• JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
 
  Bookmark and Share
 
 
Master's Dissertation
DOI
10.11606/D.18.2018.tde-18052018-210830
Document
Author
Full name
Alcebíades Negrão Macêdo
Institute/School/College
Knowledge Area
Date of Defense
Published
São Carlos, 1996
Supervisor
Committee
Calil Junior, Carlito (President)
Ballarin, Adriano Wagner
Malite, Maximiliano
Title in Portuguese
Estudo de emendas dentadas em Madeira Laminada Colada (MLC): avaliação de método de ensaio
Keywords in Portuguese
Emendas dentadas
Madeira laminada colada
Abstract in Portuguese
Este trabalho consiste no estudo teórico e experimental das emendas dentadas em madeira laminada colada (MLC), cujo objetivo principal é avaliar o método proposto no Projeto da Nova Norma Brasileira PNBR 7190 (1996) para a caracterização da MLC, com ênfase às emendas dentadas. As espécies de madeira estudadas foram o Pinus elliottii e o Eucalipto grandis e o adesivo utilizado foi o CASCOPHEN RS-216, à base de resorcinol, produzido pela Alba Química Indústria e Comércio Ltda. A emenda dentada usada no estudo foi a correspondente ao comprimento de 20 mm da DIN 68140, geometria esta adotada pelo parque produtor de MLC no país. Nos ensaios são avaliadas as resistências ao cisalhamento na lâmina de cola, a tração normal à lâmina de cola e a resistência a tração das emendas dentadas. O desempenho das ligações foi avaliado em função da relação entre os valores obtidos nos ensaios com madeira colada e madeira maciça, bem como pelo modo de ruptura dos mesmos. Como conclusão obteve-se que o processo de colagem adotado foi bem sucedido para todos as amostras de caracterização da MLC, independente da espécie de madeira e do tipo de ruptura obtido. O método proposto no Projeto da Nova Norma Brasileira PNBR 7190 (1996) mostrou-se adequado para a caracterização das propriedades de resistência da MLC.
Title in English
not available
Keywords in English
Finger joints
Glued laminated timber
Abstract in English
This work consist in the theoretical and experimental study of finger joints in glued laminated timber (GLULAM), with main objective to evaluate the method proposed in the New Brazilian Draft Code PNBR 7190 (1996) to characterization of GLULAM, with emphasis to finger joints. The species of wood studied were the Pinus elliottii and Eucalipto grandis and the adhesive was the CASCOPHEN RS-216, resorcinol-based, produced by Alba Química Indústria e Comércio Ltda. The geometry of finger joint used in the study was the correspondent to DIN 68140, this is the adopted by producer park of GLULAM in the country. In the tests were evaluated the shear resistance of glue lamina, the perpendicular tension resistance of glue lamina and parallel to grain tension resistance of finger joints. The performance of jointing was evaluated as a function of the relation between the values obtained in the tests with glued wood and clear wood, as well as rupture mode. Concluding remarks that gluing process adopted was well successful to all specimens of wood specie and rupture mode. The method proposed by New Brazilian Draft Code PNBR 7190 (1996) is adequate to characterization of the resistance properties of GLULAM.
 
WARNING - Viewing this document is conditioned on your acceptance of the following terms of use:
This document is only for private use for research and teaching activities. Reproduction for commercial use is forbidden. This rights cover the whole data about this document as well as its contents. Any uses or copies of this document in whole or in part must include the author's name.
Publishing Date
2018-05-21
 
WARNING: Learn what derived works are clicking here.
All rights of the thesis/dissertation are from the authors
CeTI-SC/STI
Digital Library of Theses and Dissertations of USP. Copyright © 2001-2020. All rights reserved.