Análise do desempenho estrutural de vigas com perfil I em madeira colada, utilizando três diferentes tipos de adesivos

Detalhes bibliográficos
Autor(a) principal: Tomé, Karina Taiza
Data de Publicação: 2022
Tipo de documento: Dissertação
Idioma: por
Título da fonte: Biblioteca Digital de Teses e Dissertações do UNIOESTE
Texto Completo: https://tede.unioeste.br/handle/tede/6335
Resumo: Researches in several sectors has focused on replacing raw materials from fossil fuels with materials of natural and renewable origin. In this sense, studies focused on the use of timber in civil and agricultural construction have been encouraged and developed. Timber can be used as a definitive structure, examples of beams and pillars, or temporary structures, as in struts and forms. Still, the study of composite elements in timber has received significant attention from industries and researchers. Therefore, the present study aimed to produce and evaluate the structural performance of I-beams of glued laminated timber and made of Pinus sp. timber, with three different types of adhesives, namely: two-component vegetable oils-based adhesive. The timber characterization was carried out to obtain its physical and mechanical properties, as well as preliminary tests to define the gluing pressure and consumption for the use of PUR and epoxy adhesive. Through the results found in the tests and statistical analysis, it was defined that the PUR adhesive consumption would be 250 g/m² and bonding pressure of 0.7 MPa; for the epoxy adhesive, consumption of 300 g/m² and pressure of gluing of 1.0 MPa. For the vegetable oil-based adhesive, a consumption of 300 g/m² and a pressure of 0.8 MPa were used, based on studies already carried out. Twenty one beams were made with an upper flange of 8.3 cm and a lower flange of 5.2 cm in width and 2 cm in thickness and a web with 12 cm in height and 2 cm in thickness. A length of 2.50 m was adopted, with a free 2.30 m span between the supports. As for the strengths, the beams glued with vegetable oil-based adhesive had a higher average rupture load of 20.45 kN, while the beams glued with PUR reached 18.82 kN and the beams glued with epoxy adhesive had an average of 16.40 kN. As for stiffness, the structures reached the normative limits for total loads in the order of 3 kN for allowable deflection of L/350 and 5 kN for normative deflection of L/200. In addition, it was observed that the beams glued with castor oil had higher average stiffness when compared to the other adhesives. Regarding the theoretical displacements of these arrows, the beams showed higher values. As for the statistical analysis of the strengths and limit deflections, it was observed that there was no significant difference at the 5% level between the adhesives.
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spelling Petrauski, Alfredohttp://lattes.cnpq.br/3732959853266749Petrauski, Sandra Maria Ferreira Courihttp://lattes.cnpq.br/0075155683036465Dias, Gustavo Lacerdahttp://lattes.cnpq.br/6483551527340540Azevedo, Gustavo Lessahttp://lattes.cnpq.br/4428433623535367Tomé, Karina Taiza2022-12-08T12:59:51Z2022-08-19Tomé, Karina Taiza. Análise do desempenho estrutural de vigas com perfil I em madeira colada, utilizando três diferentes tipos de adesivos. 2022. 122 f. Dissertação( Mestrado em Engenharia de Energia na Agricultura) - Universidade Estadual do Oeste do Paraná, Cascavel.https://tede.unioeste.br/handle/tede/6335Researches in several sectors has focused on replacing raw materials from fossil fuels with materials of natural and renewable origin. In this sense, studies focused on the use of timber in civil and agricultural construction have been encouraged and developed. Timber can be used as a definitive structure, examples of beams and pillars, or temporary structures, as in struts and forms. Still, the study of composite elements in timber has received significant attention from industries and researchers. Therefore, the present study aimed to produce and evaluate the structural performance of I-beams of glued laminated timber and made of Pinus sp. timber, with three different types of adhesives, namely: two-component vegetable oils-based adhesive. The timber characterization was carried out to obtain its physical and mechanical properties, as well as preliminary tests to define the gluing pressure and consumption for the use of PUR and epoxy adhesive. Through the results found in the tests and statistical analysis, it was defined that the PUR adhesive consumption would be 250 g/m² and bonding pressure of 0.7 MPa; for the epoxy adhesive, consumption of 300 g/m² and pressure of gluing of 1.0 MPa. For the vegetable oil-based adhesive, a consumption of 300 g/m² and a pressure of 0.8 MPa were used, based on studies already carried out. Twenty one beams were made with an upper flange of 8.3 cm and a lower flange of 5.2 cm in width and 2 cm in thickness and a web with 12 cm in height and 2 cm in thickness. A length of 2.50 m was adopted, with a free 2.30 m span between the supports. As for the strengths, the beams glued with vegetable oil-based adhesive had a higher average rupture load of 20.45 kN, while the beams glued with PUR reached 18.82 kN and the beams glued with epoxy adhesive had an average of 16.40 kN. As for stiffness, the structures reached the normative limits for total loads in the order of 3 kN for allowable deflection of L/350 and 5 kN for normative deflection of L/200. In addition, it was observed that the beams glued with castor oil had higher average stiffness when compared to the other adhesives. Regarding the theoretical displacements of these arrows, the beams showed higher values. As for the statistical analysis of the strengths and limit deflections, it was observed that there was no significant difference at the 5% level between the adhesives.Pesquisas em diversos setores têm focado na substituição das matérias primas oriundas de combustíveis fósseis por materiais de origem natural e renovável. Nesse sentido, estudos voltados para o uso da madeira na construção civil e agrícola têm sido incentivados e desenvolvidos. A madeira pode ser utilizada como estrutura definitiva, a exemplos de vigas e pilares, ou estruturas temporárias, como em escoras e formas. Ainda, o estudo de elementos compostos em madeira tem recebido significativa atenção de indústrias e pesquisadores. Sendo assim, o presente estudo teve como objetivo produzir e avaliar o desempenho estrutural de vigas com perfil em I de madeira laminada colada utilizando madeira de Pinus sp., com três diferentes tipos de adesivos, sendo eles: adesivo bicomponente à base de óleos vegetais, adesivo monocomponente à base de poliuretano e adesivo à base de resina epóxi. Foi realizada a caracterização da madeira para obter suas propriedades físicas e mecânicas, bem como ensaios preliminares para definir a pressão de colagem e consumo para a utilização do adesivo PUR e epóxi. Por meio dos resultados obtidos nos ensaios e análise estatística, definiu-se que o consumo do adesivo PUR seria de 250 g/m² e pressão de colagem de 0,7 MPa, e para o adesivo epóxi, consumo de 300 g/m² e pressão de colagem de 1,0 MPa. Para o adesivo à base de óleos vegetais utilizou-se consumo de 300 g/m² e pressão de 0,8 MPa, com base em estudos já realizados. Confeccionou-se 21 vigas com mesa superior de 8,3 cm e mesa inferior de 5,2 cm de largura e 2 cm de espessura e alma com 12 cm de altura e 2 cm de espessura. Adotou-se comprimento de 2,50 m, com vão livre entre os apoios de 2,30 m. Quanto às resistências, as vigas coladas com adesivo à base de óleos vegetais obtiveram uma maior carga média de ruptura, sendo de 20,45 kN, enquanto as vigas coladas com PUR alcançaram 18,82 kN, e as vigas coladas com adesivo epóxi tiveram média de 16,40 kN. Quanto à rigidez, as estruturas atingiram os limites normativos para carregamentos totais na ordem de 3 kN para flecha admissível de L/350, e 5 kN para flecha normativa de L/200. Além disso, observou-se que as vigas coladas com adesivo de mamona apresentaram maior rigidez média quando comparadas aos demais adesivos. Com relação aos deslocamentos teóricos destas flechas, as vigas exibiram valores maiores. Quanto à análise estatística das resistências e flechas limites, observou-se que não houve diferença significativa ao nível de 5% entre os adesivos.Submitted by Edineia Teixeira (edineia.teixeira@unioeste.br) on 2022-12-08T12:59:51Z No. of bitstreams: 2 Karina_Tomé.2022.pdf: 3830681 bytes, checksum: 2141e43751717eabe9e0f61f78769f46 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5)Made available in DSpace on 2022-12-08T12:59:51Z (GMT). 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dc.title.por.fl_str_mv Análise do desempenho estrutural de vigas com perfil I em madeira colada, utilizando três diferentes tipos de adesivos
dc.title.alternative.eng.fl_str_mv Analysis of I profile beams in glued wood, using three different types of adhesives
title Análise do desempenho estrutural de vigas com perfil I em madeira colada, utilizando três diferentes tipos de adesivos
spellingShingle Análise do desempenho estrutural de vigas com perfil I em madeira colada, utilizando três diferentes tipos de adesivos
Tomé, Karina Taiza
Desempenho estrutural
Adesivos poliuretanos
Adesivo epóxi
Structural performance
Polyurethane adhesives
Epoxy adhesive
AGROENERCIA
title_short Análise do desempenho estrutural de vigas com perfil I em madeira colada, utilizando três diferentes tipos de adesivos
title_full Análise do desempenho estrutural de vigas com perfil I em madeira colada, utilizando três diferentes tipos de adesivos
title_fullStr Análise do desempenho estrutural de vigas com perfil I em madeira colada, utilizando três diferentes tipos de adesivos
title_full_unstemmed Análise do desempenho estrutural de vigas com perfil I em madeira colada, utilizando três diferentes tipos de adesivos
title_sort Análise do desempenho estrutural de vigas com perfil I em madeira colada, utilizando três diferentes tipos de adesivos
author Tomé, Karina Taiza
author_facet Tomé, Karina Taiza
author_role author
dc.contributor.advisor1.fl_str_mv Petrauski, Alfredo
dc.contributor.advisor1Lattes.fl_str_mv http://lattes.cnpq.br/3732959853266749
dc.contributor.referee1.fl_str_mv Petrauski, Sandra Maria Ferreira Couri
dc.contributor.referee1Lattes.fl_str_mv http://lattes.cnpq.br/0075155683036465
dc.contributor.referee2.fl_str_mv Dias, Gustavo Lacerda
dc.contributor.referee2Lattes.fl_str_mv http://lattes.cnpq.br/6483551527340540
dc.contributor.referee3.fl_str_mv Azevedo, Gustavo Lessa
dc.contributor.authorLattes.fl_str_mv http://lattes.cnpq.br/4428433623535367
dc.contributor.author.fl_str_mv Tomé, Karina Taiza
contributor_str_mv Petrauski, Alfredo
Petrauski, Sandra Maria Ferreira Couri
Dias, Gustavo Lacerda
Azevedo, Gustavo Lessa
dc.subject.por.fl_str_mv Desempenho estrutural
Adesivos poliuretanos
Adesivo epóxi
topic Desempenho estrutural
Adesivos poliuretanos
Adesivo epóxi
Structural performance
Polyurethane adhesives
Epoxy adhesive
AGROENERCIA
dc.subject.eng.fl_str_mv Structural performance
Polyurethane adhesives
Epoxy adhesive
dc.subject.cnpq.fl_str_mv AGROENERCIA
description Researches in several sectors has focused on replacing raw materials from fossil fuels with materials of natural and renewable origin. In this sense, studies focused on the use of timber in civil and agricultural construction have been encouraged and developed. Timber can be used as a definitive structure, examples of beams and pillars, or temporary structures, as in struts and forms. Still, the study of composite elements in timber has received significant attention from industries and researchers. Therefore, the present study aimed to produce and evaluate the structural performance of I-beams of glued laminated timber and made of Pinus sp. timber, with three different types of adhesives, namely: two-component vegetable oils-based adhesive. The timber characterization was carried out to obtain its physical and mechanical properties, as well as preliminary tests to define the gluing pressure and consumption for the use of PUR and epoxy adhesive. Through the results found in the tests and statistical analysis, it was defined that the PUR adhesive consumption would be 250 g/m² and bonding pressure of 0.7 MPa; for the epoxy adhesive, consumption of 300 g/m² and pressure of gluing of 1.0 MPa. For the vegetable oil-based adhesive, a consumption of 300 g/m² and a pressure of 0.8 MPa were used, based on studies already carried out. Twenty one beams were made with an upper flange of 8.3 cm and a lower flange of 5.2 cm in width and 2 cm in thickness and a web with 12 cm in height and 2 cm in thickness. A length of 2.50 m was adopted, with a free 2.30 m span between the supports. As for the strengths, the beams glued with vegetable oil-based adhesive had a higher average rupture load of 20.45 kN, while the beams glued with PUR reached 18.82 kN and the beams glued with epoxy adhesive had an average of 16.40 kN. As for stiffness, the structures reached the normative limits for total loads in the order of 3 kN for allowable deflection of L/350 and 5 kN for normative deflection of L/200. In addition, it was observed that the beams glued with castor oil had higher average stiffness when compared to the other adhesives. Regarding the theoretical displacements of these arrows, the beams showed higher values. As for the statistical analysis of the strengths and limit deflections, it was observed that there was no significant difference at the 5% level between the adhesives.
publishDate 2022
dc.date.accessioned.fl_str_mv 2022-12-08T12:59:51Z
dc.date.issued.fl_str_mv 2022-08-19
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dc.identifier.citation.fl_str_mv Tomé, Karina Taiza. Análise do desempenho estrutural de vigas com perfil I em madeira colada, utilizando três diferentes tipos de adesivos. 2022. 122 f. Dissertação( Mestrado em Engenharia de Energia na Agricultura) - Universidade Estadual do Oeste do Paraná, Cascavel.
dc.identifier.uri.fl_str_mv https://tede.unioeste.br/handle/tede/6335
identifier_str_mv Tomé, Karina Taiza. Análise do desempenho estrutural de vigas com perfil I em madeira colada, utilizando três diferentes tipos de adesivos. 2022. 122 f. Dissertação( Mestrado em Engenharia de Energia na Agricultura) - Universidade Estadual do Oeste do Paraná, Cascavel.
url https://tede.unioeste.br/handle/tede/6335
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language por
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dc.publisher.none.fl_str_mv Universidade Estadual do Oeste do Paraná
Cascavel
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dc.publisher.initials.fl_str_mv UNIOESTE
dc.publisher.country.fl_str_mv Brasil
dc.publisher.department.fl_str_mv Centro de Ciências Exatas e Tecnológicas
publisher.none.fl_str_mv Universidade Estadual do Oeste do Paraná
Cascavel
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repository.name.fl_str_mv Biblioteca Digital de Teses e Dissertações do UNIOESTE - Universidade Estadual do Oeste do Paraná (UNIOESTE)
repository.mail.fl_str_mv biblioteca.repositorio@unioeste.br
_version_ 1811723464045756416