Physical and mechanical behavior of glulam beams produced with rubberwood treated with preservatives

Detalhes bibliográficos
Autor(a) principal: Faria, Douglas Lamounier
Data de Publicação: 2020
Outros Autores: Cruz, Thiago Moreira, Dias, Matheus Cordazzo, Duarte, Paulo Junio, Mendes, Lourival Marin, Guimarães Junior, José Benedito
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFLA
Texto Completo: http://repositorio.ufla.br/jspui/handle/1/48063
Resumo: This work aimed to evaluate the physical and mechanical behavior of glued laminated timber (GLT) - glulam pieces of Hevea brasiliensis treated with chromed copper arsenate (CCA), chromed copper borate (CCB) and pyrethroid in the production of GLT. The pieces were produced using three wooden laminae with dimensions of 60 x 20 x 1200 mm, (width x thickness x length), joined with epoxy adhesive under 1.0 MPa pressure for 24h at room temperature. The rubberwood had an apparent density of 0.624 g cm-3, a value close to that of Eucalyptus grandis wood, a species traditionally used in the manufacture of GLT. Regarding the GLT parts, it was observed that the preservative treatment with CCA and CCB influenced negatively the values ​​of the mechanical properties. For resistance modulus (MOR), a reduction of 75.44 MPa to 62.36 and 58.57 MPa was found for the parts untreated and treated with CCA and CCB, respectively. There was no statistical difference for surface treatment with pyrethroid. The photomicrographs of the glue line showed that the reduction in these values ​​was mainly due to the penetration of preservative solutions into the wood structure (cell lumens and vessels or pores), impairing the anchoring of the adhesive.
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spelling Physical and mechanical behavior of glulam beams produced with rubberwood treated with preservativesComportamento físico e mecânico de vigas laminadas coladas produzidas com madeira de seringueira tratada com preservativosAdhesive wood bondingStatic bendingDelaminationPreservative treatmentLigação madeira adesivoFlexão estáticaDelaminaçãoTratamento preservativoThis work aimed to evaluate the physical and mechanical behavior of glued laminated timber (GLT) - glulam pieces of Hevea brasiliensis treated with chromed copper arsenate (CCA), chromed copper borate (CCB) and pyrethroid in the production of GLT. The pieces were produced using three wooden laminae with dimensions of 60 x 20 x 1200 mm, (width x thickness x length), joined with epoxy adhesive under 1.0 MPa pressure for 24h at room temperature. The rubberwood had an apparent density of 0.624 g cm-3, a value close to that of Eucalyptus grandis wood, a species traditionally used in the manufacture of GLT. Regarding the GLT parts, it was observed that the preservative treatment with CCA and CCB influenced negatively the values ​​of the mechanical properties. For resistance modulus (MOR), a reduction of 75.44 MPa to 62.36 and 58.57 MPa was found for the parts untreated and treated with CCA and CCB, respectively. There was no statistical difference for surface treatment with pyrethroid. The photomicrographs of the glue line showed that the reduction in these values ​​was mainly due to the penetration of preservative solutions into the wood structure (cell lumens and vessels or pores), impairing the anchoring of the adhesive.Esse trabalho teve por objetivo avaliar o comportamento físico e mecânico de madeira laminada colada (MLC) de Hevea brasiliensis tratada com arseniato de cobre cromatado (CCA), borato de cobre cromatado (CCB) e piretróide na produção de MLC. As peças foram produzidas com três lâminas com dimensões de 60 x 20 x 1200 mm (largura x espessura x comprimento), unidas com adesivo epóxi sob 1,0 MPa de pressão durante 24h à temperatura ambiente. A madeira de seringueira tinha densidade aparente de 0,624 g cm-3, valor próximo ao da madeira de Eucalyptus grandis, espécie utilizada tradicionalmente na fabricação de MLC. Em relação às peças de MLC, observou-se que o tratamento preservativo com CCA e CCB influenciou nos valores das propriedades mecânicas. Para o módulo de ruptura (MOR), foi verificado redução de 75,44 MPa para 62,36 e 58,57 MPa para as peças sem tratamento e tratadas com CCA e CCB, respectivamente. Já para o tratamento superficial com piretróide não houve diferenças estatísticas. As fotomicrografias da linha de cola mostraram que a redução desses valores ocorreu sobretudo pela penetração das soluções preservativas na estrutura da madeira (lume celular, vasos ou poros), prejudicando a ancoragem do adesivo.Universidade Federal de Lavras2021-09-06T19:34:37Z2021-09-06T19:34:37Z2020-11info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfFARIA, D. L. et al. Physical and mechanical behavior of glulam beams produced with rubberwood treated with preservatives. Ciência e Agrotecnologia, Lavras, v. 44, e012020, 2020. DOI: http://dx.doi.org/10.1590/1413-7054202044012020.http://repositorio.ufla.br/jspui/handle/1/48063Ciência e Agrotecnologiareponame:Repositório Institucional da UFLAinstname:Universidade Federal de Lavras (UFLA)instacron:UFLAhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessFaria, Douglas LamounierCruz, Thiago MoreiraDias, Matheus CordazzoDuarte, Paulo JunioMendes, Lourival MarinGuimarães Junior, José Beneditoeng2021-09-06T19:34:53Zoai:localhost:1/48063Repositório InstitucionalPUBhttp://repositorio.ufla.br/oai/requestnivaldo@ufla.br || repositorio.biblioteca@ufla.bropendoar:2021-09-06T19:34:53Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)false
dc.title.none.fl_str_mv Physical and mechanical behavior of glulam beams produced with rubberwood treated with preservatives
Comportamento físico e mecânico de vigas laminadas coladas produzidas com madeira de seringueira tratada com preservativos
title Physical and mechanical behavior of glulam beams produced with rubberwood treated with preservatives
spellingShingle Physical and mechanical behavior of glulam beams produced with rubberwood treated with preservatives
Faria, Douglas Lamounier
Adhesive wood bonding
Static bending
Delamination
Preservative treatment
Ligação madeira adesivo
Flexão estática
Delaminação
Tratamento preservativo
title_short Physical and mechanical behavior of glulam beams produced with rubberwood treated with preservatives
title_full Physical and mechanical behavior of glulam beams produced with rubberwood treated with preservatives
title_fullStr Physical and mechanical behavior of glulam beams produced with rubberwood treated with preservatives
title_full_unstemmed Physical and mechanical behavior of glulam beams produced with rubberwood treated with preservatives
title_sort Physical and mechanical behavior of glulam beams produced with rubberwood treated with preservatives
author Faria, Douglas Lamounier
author_facet Faria, Douglas Lamounier
Cruz, Thiago Moreira
Dias, Matheus Cordazzo
Duarte, Paulo Junio
Mendes, Lourival Marin
Guimarães Junior, José Benedito
author_role author
author2 Cruz, Thiago Moreira
Dias, Matheus Cordazzo
Duarte, Paulo Junio
Mendes, Lourival Marin
Guimarães Junior, José Benedito
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Faria, Douglas Lamounier
Cruz, Thiago Moreira
Dias, Matheus Cordazzo
Duarte, Paulo Junio
Mendes, Lourival Marin
Guimarães Junior, José Benedito
dc.subject.por.fl_str_mv Adhesive wood bonding
Static bending
Delamination
Preservative treatment
Ligação madeira adesivo
Flexão estática
Delaminação
Tratamento preservativo
topic Adhesive wood bonding
Static bending
Delamination
Preservative treatment
Ligação madeira adesivo
Flexão estática
Delaminação
Tratamento preservativo
description This work aimed to evaluate the physical and mechanical behavior of glued laminated timber (GLT) - glulam pieces of Hevea brasiliensis treated with chromed copper arsenate (CCA), chromed copper borate (CCB) and pyrethroid in the production of GLT. The pieces were produced using three wooden laminae with dimensions of 60 x 20 x 1200 mm, (width x thickness x length), joined with epoxy adhesive under 1.0 MPa pressure for 24h at room temperature. The rubberwood had an apparent density of 0.624 g cm-3, a value close to that of Eucalyptus grandis wood, a species traditionally used in the manufacture of GLT. Regarding the GLT parts, it was observed that the preservative treatment with CCA and CCB influenced negatively the values ​​of the mechanical properties. For resistance modulus (MOR), a reduction of 75.44 MPa to 62.36 and 58.57 MPa was found for the parts untreated and treated with CCA and CCB, respectively. There was no statistical difference for surface treatment with pyrethroid. The photomicrographs of the glue line showed that the reduction in these values ​​was mainly due to the penetration of preservative solutions into the wood structure (cell lumens and vessels or pores), impairing the anchoring of the adhesive.
publishDate 2020
dc.date.none.fl_str_mv 2020-11
2021-09-06T19:34:37Z
2021-09-06T19:34:37Z
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 FARIA, D. L. et al. Physical and mechanical behavior of glulam beams produced with rubberwood treated with preservatives. Ciência e Agrotecnologia, Lavras, v. 44, e012020, 2020. DOI: http://dx.doi.org/10.1590/1413-7054202044012020.
http://repositorio.ufla.br/jspui/handle/1/48063
identifier_str_mv FARIA, D. L. et al. Physical and mechanical behavior of glulam beams produced with rubberwood treated with preservatives. Ciência e Agrotecnologia, Lavras, v. 44, e012020, 2020. DOI: http://dx.doi.org/10.1590/1413-7054202044012020.
url http://repositorio.ufla.br/jspui/handle/1/48063
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv http://creativecommons.org/licenses/by/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidade Federal de Lavras
publisher.none.fl_str_mv Universidade Federal de Lavras
dc.source.none.fl_str_mv Ciência e Agrotecnologia
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
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