Basic digital image color analysis for nondestructive testing of setting and curing process of building products: application to thin render layers sprayed at building site

Many building products are put in place in liquid or plastic state. During the first hours and days, the products set and dry, changing their mechanical properties, and their visual aspect also changes in parallel because of the hardening process. In the case of sprayed products, the technical super...

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Detalles Bibliográficos
Autores: Agena Kanashiro, Felipe Arturo, Zamora i Mestre, Joan-Lluís|||0000-0002-7705-6171
Tipo de recurso: artículo
Fecha de publicación:2021
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:2117/360220
Acceso en línea:https://hdl.handle.net/2117/360220
https://dx.doi.org/10.1520/JTE20200523
Access Level:acceso abierto
Palabra clave:Buildings - Repair and reconstruction
Edificis--Remodelació
Àrees temàtiques de la UPC::Edificació::Elements constructius d'edificis
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spelling Basic digital image color analysis for nondestructive testing of setting and curing process of building products: application to thin render layers sprayed at building siteAgena Kanashiro, Felipe ArturoZamora i Mestre, Joan-Lluís|||0000-0002-7705-6171Buildings - Repair and reconstructionEdificis--RemodelacióÀrees temàtiques de la UPC::Edificació::Elements constructius d'edificisMany building products are put in place in liquid or plastic state. During the first hours and days, the products set and dry, changing their mechanical properties, and their visual aspect also changes in parallel because of the hardening process. In the case of sprayed products, the technical supervisor must know at any time the quality of every sprayed layer and finally determine when it has reached its point of maturity that allows considering it as ready or suitable to receive the next layer. Experimented professionals often use personal visual ability to recognize the evolution of visual colors and surface textures of thin render layers applied on site as capacity to determine this right moment, especially in the case of dry mix sprayed products that harden progressively during curing process. However, these visual assessments are not considered decisive as a technical procedure to assess the evolution of the sprayed product properties. As they are thin layers, it can be considered that the information acquired from their surface is sufficiently representative of their interior qualities. The aim of this study is to correlate information obtained in successive local measurements of humidity and penetration resistance taken on the early surface of a dry mix product just sprayed (portland cement mortar and gypsum plaster) during its setting phase and to compare it with its surface digital color evolution during this process. The goal was to explore whether it is possible to establish a relationship between evolution of resistance penetration and evolution of some digital image basic parameters during the setting and drying period. If this relationship were sufficient, conventional point-to-point contact tests (destructive tests) could be replaced in the future by nondestructive surface visual tests. This is very useful at the building site where there are big surfaces to assess and only a short time to make the right decisions.Peer Reviewed20212021-11-0120222022-01-20journal articlehttp://purl.org/coar/resource_type/c_6501AMhttp://purl.org/coar/version/c_ab4af688f83e57aainfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/360220https://dx.doi.org/10.1520/JTE20200523reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/3602202026-05-27T15:37:01Z
dc.title.none.fl_str_mv Basic digital image color analysis for nondestructive testing of setting and curing process of building products: application to thin render layers sprayed at building site
title Basic digital image color analysis for nondestructive testing of setting and curing process of building products: application to thin render layers sprayed at building site
spellingShingle Basic digital image color analysis for nondestructive testing of setting and curing process of building products: application to thin render layers sprayed at building site
Agena Kanashiro, Felipe Arturo
Buildings - Repair and reconstruction
Edificis--Remodelació
Àrees temàtiques de la UPC::Edificació::Elements constructius d'edificis
title_short Basic digital image color analysis for nondestructive testing of setting and curing process of building products: application to thin render layers sprayed at building site
title_full Basic digital image color analysis for nondestructive testing of setting and curing process of building products: application to thin render layers sprayed at building site
title_fullStr Basic digital image color analysis for nondestructive testing of setting and curing process of building products: application to thin render layers sprayed at building site
title_full_unstemmed Basic digital image color analysis for nondestructive testing of setting and curing process of building products: application to thin render layers sprayed at building site
title_sort Basic digital image color analysis for nondestructive testing of setting and curing process of building products: application to thin render layers sprayed at building site
dc.creator.none.fl_str_mv Agena Kanashiro, Felipe Arturo
Zamora i Mestre, Joan-Lluís|||0000-0002-7705-6171
author Agena Kanashiro, Felipe Arturo
author_facet Agena Kanashiro, Felipe Arturo
Zamora i Mestre, Joan-Lluís|||0000-0002-7705-6171
author_role author
author2 Zamora i Mestre, Joan-Lluís|||0000-0002-7705-6171
author2_role author
dc.subject.none.fl_str_mv Buildings - Repair and reconstruction
Edificis--Remodelació
Àrees temàtiques de la UPC::Edificació::Elements constructius d'edificis
topic Buildings - Repair and reconstruction
Edificis--Remodelació
Àrees temàtiques de la UPC::Edificació::Elements constructius d'edificis
description Many building products are put in place in liquid or plastic state. During the first hours and days, the products set and dry, changing their mechanical properties, and their visual aspect also changes in parallel because of the hardening process. In the case of sprayed products, the technical supervisor must know at any time the quality of every sprayed layer and finally determine when it has reached its point of maturity that allows considering it as ready or suitable to receive the next layer. Experimented professionals often use personal visual ability to recognize the evolution of visual colors and surface textures of thin render layers applied on site as capacity to determine this right moment, especially in the case of dry mix sprayed products that harden progressively during curing process. However, these visual assessments are not considered decisive as a technical procedure to assess the evolution of the sprayed product properties. As they are thin layers, it can be considered that the information acquired from their surface is sufficiently representative of their interior qualities. The aim of this study is to correlate information obtained in successive local measurements of humidity and penetration resistance taken on the early surface of a dry mix product just sprayed (portland cement mortar and gypsum plaster) during its setting phase and to compare it with its surface digital color evolution during this process. The goal was to explore whether it is possible to establish a relationship between evolution of resistance penetration and evolution of some digital image basic parameters during the setting and drying period. If this relationship were sufficient, conventional point-to-point contact tests (destructive tests) could be replaced in the future by nondestructive surface visual tests. This is very useful at the building site where there are big surfaces to assess and only a short time to make the right decisions.
publishDate 2021
dc.date.none.fl_str_mv 2021
2021-11-01
2022
2022-01-20
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
AM
http://purl.org/coar/version/c_ab4af688f83e57aa
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/2117/360220
https://dx.doi.org/10.1520/JTE20200523
url https://hdl.handle.net/2117/360220
https://dx.doi.org/10.1520/JTE20200523
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
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
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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