Avaliação da qualidade de colagem de elementos de MLC confeccionados com madeiras de eucalipto e resina fenólica

• Autor(a) principal: Páschoa, Douglas Pontes [UNESP]
• Data de Publicação: 2018
• Tipo de documento: Trabalho de conclusão de curso
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://hdl.handle.net/11449/203726; http://www.athena.biblioteca.unesp.br/exlibris/bd/capelo/2020-01-20/000924466.pdf
• topic: Lâminas de madeira; Colagem; Resinas fenólicas; Cisalhamento; Eucalipto; Laminated wood

To increase the wood solutions, the country has adopted new construction techniques, which use wood by-products, among which can be cited Laminated Wood (MLC). The present work consisted in evaluating the proposed standard ABNT NBR PN 02: 126.10- 001-5, putting in practice the glued laminated wood elements with respect to the tests of shear strength and delamination of the glue line for wood of Eucalyptus, obtained by means of reforestation of the region of Itapeva-SP. In the mechanical characterization of the wood, they were subjected to compression tests parallel to the fibers, parallel shear to the fibers and static bending. The confection of glued laminated wood was accomplished through the application of the resorcinol formaldehyde resin to the glueing of the lamellae of wood. All of them were classified mechanically and visually. The tests were carried out, evaluating the quality of bonding of the resin to the wood. In the delamination of the glue line an autoclave was constructed, built specifically for this test. The other tests were performed in the universal test machine (EMIC) with a capacity of 300 kN, available at the Material Properties Laboratory of UNESP of Itapeva-SP. Glue bonding was not satisfactory, with maximum percentages of glue line delamination of 71.40 %. The average shear strength of the glue lines - considering the same MLC element - did not show significant differences between them