Thermal performance of sisal fiber-cement roofing tiles for rural constructions

Detalhes bibliográficos
Autor(a) principal: Tonoli, Gustavo Henrique Denzin
Data de Publicação: 2011
Outros Autores: Santos, Sérgio Francisco dos, Rabi, José Antonio, Santos, Wilson Nunes dos, Savastano Junior, Holmer
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Scientia Agrícola (Online)
Texto Completo: https://www.revistas.usp.br/sa/article/view/22628
Resumo: Roofing provides the main protection against direct solar radiation in animal housing. Appropriate thermal properties of roofing materials tend to improve the thermal comfort in the inner ambient. Nonasbestos fiber-cement roofing components reinforced with cellulose pulp from sisal (Agave sisalana) were produced by slurry and dewatering techniques, with an optional addition of polypropylene fibers. Nonasbestos tiles were evaluated and compared with commercially available asbestos-cement sheets and ceramic tiles (frequently chosen as roofing materials for animal housing). Thermal conductivity and thermal diffusivity of tiles were determined by the parallel hot-wire method, along with the evaluation of the downside surface temperature. Cement-based components reinforced with sisal pulp presented better thermal performance at room temperature (25ºC), while those reinforced with sisal pulp added by polypropylene fibers presented better thermal performance at 60ºC. Non-asbestos cement tiles provided more efficient protection against radiation than asbestos corrugated sheets.
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spelling Thermal performance of sisal fiber-cement roofing tiles for rural constructions Desempenho térmico de telhas de fibrocimento reforçadas com polpa de sisal para construções rurais cellulose pulppolypropylene fiberthermal comfortparallel hot-wire methodthermal conductivitypolpa de celulosefibras de polipropilenoconforto térmicométodo do fio quente paralelocondutividade térmica Roofing provides the main protection against direct solar radiation in animal housing. Appropriate thermal properties of roofing materials tend to improve the thermal comfort in the inner ambient. Nonasbestos fiber-cement roofing components reinforced with cellulose pulp from sisal (Agave sisalana) were produced by slurry and dewatering techniques, with an optional addition of polypropylene fibers. Nonasbestos tiles were evaluated and compared with commercially available asbestos-cement sheets and ceramic tiles (frequently chosen as roofing materials for animal housing). Thermal conductivity and thermal diffusivity of tiles were determined by the parallel hot-wire method, along with the evaluation of the downside surface temperature. Cement-based components reinforced with sisal pulp presented better thermal performance at room temperature (25ºC), while those reinforced with sisal pulp added by polypropylene fibers presented better thermal performance at 60ºC. Non-asbestos cement tiles provided more efficient protection against radiation than asbestos corrugated sheets. O telhado fornece a principal proteção contra a radiação solar direta em galpões para animais. Propriedades térmicas apropriadas dos materiais contribuem para o melhor conforto térmico no interior das construções. Telhas sem amianto reforçadas com polpa de celulose de sisal (Agave sisalana) e com adição opcional de fibras de polipropileno foram produzidas pela técnica de mistura e sucção do excesso de água. Telhas corrugadas de cimento amianto, telhas cerâmicas e telhas à base de cimento reforçadas com polpa de celulose (com ou sem adição de fibras sintéticas) foram comparadas quanto às suas propriedades térmicas. A condutividade térmica e a difusividade térmica foram determinadas pelo método do fio quente paralelo, assim como a temperatura da superfície inferior das telhas foi avaliada em diferentes períodos. Telhas de cimento reforçados com polpa de sisal apresentaram as melhores propriedades térmicas em temperatura ambiente (25ºC), enquanto aquelas reforçadas com polpa de sisal associada a fibras de polipropileno apresentaram melhor desempenho térmico a 60ºC. As telhas sem amianto forneceram proteção mais eficiente contra a radiação térmica do que as telhas corrugadas de amianto. Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz2011-02-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://www.revistas.usp.br/sa/article/view/2262810.1590/S0103-90162011000100001Scientia Agricola; v. 68 n. 1 (2011); 1-7Scientia Agricola; Vol. 68 Núm. 1 (2011); 1-7Scientia Agricola; Vol. 68 No. 1 (2011); 1-71678-992X0103-9016reponame:Scientia Agrícola (Online)instname:Universidade de São Paulo (USP)instacron:USPenghttps://www.revistas.usp.br/sa/article/view/22628/24652Copyright (c) 2015 Scientia Agricolainfo:eu-repo/semantics/openAccessTonoli, Gustavo Henrique DenzinSantos, Sérgio Francisco dosRabi, José AntonioSantos, Wilson Nunes dosSavastano Junior, Holmer2015-07-07T19:01:23Zoai:revistas.usp.br:article/22628Revistahttp://revistas.usp.br/sa/indexPUBhttps://old.scielo.br/oai/scielo-oai.phpscientia@usp.br||alleoni@usp.br1678-992X0103-9016opendoar:2015-07-07T19:01:23Scientia Agrícola (Online) - Universidade de São Paulo (USP)false
dc.title.none.fl_str_mv Thermal performance of sisal fiber-cement roofing tiles for rural constructions
Desempenho térmico de telhas de fibrocimento reforçadas com polpa de sisal para construções rurais
title Thermal performance of sisal fiber-cement roofing tiles for rural constructions
spellingShingle Thermal performance of sisal fiber-cement roofing tiles for rural constructions
Tonoli, Gustavo Henrique Denzin
cellulose pulp
polypropylene fiber
thermal comfort
parallel hot-wire method
thermal conductivity
polpa de celulose
fibras de polipropileno
conforto térmico
método do fio quente paralelo
condutividade térmica
title_short Thermal performance of sisal fiber-cement roofing tiles for rural constructions
title_full Thermal performance of sisal fiber-cement roofing tiles for rural constructions
title_fullStr Thermal performance of sisal fiber-cement roofing tiles for rural constructions
title_full_unstemmed Thermal performance of sisal fiber-cement roofing tiles for rural constructions
title_sort Thermal performance of sisal fiber-cement roofing tiles for rural constructions
author Tonoli, Gustavo Henrique Denzin
author_facet Tonoli, Gustavo Henrique Denzin
Santos, Sérgio Francisco dos
Rabi, José Antonio
Santos, Wilson Nunes dos
Savastano Junior, Holmer
author_role author
author2 Santos, Sérgio Francisco dos
Rabi, José Antonio
Santos, Wilson Nunes dos
Savastano Junior, Holmer
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Tonoli, Gustavo Henrique Denzin
Santos, Sérgio Francisco dos
Rabi, José Antonio
Santos, Wilson Nunes dos
Savastano Junior, Holmer
dc.subject.por.fl_str_mv cellulose pulp
polypropylene fiber
thermal comfort
parallel hot-wire method
thermal conductivity
polpa de celulose
fibras de polipropileno
conforto térmico
método do fio quente paralelo
condutividade térmica
topic cellulose pulp
polypropylene fiber
thermal comfort
parallel hot-wire method
thermal conductivity
polpa de celulose
fibras de polipropileno
conforto térmico
método do fio quente paralelo
condutividade térmica
description Roofing provides the main protection against direct solar radiation in animal housing. Appropriate thermal properties of roofing materials tend to improve the thermal comfort in the inner ambient. Nonasbestos fiber-cement roofing components reinforced with cellulose pulp from sisal (Agave sisalana) were produced by slurry and dewatering techniques, with an optional addition of polypropylene fibers. Nonasbestos tiles were evaluated and compared with commercially available asbestos-cement sheets and ceramic tiles (frequently chosen as roofing materials for animal housing). Thermal conductivity and thermal diffusivity of tiles were determined by the parallel hot-wire method, along with the evaluation of the downside surface temperature. Cement-based components reinforced with sisal pulp presented better thermal performance at room temperature (25ºC), while those reinforced with sisal pulp added by polypropylene fibers presented better thermal performance at 60ºC. Non-asbestos cement tiles provided more efficient protection against radiation than asbestos corrugated sheets.
publishDate 2011
dc.date.none.fl_str_mv 2011-02-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://www.revistas.usp.br/sa/article/view/22628
10.1590/S0103-90162011000100001
url https://www.revistas.usp.br/sa/article/view/22628
identifier_str_mv 10.1590/S0103-90162011000100001
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://www.revistas.usp.br/sa/article/view/22628/24652
dc.rights.driver.fl_str_mv Copyright (c) 2015 Scientia Agricola
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Copyright (c) 2015 Scientia Agricola
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz
publisher.none.fl_str_mv Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz
dc.source.none.fl_str_mv Scientia Agricola; v. 68 n. 1 (2011); 1-7
Scientia Agricola; Vol. 68 Núm. 1 (2011); 1-7
Scientia Agricola; Vol. 68 No. 1 (2011); 1-7
1678-992X
0103-9016
reponame:Scientia Agrícola (Online)
instname:Universidade de São Paulo (USP)
instacron:USP
instname_str Universidade de São Paulo (USP)
instacron_str USP
institution USP
reponame_str Scientia Agrícola (Online)
collection Scientia Agrícola (Online)
repository.name.fl_str_mv Scientia Agrícola (Online) - Universidade de São Paulo (USP)
repository.mail.fl_str_mv scientia@usp.br||alleoni@usp.br
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