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Characteristics of glued laminated beams made of teak wood (Tectona grandis)

This research aimed to evaluate the effects of different adhesives, amounts of glue, and pressing time on the mechanical properties of glued laminated beams (glulam) made of Tectona grandis wood. The beams were produced with 5 battens: two of dynamic modulus of elasticity, class 1 - MOEd C1, on the faces; and three of class 2 - MOEd C2, in the core. Gluing was performed with the use of resorcinol-phenol-formaldehyde (RPF) adhesive at the amounts of 350 and 450 g.m- 2 and pressing time of 5 and 8 hours; and emulsion polymer isocyanate (EPI) adhesive at the amounts of 180 and 220 g.m- 2 and pressing time of 3 and 4 hours. The results of the mechanical properties of beams did not show a clear relationship of the effects of the studied variables on the evaluated properties of static bending. The beams glued with RFF adhesive presented higher resistance of the glue line compared with the beams glued with EPI adhesive.

resorcinol-phenol-formaldehyde; glue line; static bending


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