Proposta De Certificação De Produtos Em Madeira Laminada Colada

Furtado, Francisco Raphael Cabral; Terezo, Rodrigo Figueiredo

doi:10.4322/rif.2014.009

Cited by 1 publication

(1 citation statement)

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“…Such lamellae, joined by glue, are arranged in such a way that their fibers are parallel to each other. Furtado & Terezo (2014) conducted a laboratory analysis of the production process to optimize the quality of paricá GLT. They highlighted critical issues requiring specific actions to obtain products that meet minimum quality standards; this is necessary to reach, gain, and maintain a extricate market face to other products as massive timber.…”

Section: Introductionmentioning

confidence: 99%

CHEMICALLY TREATED GLUED LAMINATED PARICÁ TIMBER (Schizolobium parahyba var. amazonicum)

2019

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In the production of glue-laminated timber (GLT), boards derived from planted forest wood with easy workability are glued on top of one another. The main objective of the present work was to evaluate the performance of paricá timber GLT beams (5 × 10 cm) on GLT. Three procedures were performed: (1) GLT beams (5 × 10 cm) were produced using natural lamellae without chemical preservatives; (2) the individual lamellae (2.5 × 5 cm) were chemically treated, and then glued together; and (3) the beams formed from the glued natural lamellae (5 × 10 cm) were treated chemically. The positions of lamellae on the beams were determined by their modulus of elasticity values (MOE), which were estimated by a non-destructive bending test with a three-point load. The analytical bends, determined by the homogenized section method, and the experimental bends, measured by the four-point bending test, were compared. The differences between the bends were statistically evaluated, and it was found that the experimental bend (21.65 mm) was less than the analytical bend (34.02 mm). There was no significant loss of shear strength or MOE. The axial strength of the chemically untreated beams (49.18 MPa) was significantly higher than that of the untreated beams fabricated from natural lamellae (40.48 MPa). The results indicate that the gluing of treated lamellae does not affect beam performance.

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Section: Introductionmentioning

confidence: 99%