials i estructures de formigó
topic Recycled aggregate with embedded fibre
PPFRC
Stress–strain behaviour
Flexural behaviour
Microstructure
Àrees temàtiques de la UPC::Enginyeria civil::Materials i estructures::Materials i estructures de formigó
description Previous studies have shown the feasibility of using recycled aggregates in new concrete production. However, the recycling of fibre-reinforced concrete (FRC) introduces a novel challenge: the emergence of a new aggregate type that can be identified as recycled aggregate with embedded fibres. Therefore, in this study, in order to investigate the differences, the mechanical properties and microstructures of polypropylene fibre-reinforced concrete (PPFRC) made of natural coarse aggregate, coarse recycled aggregate and coarse recycled aggregate with embedded fibres were compared. Polypropylene fibre contents of 3 and 9 kg/m3 (0.33% and 1.0% by volume, respectively) were chosen for all concretes. The mechanical properties, including stress–strain behaviour in compression and flexural behavior, were tested. Scanning electron microscopy (SEM) was used to examine the microstructure and elucidate the effects of different aggregates on PPFRC properties. The results indicated that recycled aggregate with embedded fibres did not enhance compressive strength and elastic modulus compared to recycled aggregate without fibres. However, when the fibre content is low, its contribution to flexural behavior is significant, even surpassing that of PPFRC made with natural aggregate.
publishDate 2024
dc.date.none.fl_str_mv 2024
2024-12-01
2024
2024-12-18
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/2117/420967
https://dx.doi.org/10.1617/s11527-024-02527-3
url https://hdl.handle.net/2117/420967
https://dx.doi.org/10.1617/s11527-024-02527-3
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:UPCommons. Portal del coneixement obert de la UPC
instname:Universitat Politècnica de Catalunya (UPC)
instname_str Universitat Politècnica de Catalunya (UPC)
reponame_str UPCommons. Portal del coneixement obert de la UPC
collection UPCommons. Portal del coneixement obert de la UPC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,811543

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