The Effects of the Rubber Used As Reinforcement Material on the Bending Strength of the Laminated Scotch Pine Wood


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Uzel M., Nzokou P., Söğütlü C.

VI. International Furniture Congress, Trabzon, Turkey, 2 - 05 November 2020, vol.1, pp.98

  • Publication Type: Conference Paper / Summary Text
  • Volume: 1
  • City: Trabzon
  • Country: Turkey
  • Page Numbers: pp.98

Abstract

In the furniture industry, the lamination technology is used widely on the bending members and the applications which are needed a higher load-carrying capacity. It is aimed to improve the mechanical properties, weight/strength ratio, and cost of the composite materials by researching the parameters as different wood species, types of adhesive, types of reinforcement material, and the placement of the layers for the lamination technology. In the scope of the experimental study, 90 mm x 90 mm x 1710 mm sized glued laminated wood consist of 3 and 5 Scotch pine (Pinus sylvestris L.) laminations were manufactured. In the lamination process, epoxy and polyurethane adhesives were used. Moreover, 3 mm thickness of rubber was used to improve the flexural properties at the lamination surface. The specimens are tested according to TS EN 408+A1 “Timber structures - Structural timber and glued laminated timber - Determination of some physical and mechanical properties” standard. Bending strengths were determined in perpendicular to the bonding line and parallel to the bonding line. The test results were compared with those of Scotch pine beams (SPB) and the non-reinforced glued laminated wood (NR-glulam) beams. It was observed that the bending strengths of NR-glulam beams were better than those of solid wooden beams. In addition to that the use of 3 mm thickness of rubber caused to decrease the bending strength significantly. The highest bending strengths were observed from the tests of glued laminated timber beams manufactured using five layers with polyurethane adhesive (5PN-glulam).