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Production of glued laminated timber with copper azole treated maritime pine

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Production of glued laminated timber with copper azole treated maritime pine.pdfA study was conducted to evaluate the performance of glued laminated timber (glulam) of maritime pine treated with a copper azole preservative product. Shear strength of glue lines met the requirements of EN 386 (2001) with no influence of clamping pressure and cure temperature. According to the same standard, delamination was satisfactory for higher cure temperatures applied with a clamping pressure of 0.6 N/mm2. Finger joints made with treated wood gave satisfactory bending strength. The preservative treatment did not influence the modulus of elasticity of the beams. According to a Monte Carlo simulation and following the requirements of EN 1194 (2002), glulam of class GL 28c can be manufactured if visually graded maritime pine of classes E and EE (NP 4305 1995) is used in the inner and outer lamellas, respectively, and class GL 24h when using both grades in equal proportions randomly distributed through the glulam element.1.06 MBAdobe PDF Download

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Abstract(s)

A study was conducted to evaluate the performance of glued laminated timber (glulam) of maritime pine treated with a copper azole preservative product. Shear strength of glue lines met the requirements of EN 386 (2001) with no influence of clamping pressure and cure temperature. According to the same standard, delamination was satisfactory for higher cure temperatures applied with a clamping pressure of 0.6 N/mm2. Finger joints made with treated wood gave satisfactory bending strength. The preservative treatment did not influence the modulus of elasticity of the beams. According to a Monte Carlo simulation and following the requirements of EN 1194 (2002), glulam of class GL 28c can be manufactured if visually graded maritime pine of classes E and EE (NP 4305 1995) is used in the inner and outer lamellas, respectively, and class GL 24h when using both grades in equal proportions randomly distributed through the glulam element.
In dieser Studie wurden die Eigenschaften von Brettschichtholz (Glulam) aus Strandkiefernholz, das mit Kupferazol-Schutzmittel behandelt wurde, untersucht. Die Scherfestigkeit der Klebstofffugen erfüllte die Anforderungen der EN 386 (2001). Dabei hatten der Pressdruck und die Aushärtungstemperatur keinen Einfluss. Bei höheren Aushärtungstemperaturen und einem Spanndruck von 0,6 N/mm² ergaben sich bezüglich den Anforderungen der EN 386 zufrieden stellende Delaminierungsergebnisse. Die Biegefestigkeit der Keilzinkenverbindungen aus behandeltem Holz war ebenfalls zufrieden stellend. Die Schutzmittelbehandlung hatte keinen Einfluss auf den E-Modul der Träger. Eine Monte-Carlo-Simulation ergab, dass auf Basis der EN 1194 (2002) Brettschichtholz der Klasse GL 28c hergestellt werden kann, wenn für die inneren bzw. äußeren Lamellen visuell sortiertes Strandkiefernholz der Klassen E bzw. EE (NP4305:1995) verwendet wird, oder dass Klasse GL24h hergestellt werden kann, wenn beide Klassen zu gleichen Anteilen zufällig im Querschnitt verteilt verwendet werden.

Description

Fonte: https://www.researchgate.net/publication/226806272_Production_of_glued_laminated_timber_with_copper_azole_treated_maritime_pine

Keywords

Shear Strength Treated Wood AITC Untreated Wood Glue Line

Pedagogical Context

Citation

Gaspar, F., Cruz, H., Gomes, A. et al. Production of glued laminated timber with copper azole treated maritime pine. Eur. J. Wood Prod. 68, 207–218 (2010). https://doi.org/10.1007/s00107-009-0373-6.

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Publisher

Springer Nature

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Without CC licence

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