Porous Structure of Ultra-High-Performance Fibre-Reinforced Concretes

[EN] The aim of this experimental work was to study the porous structure of Ultra-High-Performance Fibre-Reinforced Concretes (UH) made with different fibre volume contents (0%, 1%, 2%) under several curing conditions (laboratory environment, 20 degrees C, 60 degrees C, 90 degrees C), comparing the...

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Autores: Valcuende Payá, Manuel Octavio|||0000-0002-9967-1554, Lliso-Ferrando, Josep Ramon|||0000-0002-2457-9024, Gandía-Romero, Jose M.|||0000-0003-0257-3286, Roig-Flores, Marta
Tipo de recurso: artículo
Fecha de publicación:2021
País:España
Institución:Universitat Politècnica de València (UPV)
Repositorio:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
Idioma:inglés
OAI Identifier:oai:riunet.upv.es:10251/180038
Acceso en línea:https://riunet.upv.es/handle/10251/180038
Access Level:acceso abierto
Palabra clave:Ultra-high-performance fibre-reinforced concrete
Porosity
Water porosity
Oxygen permeability
CONSTRUCCIONES ARQUITECTONICAS
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repository_id_str
spelling Porous Structure of Ultra-High-Performance Fibre-Reinforced ConcretesValcuende Payá, Manuel Octavio|||0000-0002-9967-1554Lliso-Ferrando, Josep Ramon|||0000-0002-2457-9024Gandía-Romero, Jose M.|||0000-0003-0257-3286Roig-Flores, MartaUltra-high-performance fibre-reinforced concretePorosityWater porosityOxygen permeabilityCONSTRUCCIONES ARQUITECTONICAS[EN] The aim of this experimental work was to study the porous structure of Ultra-High-Performance Fibre-Reinforced Concretes (UH) made with different fibre volume contents (0%, 1%, 2%) under several curing conditions (laboratory environment, 20 degrees C, 60 degrees C, 90 degrees C), comparing the results with those recorded for ordinary, high strength and very high strength concretes. Scanning electron microscopy, mercury intrusion porosimetry, thermogravimetry, water absorption and oxygen permeability tests were carried out. The results showed a low portlandite content in UH (in the order of 75% lower than in concrete C50) and a low degree of hydration, but they rise with curing temperature. These concretes have a very fine porous structure, with a high concentration of pores on the nanoscale level, below 0.05 mu m. Their porosity accessible to water is consequently around 7-fold lower than in conventional (C30), 6-fold lower than in high-strength (C50) and 4-fold lower than in very high-strength (C90) concretes. Their oxygen permeability is at least one order of magnitude lower than in C90, two orders of magnitude lower than in C50 and three orders of magnitude lower than in C30. The percentage of added steel fibre does not affect the UH porous structureThis research was funded by Ministerio de Economia Y Competitividad (Agencia Estatal de Investigacion) of the Spanish Government, Grant number BIA2016-78460-C3-3-RMDPI AGDepartamento de Construcciones ArquitectónicasEscuela Técnica Superior de ArquitecturaEscuela Técnica Superior de Ingeniería de EdificaciónInstituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo TecnológicoCentro de Investigación de Tecnología de la EdificaciónAGENCIA ESTATAL DE INVESTIGACIONRepositorio Institucional de la Universitat Politècnica de València Riunet20212021-04-01journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://riunet.upv.es/handle/10251/180038reponame:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valénciainstname:Universitat Politècnica de València (UPV)InglésengAgencia Estatal de Investigación http://dx.doi.org/10.13039/501100011033 BIA2016-78460-C3-3-R DURABILIDAD Y VIDA UTIL DEL HORMIGON DE MUY ALTO RENDIMIENTOopen accesshttp://purl.org/coar/access_right/c_abf2Reconocimiento (by)http://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:riunet.upv.es:10251/1800382026-06-13T07:49:27Z
dc.title.none.fl_str_mv Porous Structure of Ultra-High-Performance Fibre-Reinforced Concretes
title Porous Structure of Ultra-High-Performance Fibre-Reinforced Concretes
spellingShingle Porous Structure of Ultra-High-Performance Fibre-Reinforced Concretes
Valcuende Payá, Manuel Octavio|||0000-0002-9967-1554
Ultra-high-performance fibre-reinforced concrete
Porosity
Water porosity
Oxygen permeability
CONSTRUCCIONES ARQUITECTONICAS
title_short Porous Structure of Ultra-High-Performance Fibre-Reinforced Concretes
title_full Porous Structure of Ultra-High-Performance Fibre-Reinforced Concretes
title_fullStr Porous Structure of Ultra-High-Performance Fibre-Reinforced Concretes
title_full_unstemmed Porous Structure of Ultra-High-Performance Fibre-Reinforced Concretes
title_sort Porous Structure of Ultra-High-Performance Fibre-Reinforced Concretes
dc.creator.none.fl_str_mv Valcuende Payá, Manuel Octavio|||0000-0002-9967-1554
Lliso-Ferrando, Josep Ramon|||0000-0002-2457-9024
Gandía-Romero, Jose M.|||0000-0003-0257-3286
Roig-Flores, Marta
author Valcuende Payá, Manuel Octavio|||0000-0002-9967-1554
author_facet Valcuende Payá, Manuel Octavio|||0000-0002-9967-1554
Lliso-Ferrando, Josep Ramon|||0000-0002-2457-9024
Gandía-Romero, Jose M.|||0000-0003-0257-3286
Roig-Flores, Marta
author_role author
author2 Lliso-Ferrando, Josep Ramon|||0000-0002-2457-9024
Gandía-Romero, Jose M.|||0000-0003-0257-3286
Roig-Flores, Marta
author2_role author
author
author
dc.contributor.none.fl_str_mv Departamento de Construcciones Arquitectónicas
Escuela Técnica Superior de Arquitectura
Escuela Técnica Superior de Ingeniería de Edificación
Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico
Centro de Investigación de Tecnología de la Edificación
AGENCIA ESTATAL DE INVESTIGACION
Repositorio Institucional de la Universitat Politècnica de València Riunet
dc.subject.none.fl_str_mv Ultra-high-performance fibre-reinforced concrete
Porosity
Water porosity
Oxygen permeability
CONSTRUCCIONES ARQUITECTONICAS
topic Ultra-high-performance fibre-reinforced concrete
Porosity
Water porosity
Oxygen permeability
CONSTRUCCIONES ARQUITECTONICAS
description [EN] The aim of this experimental work was to study the porous structure of Ultra-High-Performance Fibre-Reinforced Concretes (UH) made with different fibre volume contents (0%, 1%, 2%) under several curing conditions (laboratory environment, 20 degrees C, 60 degrees C, 90 degrees C), comparing the results with those recorded for ordinary, high strength and very high strength concretes. Scanning electron microscopy, mercury intrusion porosimetry, thermogravimetry, water absorption and oxygen permeability tests were carried out. The results showed a low portlandite content in UH (in the order of 75% lower than in concrete C50) and a low degree of hydration, but they rise with curing temperature. These concretes have a very fine porous structure, with a high concentration of pores on the nanoscale level, below 0.05 mu m. Their porosity accessible to water is consequently around 7-fold lower than in conventional (C30), 6-fold lower than in high-strength (C50) and 4-fold lower than in very high-strength (C90) concretes. Their oxygen permeability is at least one order of magnitude lower than in C90, two orders of magnitude lower than in C50 and three orders of magnitude lower than in C30. The percentage of added steel fibre does not affect the UH porous structure
publishDate 2021
dc.date.none.fl_str_mv 2021
2021-04-01
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://riunet.upv.es/handle/10251/180038
url https://riunet.upv.es/handle/10251/180038
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv Agencia Estatal de Investigación http://dx.doi.org/10.13039/501100011033 BIA2016-78460-C3-3-R DURABILIDAD Y VIDA UTIL DEL HORMIGON DE MUY ALTO RENDIMIENTO
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Reconocimiento (by)
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
Reconocimiento (by)
http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv MDPI AG
publisher.none.fl_str_mv MDPI AG
dc.source.none.fl_str_mv reponame:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
instname:Universitat Politècnica de València (UPV)
instname_str Universitat Politècnica de València (UPV)
reponame_str RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
collection RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869408966484688896
score 15.300724

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