PHYSICAL AND MECHANICAL PROPERTIES OF LAMINATED VENEER LUMBER REINFORCED GFRP
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Ciência Florestal (Online) |
Texto Completo: | https://periodicos.ufsm.br/cienciaflorestal/article/view/19676 |
Resumo: | The aim of the present research was to evaluate the physical and mechanical properties of LVL reinforced with GFRP with two types of resines. At first, LVL panels were manufactured with nine layers of wood veneer glued with phenol-formaldehyde resin. After, they were reinforced with LVL with fiberglass and epoxy resin or with isophthalic resin. The treatments consisted on the aplication of one, two and four reinforced layers. The properties tested were density, moisture content, static bending in flatwise and edgewise position, modulus of elasticity (MOE) and modulus of rupture (MOR), glue line shear strength by compression loading. The epoxy and the isophthalic resin showed the same mechanical qualities among different treatments. MOE panel in flatwise position was influenced by one reinforcement layer and MOR was influenced by two reinforcement layers. In the edgewise position, MOE and MOR values remained stable among the treatments with two fiberglass reinforcement layers. The epoxy resin presented higher glue line resistance and higher percentage of wood failure. Isophthalic and phenolic resin presented similar values of glue line strength. However, the isophthalic resin had lower percentage of wood failure. Thus, the reinforcement with one layer of fiberglass with epoxy resin on the tensile side would be enough to boost the mechanical qualities of LVL. |
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PHYSICAL AND MECHANICAL PROPERTIES OF LAMINATED VENEER LUMBER REINFORCED GFRPPROPRIEDADES FÍSICO-MECÂNICAS DE PAINÉIS DE LÂMINAS PARALELAS REFORÇADOS COM PRFVLVLfiberglassepoxy resinisophthalic resin.LVLfibra de vidroresina epóxiresina isoftálica.The aim of the present research was to evaluate the physical and mechanical properties of LVL reinforced with GFRP with two types of resines. At first, LVL panels were manufactured with nine layers of wood veneer glued with phenol-formaldehyde resin. After, they were reinforced with LVL with fiberglass and epoxy resin or with isophthalic resin. The treatments consisted on the aplication of one, two and four reinforced layers. The properties tested were density, moisture content, static bending in flatwise and edgewise position, modulus of elasticity (MOE) and modulus of rupture (MOR), glue line shear strength by compression loading. The epoxy and the isophthalic resin showed the same mechanical qualities among different treatments. MOE panel in flatwise position was influenced by one reinforcement layer and MOR was influenced by two reinforcement layers. In the edgewise position, MOE and MOR values remained stable among the treatments with two fiberglass reinforcement layers. The epoxy resin presented higher glue line resistance and higher percentage of wood failure. Isophthalic and phenolic resin presented similar values of glue line strength. However, the isophthalic resin had lower percentage of wood failure. Thus, the reinforcement with one layer of fiberglass with epoxy resin on the tensile side would be enough to boost the mechanical qualities of LVL.http://dx.doi.org/10.5902/1980509819676O objetivo desta pesquisa foi avaliar as propriedades físico-mecânicas de painéis de lâminas paralelas (LVL) com camadas de Polímeros Reforçados de Fibra de Vidro (PRFV) impregnadas com dois tipos de matrizes. Primeiramente foi realizada a fabricação dos painéis LVL com nove camadas de lâminas de madeira unidas com resina à base de fenol-formaldeído na gramatura de 190 g/m2 em linha simples. Posteriormente, foi feita a aplicação do reforço de fibra de vidro impregnado com resinas epóxi ou poliéster isoftálica com NPG. Os tratamentos consistiram na aplicação de uma a quatro camadas de fibra de vidro impregnadas com resina epóxi ou isoftálica, totalizando 21 painéis. As propriedades avaliadas foram a massa específica, o teor de umidade, a flexão estática na posição flatwise e egdewise e a resistência ao cisalhamento na linha de cola. Em flexão estática na posição flatwise, uma camada de PRFV, em tratamentos com resina epóxi e isoftálica, foi suficiente para influenciar o módulo de elasticidade (MOE), enquanto para o módulo de ruptura (MOR), duas camadas de PRFV foram necessárias para tratamentos com resina isoftálica e uma camada para tratamentos com resina epóxi. Na posição edgewise, os valores de MOE e do MOR se mantiveram estáveis após a aplicação de duas camadas de PRFV. A resina epóxi apresentou maior resistência ao cisalhamento e maior percentual de falhas na madeira, enquanto a resina isoftálica, apesar de apresentar valores de resistência similares à fenólica, não apresentou boa adesão à madeira, representada pelo baixo percentual de falhas na madeira. Portanto, a aplicação de uma camada de PRFV com resina epóxi na posição de tração seria o suficiente para melhorar as qualidades mecânicas (flexão estática e cisalhamento) dos painéis LVL fabricados com lâminas de madeira de pinus unidas com fenol-formaldeído.Universidade Federal de Santa Maria2015-09-30info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://periodicos.ufsm.br/cienciaflorestal/article/view/1967610.5902/1980509819676Ciência Florestal; Vol. 25 No. 3 (2015); 731-741Ciência Florestal; v. 25 n. 3 (2015); 731-7411980-50980103-9954reponame:Ciência Florestal (Online)instname:Universidade Federal de Santa Maria (UFSM)instacron:UFSMporhttps://periodicos.ufsm.br/cienciaflorestal/article/view/19676/11683Buligon, Ediane AndréiaHaselein, Clovis RobertoGatto, Darci AlbertoSantini, Elio JoséRauber, RenataBerger, Camilainfo:eu-repo/semantics/openAccess2017-04-10T18:32:47Zoai:ojs.pkp.sfu.ca:article/19676Revistahttp://www.ufsm.br/cienciaflorestal/ONGhttps://old.scielo.br/oai/scielo-oai.php||cienciaflorestal@ufsm.br|| cienciaflorestal@gmail.com|| cf@smail.ufsm.br1980-50980103-9954opendoar:2017-04-10T18:32:47Ciência Florestal (Online) - Universidade Federal de Santa Maria (UFSM)false |
dc.title.none.fl_str_mv |
PHYSICAL AND MECHANICAL PROPERTIES OF LAMINATED VENEER LUMBER REINFORCED GFRP PROPRIEDADES FÍSICO-MECÂNICAS DE PAINÉIS DE LÂMINAS PARALELAS REFORÇADOS COM PRFV |
title |
PHYSICAL AND MECHANICAL PROPERTIES OF LAMINATED VENEER LUMBER REINFORCED GFRP |
spellingShingle |
PHYSICAL AND MECHANICAL PROPERTIES OF LAMINATED VENEER LUMBER REINFORCED GFRP Buligon, Ediane Andréia LVL fiberglass epoxy resin isophthalic resin. LVL fibra de vidro resina epóxi resina isoftálica. |
title_short |
PHYSICAL AND MECHANICAL PROPERTIES OF LAMINATED VENEER LUMBER REINFORCED GFRP |
title_full |
PHYSICAL AND MECHANICAL PROPERTIES OF LAMINATED VENEER LUMBER REINFORCED GFRP |
title_fullStr |
PHYSICAL AND MECHANICAL PROPERTIES OF LAMINATED VENEER LUMBER REINFORCED GFRP |
title_full_unstemmed |
PHYSICAL AND MECHANICAL PROPERTIES OF LAMINATED VENEER LUMBER REINFORCED GFRP |
title_sort |
PHYSICAL AND MECHANICAL PROPERTIES OF LAMINATED VENEER LUMBER REINFORCED GFRP |
author |
Buligon, Ediane Andréia |
author_facet |
Buligon, Ediane Andréia Haselein, Clovis Roberto Gatto, Darci Alberto Santini, Elio José Rauber, Renata Berger, Camila |
author_role |
author |
author2 |
Haselein, Clovis Roberto Gatto, Darci Alberto Santini, Elio José Rauber, Renata Berger, Camila |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Buligon, Ediane Andréia Haselein, Clovis Roberto Gatto, Darci Alberto Santini, Elio José Rauber, Renata Berger, Camila |
dc.subject.por.fl_str_mv |
LVL fiberglass epoxy resin isophthalic resin. LVL fibra de vidro resina epóxi resina isoftálica. |
topic |
LVL fiberglass epoxy resin isophthalic resin. LVL fibra de vidro resina epóxi resina isoftálica. |
description |
The aim of the present research was to evaluate the physical and mechanical properties of LVL reinforced with GFRP with two types of resines. At first, LVL panels were manufactured with nine layers of wood veneer glued with phenol-formaldehyde resin. After, they were reinforced with LVL with fiberglass and epoxy resin or with isophthalic resin. The treatments consisted on the aplication of one, two and four reinforced layers. The properties tested were density, moisture content, static bending in flatwise and edgewise position, modulus of elasticity (MOE) and modulus of rupture (MOR), glue line shear strength by compression loading. The epoxy and the isophthalic resin showed the same mechanical qualities among different treatments. MOE panel in flatwise position was influenced by one reinforcement layer and MOR was influenced by two reinforcement layers. In the edgewise position, MOE and MOR values remained stable among the treatments with two fiberglass reinforcement layers. The epoxy resin presented higher glue line resistance and higher percentage of wood failure. Isophthalic and phenolic resin presented similar values of glue line strength. However, the isophthalic resin had lower percentage of wood failure. Thus, the reinforcement with one layer of fiberglass with epoxy resin on the tensile side would be enough to boost the mechanical qualities of LVL. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-09-30 |
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://periodicos.ufsm.br/cienciaflorestal/article/view/19676 10.5902/1980509819676 |
url |
https://periodicos.ufsm.br/cienciaflorestal/article/view/19676 |
identifier_str_mv |
10.5902/1980509819676 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://periodicos.ufsm.br/cienciaflorestal/article/view/19676/11683 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Federal de Santa Maria |
publisher.none.fl_str_mv |
Universidade Federal de Santa Maria |
dc.source.none.fl_str_mv |
Ciência Florestal; Vol. 25 No. 3 (2015); 731-741 Ciência Florestal; v. 25 n. 3 (2015); 731-741 1980-5098 0103-9954 reponame:Ciência Florestal (Online) instname:Universidade Federal de Santa Maria (UFSM) instacron:UFSM |
instname_str |
Universidade Federal de Santa Maria (UFSM) |
instacron_str |
UFSM |
institution |
UFSM |
reponame_str |
Ciência Florestal (Online) |
collection |
Ciência Florestal (Online) |
repository.name.fl_str_mv |
Ciência Florestal (Online) - Universidade Federal de Santa Maria (UFSM) |
repository.mail.fl_str_mv |
||cienciaflorestal@ufsm.br|| cienciaflorestal@gmail.com|| cf@smail.ufsm.br |
_version_ |
1799944130417131520 |