Thermal bridges in concrete structures: analysis of the conditions of filamental fungi development

Detalhes bibliográficos
Autor(a) principal: Freitas, Julye Ramalho de
Data de Publicação: 2020
Outros Autores: Leitzke, Rodrigo Karini, Cunha, Eduardo Grala da
Tipo de documento: Artigo
Idioma: eng
Título da fonte: PARC (Campinas)
Texto Completo: https://periodicos.sbu.unicamp.br/ojs/index.php/parc/article/view/8656062
Resumo: The importance of considering thermal bridges and their impacts on thermal transmittance calculation is an issue that has been discussed in cold season climate regions in Brazil. The presence of vulnerable points on the building envelope may affect thermal performance, besides the implications in the building walls and roofs' compositions, such as the filamentous fungi development. Internationally, it is observed the consideration of this theme in different rules and regulations. This study aims to discuss, through computer simulation, the need for Brazilian performance standards to consider the possibility of filamentous fungi formation in buildings with low and high thermal insulation. The analysis examines the thermo-hygrometric conditions near the building model's reinforced concrete structure where the thermal bridges occur and the surfaces of the vertical masonry enclosures for all facades. The results show a high probability of filamentous fungi growth in thermal bridges when the building is insulated, i.e., with low thermal transmittance. This study also points out that aspects related to the building's occupants, such as the control of natural humidity, can interfere with the indoor air's humidity level and, consequently, favor the formation of filamentous fungi.
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spelling Thermal bridges in concrete structures: analysis of the conditions of filamental fungi developmentPontes térmicas em estruturas de concreto: análise das condições de formação de fungos filamentososPontes térmicasFungos filamentososSimulação computacionalThermal bridgesFilamentous fungiComputational simulationThe importance of considering thermal bridges and their impacts on thermal transmittance calculation is an issue that has been discussed in cold season climate regions in Brazil. The presence of vulnerable points on the building envelope may affect thermal performance, besides the implications in the building walls and roofs' compositions, such as the filamentous fungi development. Internationally, it is observed the consideration of this theme in different rules and regulations. This study aims to discuss, through computer simulation, the need for Brazilian performance standards to consider the possibility of filamentous fungi formation in buildings with low and high thermal insulation. The analysis examines the thermo-hygrometric conditions near the building model's reinforced concrete structure where the thermal bridges occur and the surfaces of the vertical masonry enclosures for all facades. The results show a high probability of filamentous fungi growth in thermal bridges when the building is insulated, i.e., with low thermal transmittance. This study also points out that aspects related to the building's occupants, such as the control of natural humidity, can interfere with the indoor air's humidity level and, consequently, favor the formation of filamentous fungi.A importância de considerar as pontes térmicas e seus impactos no cálculo de transmitância térmica é um assunto que tem sido discutido em regiões de clima com estação fria no Brasil. A presença de pontos vulneráveis no envelope do edifício pode ter consequências no desempenho térmico, além das implicações nas paredes e coberturas do edifício, como por exemplo a formação de fungos filamentosos. Várias normas e regulamentos tratam da temática. Esse estudo tem por objetivo discutir, por intermédio de simulação computacional, a necessidade das normas Brasileiras de desempenho considerarem a possibilidade de formação de fungos filamentosos nas edificações com baixo e elevado isolamento térmico. Na análise examina-se as condições termo-higrométricas próximas a estrutura de concreto armado do modelo da edificação onde ocorrem as pontes térmicas, e as superfícies dos fechamentos vertical, de alvenaria, para todas as fachadas. Os resultados mostram que existe uma elevada probabilidade de crescimento dos fungos filamentosos nas pontes térmicas quando o edifício é mais isolado, ou seja, apresenta baixa transmitância térmica.Universidade Estadual de Campinas2020-12-18info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionTextoinfo:eu-repo/semantics/otherapplication/pdfhttps://periodicos.sbu.unicamp.br/ojs/index.php/parc/article/view/865606210.20396/parc.v11i0.8656062PARC Pesquisa em Arquitetura e Construção; Vol. 11 (2020): Continuous publication; e020027PARC Pesquisa em Arquitetura e Construção; Vol. 11 (2020): Publicação contínua; e020027PARC Pesquisa em Arquitetura e Construção; v. 11 (2020): Publicação contínua; e0200271980-6809reponame:PARC (Campinas)instname:Universidade Estadual de Campinas (UNICAMP)instacron:UNICAMPenghttps://periodicos.sbu.unicamp.br/ojs/index.php/parc/article/view/8656062/25693South region of Brazil; ComtemporaryRegião Sul do Brasil; ContemporâneoCopyright (c) 2020 PARC Pesquisa em Arquitetura e Construçãohttps://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccessFreitas, Julye Ramalho deLeitzke, Rodrigo KariniCunha, Eduardo Grala da2021-01-29T11:46:58Zoai:ojs.periodicos.sbu.unicamp.br:article/8656062Revistahttp://periodicos.sbu.unicamp.br/ojs/index.php/parcPUBhttps://periodicos.sbu.unicamp.br/ojs/index.php/parc/oai||parc@fec.unicamp.br1980-68091980-6809opendoar:2021-01-29T11:46:58PARC (Campinas) - Universidade Estadual de Campinas (UNICAMP)false
dc.title.none.fl_str_mv Thermal bridges in concrete structures: analysis of the conditions of filamental fungi development
Pontes térmicas em estruturas de concreto: análise das condições de formação de fungos filamentosos
title Thermal bridges in concrete structures: analysis of the conditions of filamental fungi development
spellingShingle Thermal bridges in concrete structures: analysis of the conditions of filamental fungi development
Freitas, Julye Ramalho de
Pontes térmicas
Fungos filamentosos
Simulação computacional
Thermal bridges
Filamentous fungi
Computational simulation
title_short Thermal bridges in concrete structures: analysis of the conditions of filamental fungi development
title_full Thermal bridges in concrete structures: analysis of the conditions of filamental fungi development
title_fullStr Thermal bridges in concrete structures: analysis of the conditions of filamental fungi development
title_full_unstemmed Thermal bridges in concrete structures: analysis of the conditions of filamental fungi development
title_sort Thermal bridges in concrete structures: analysis of the conditions of filamental fungi development
author Freitas, Julye Ramalho de
author_facet Freitas, Julye Ramalho de
Leitzke, Rodrigo Karini
Cunha, Eduardo Grala da
author_role author
author2 Leitzke, Rodrigo Karini
Cunha, Eduardo Grala da
author2_role author
author
dc.contributor.author.fl_str_mv Freitas, Julye Ramalho de
Leitzke, Rodrigo Karini
Cunha, Eduardo Grala da
dc.subject.por.fl_str_mv Pontes térmicas
Fungos filamentosos
Simulação computacional
Thermal bridges
Filamentous fungi
Computational simulation
topic Pontes térmicas
Fungos filamentosos
Simulação computacional
Thermal bridges
Filamentous fungi
Computational simulation
description The importance of considering thermal bridges and their impacts on thermal transmittance calculation is an issue that has been discussed in cold season climate regions in Brazil. The presence of vulnerable points on the building envelope may affect thermal performance, besides the implications in the building walls and roofs' compositions, such as the filamentous fungi development. Internationally, it is observed the consideration of this theme in different rules and regulations. This study aims to discuss, through computer simulation, the need for Brazilian performance standards to consider the possibility of filamentous fungi formation in buildings with low and high thermal insulation. The analysis examines the thermo-hygrometric conditions near the building model's reinforced concrete structure where the thermal bridges occur and the surfaces of the vertical masonry enclosures for all facades. The results show a high probability of filamentous fungi growth in thermal bridges when the building is insulated, i.e., with low thermal transmittance. This study also points out that aspects related to the building's occupants, such as the control of natural humidity, can interfere with the indoor air's humidity level and, consequently, favor the formation of filamentous fungi.
publishDate 2020
dc.date.none.fl_str_mv 2020-12-18
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Texto
info:eu-repo/semantics/other
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://periodicos.sbu.unicamp.br/ojs/index.php/parc/article/view/8656062
10.20396/parc.v11i0.8656062
url https://periodicos.sbu.unicamp.br/ojs/index.php/parc/article/view/8656062
identifier_str_mv 10.20396/parc.v11i0.8656062
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://periodicos.sbu.unicamp.br/ojs/index.php/parc/article/view/8656062/25693
dc.rights.driver.fl_str_mv Copyright (c) 2020 PARC Pesquisa em Arquitetura e Construção
https://creativecommons.org/licenses/by/4.0
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Copyright (c) 2020 PARC Pesquisa em Arquitetura e Construção
https://creativecommons.org/licenses/by/4.0
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.coverage.none.fl_str_mv South region of Brazil; Comtemporary
Região Sul do Brasil; Contemporâneo
dc.publisher.none.fl_str_mv Universidade Estadual de Campinas
publisher.none.fl_str_mv Universidade Estadual de Campinas
dc.source.none.fl_str_mv PARC Pesquisa em Arquitetura e Construção; Vol. 11 (2020): Continuous publication; e020027
PARC Pesquisa em Arquitetura e Construção; Vol. 11 (2020): Publicação contínua; e020027
PARC Pesquisa em Arquitetura e Construção; v. 11 (2020): Publicação contínua; e020027
1980-6809
reponame:PARC (Campinas)
instname:Universidade Estadual de Campinas (UNICAMP)
instacron:UNICAMP
instname_str Universidade Estadual de Campinas (UNICAMP)
instacron_str UNICAMP
institution UNICAMP
reponame_str PARC (Campinas)
collection PARC (Campinas)
repository.name.fl_str_mv PARC (Campinas) - Universidade Estadual de Campinas (UNICAMP)
repository.mail.fl_str_mv ||parc@fec.unicamp.br
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