SEM image analysis in permeable recycled concretes with silica fume. A quantitative comparison of porosity and the ITZ

Recycled aggregates (RA) from construction and demolition can be used in permeable concretes (PC), improving the environment. PCs have a significant porous network, their cement paste and the interaction between the paste and the RA establishing their strength. Therefore, it is important to evaluate...

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Autores: Chinchillas Chinchillas, Manuel de Jesús, Rosas Casarez,, Carlos Antonio, Arredondo Rea, Susana Paola, Gómez Soberón, José Manuel Vicente|||0000-0002-7736-1504, Corral Higuera, Ramón
Tipo de documento: artigo
Data de publicação:2019
País:España
Recursos:Universitat Politècnica de Catalunya (UPC)
Repositório:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglês
OAI Identifier:oai:upcommons.upc.edu:2117/166779
Acesso em linha:https://hdl.handle.net/2117/166779
https://dx.doi.org/10.3390/ma12132201
Access Level:Acceso aberto
Palavra-chave:Porosity
Recycled products
Concrete -- Additives
porosity
recycled aggregates
permeable concrete
interfacial transition zone
image analysis
porosimetry mercury intrusion
Porositat
Productes reciclats
Formigó -- Additius
Àrees temàtiques de la UPC::Edificació::Materials de construcció::Ciment
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spelling SEM image analysis in permeable recycled concretes with silica fume. A quantitative comparison of porosity and the ITZChinchillas Chinchillas, Manuel de JesúsRosas Casarez,, Carlos AntonioArredondo Rea, Susana PaolaGómez Soberón, José Manuel Vicente|||0000-0002-7736-1504Corral Higuera, RamónPorosityRecycled productsConcrete -- Additivesporosityrecycled aggregatespermeable concreteinterfacial transition zoneimage analysisporosimetry mercury intrusionPorositatProductes reciclatsFormigó -- AdditiusÀrees temàtiques de la UPC::Edificació::Materials de construcció::CimentRecycled aggregates (RA) from construction and demolition can be used in permeable concretes (PC), improving the environment. PCs have a significant porous network, their cement paste and the interaction between the paste and the RA establishing their strength. Therefore, it is important to evaluate the porosity in the interfacial transition zones. The porosity of the cement paste, the aggregate and the interfacial transitional zones (ITZ) of a PC with recycled coarse aggregates (RCA) and silica fume (SF) is measured by means of image analysis–scanning electron microscope (IA)-(SEM) and by mapping the chemical elements with an SEM-EDS (energy dispersive spectrometer) detector microanalysis linked to the SEM and, as a contrast, the mercury intrusion porosimetry technique (MIP). In the IA process, a “mask” was created for the aggregate and another for the paste, which determined the porosity percentage (for the anhydrous material and the products of hydration). The results showed that using SF caused a reduction (32%) in the cement paste porosity in comparison with the PC with RA. The use of RA in the PC led to a significant increase (190%) in the porosity at different thicknesses of ITZ compared with the reference PC. Finally, the MIP study shows that the use of SF caused a decrease in the micropores, mesopores and macroporesPeer ReviewedMultidisciplinary Digital Publishing Institute (MDPI)20192019-07-0120192019-07-24journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/166779https://dx.doi.org/10.3390/ma12132201reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Attribution-NonCommercial-NoDerivs 3.0 Spainhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/1667792026-05-27T15:37:01Z
dc.title.none.fl_str_mv SEM image analysis in permeable recycled concretes with silica fume. A quantitative comparison of porosity and the ITZ
title SEM image analysis in permeable recycled concretes with silica fume. A quantitative comparison of porosity and the ITZ
spellingShingle SEM image analysis in permeable recycled concretes with silica fume. A quantitative comparison of porosity and the ITZ
Chinchillas Chinchillas, Manuel de Jesús
Porosity
Recycled products
Concrete -- Additives
porosity
recycled aggregates
permeable concrete
interfacial transition zone
image analysis
porosimetry mercury intrusion
Porositat
Productes reciclats
Formigó -- Additius
Àrees temàtiques de la UPC::Edificació::Materials de construcció::Ciment
title_short SEM image analysis in permeable recycled concretes with silica fume. A quantitative comparison of porosity and the ITZ
title_full SEM image analysis in permeable recycled concretes with silica fume. A quantitative comparison of porosity and the ITZ
title_fullStr SEM image analysis in permeable recycled concretes with silica fume. A quantitative comparison of porosity and the ITZ
title_full_unstemmed SEM image analysis in permeable recycled concretes with silica fume. A quantitative comparison of porosity and the ITZ
title_sort SEM image analysis in permeable recycled concretes with silica fume. A quantitative comparison of porosity and the ITZ
dc.creator.none.fl_str_mv Chinchillas Chinchillas, Manuel de Jesús
Rosas Casarez,, Carlos Antonio
Arredondo Rea, Susana Paola
Gómez Soberón, José Manuel Vicente|||0000-0002-7736-1504
Corral Higuera, Ramón
author Chinchillas Chinchillas, Manuel de Jesús
author_facet Chinchillas Chinchillas, Manuel de Jesús
Rosas Casarez,, Carlos Antonio
Arredondo Rea, Susana Paola
Gómez Soberón, José Manuel Vicente|||0000-0002-7736-1504
Corral Higuera, Ramón
author_role author
author2 Rosas Casarez,, Carlos Antonio
Arredondo Rea, Susana Paola
Gómez Soberón, José Manuel Vicente|||0000-0002-7736-1504
Corral Higuera, Ramón
author2_role author
author
author
author
dc.subject.none.fl_str_mv Porosity
Recycled products
Concrete -- Additives
porosity
recycled aggregates
permeable concrete
interfacial transition zone
image analysis
porosimetry mercury intrusion
Porositat
Productes reciclats
Formigó -- Additius
Àrees temàtiques de la UPC::Edificació::Materials de construcció::Ciment
topic Porosity
Recycled products
Concrete -- Additives
porosity
recycled aggregates
permeable concrete
interfacial transition zone
image analysis
porosimetry mercury intrusion
Porositat
Productes reciclats
Formigó -- Additius
Àrees temàtiques de la UPC::Edificació::Materials de construcció::Ciment
description Recycled aggregates (RA) from construction and demolition can be used in permeable concretes (PC), improving the environment. PCs have a significant porous network, their cement paste and the interaction between the paste and the RA establishing their strength. Therefore, it is important to evaluate the porosity in the interfacial transition zones. The porosity of the cement paste, the aggregate and the interfacial transitional zones (ITZ) of a PC with recycled coarse aggregates (RCA) and silica fume (SF) is measured by means of image analysis–scanning electron microscope (IA)-(SEM) and by mapping the chemical elements with an SEM-EDS (energy dispersive spectrometer) detector microanalysis linked to the SEM and, as a contrast, the mercury intrusion porosimetry technique (MIP). In the IA process, a “mask” was created for the aggregate and another for the paste, which determined the porosity percentage (for the anhydrous material and the products of hydration). The results showed that using SF caused a reduction (32%) in the cement paste porosity in comparison with the PC with RA. The use of RA in the PC led to a significant increase (190%) in the porosity at different thicknesses of ITZ compared with the reference PC. Finally, the MIP study shows that the use of SF caused a decrease in the micropores, mesopores and macropores
publishDate 2019
dc.date.none.fl_str_mv 2019
2019-07-01
2019
2019-07-24
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/2117/166779
https://dx.doi.org/10.3390/ma12132201
url https://hdl.handle.net/2117/166779
https://dx.doi.org/10.3390/ma12132201
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-NonCommercial-NoDerivs 3.0 Spain
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
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-NonCommercial-NoDerivs 3.0 Spain
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Multidisciplinary Digital Publishing Institute (MDPI)
publisher.none.fl_str_mv Multidisciplinary Digital Publishing Institute (MDPI)
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 15,301603

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