Thermal performance of sisal fiber-cement roofing tiles for rural constructions
Autor(a) principal: | |
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Data de Publicação: | 2011 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFLA |
Texto Completo: | http://repositorio.ufla.br/jspui/handle/1/37585 |
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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Thermal performance of sisal fiber-cement roofing tiles for rural constructionsDesempenho térmico de telhas de fibrocimento reforçadas com polpa de sisal para construções ruraisCellulose pulpPolypropylene fiberThermal comfortParallel hot-wire methodThermal conductivityPolpa de celuloseFibras de polipropilenoConforto térmicoMétodo do fio quente paraleloCondutividade térmicaRoofing 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.Escola Superior de Agricultura "Luiz de Queiroz"2019-11-08T13:56:44Z2019-11-08T13:56:44Z2011info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfTONOLI, G. H. D. et al. Thermal performance of sisal fiber-cement roofing tiles for rural constructions. Scientia Agricola, Piracicaba, v. 68, n. 1, p. 1-7, Jan./Feb. 2011.http://repositorio.ufla.br/jspui/handle/1/37585Scientia Agricolareponame:Repositório Institucional da UFLAinstname:Universidade Federal de Lavras (UFLA)instacron:UFLAAttribution-NonCommercial 4.0 Internationalhttp://creativecommons.org/licenses/by-nc/4.0/info:eu-repo/semantics/openAccessTonoli, Gustavo Henrique DenzinSantos, Sérgio Francisco dosRabi, José AntonioSantos, Wilson Nunes dosSavastano Junior, Holmereng2019-11-08T13:57:16Zoai:localhost:1/37585Repositório InstitucionalPUBhttp://repositorio.ufla.br/oai/requestnivaldo@ufla.br || repositorio.biblioteca@ufla.bropendoar:2019-11-08T13:57:16Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)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 2019-11-08T13:56:44Z 2019-11-08T13:56:44Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
TONOLI, G. H. D. et al. Thermal performance of sisal fiber-cement roofing tiles for rural constructions. Scientia Agricola, Piracicaba, v. 68, n. 1, p. 1-7, Jan./Feb. 2011. http://repositorio.ufla.br/jspui/handle/1/37585 |
identifier_str_mv |
TONOLI, G. H. D. et al. Thermal performance of sisal fiber-cement roofing tiles for rural constructions. Scientia Agricola, Piracicaba, v. 68, n. 1, p. 1-7, Jan./Feb. 2011. |
url |
http://repositorio.ufla.br/jspui/handle/1/37585 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
Attribution-NonCommercial 4.0 International http://creativecommons.org/licenses/by-nc/4.0/ info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Attribution-NonCommercial 4.0 International http://creativecommons.org/licenses/by-nc/4.0/ |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Escola Superior de Agricultura "Luiz de Queiroz" |
publisher.none.fl_str_mv |
Escola Superior de Agricultura "Luiz de Queiroz" |
dc.source.none.fl_str_mv |
Scientia Agricola reponame:Repositório Institucional da UFLA instname:Universidade Federal de Lavras (UFLA) instacron:UFLA |
instname_str |
Universidade Federal de Lavras (UFLA) |
instacron_str |
UFLA |
institution |
UFLA |
reponame_str |
Repositório Institucional da UFLA |
collection |
Repositório Institucional da UFLA |
repository.name.fl_str_mv |
Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA) |
repository.mail.fl_str_mv |
nivaldo@ufla.br || repositorio.biblioteca@ufla.br |
_version_ |
1807835210046242816 |