Strength of glue line for reforestation wood

Abstract

This paper aims to evaluate the shear strength of glued laminated timber (glulam) made of three wood species: Tectona grandis, Pinus oocarpa and Eucalyptus sp.. The bonds were made with lamellae with no chemical treatment, using two-component adhesive based on melamine-urea-formaldehyde (MUF). Glue line shear tests were made for wood in local moisture content and high humidity, as well as delamination tests. The results presented in the glue line shear strength tests in dry condition and delamination for the three species indicate better performance of Pinus oocarpa. It was concluded that this species there is potential to produce MLC utilizing the MUF adhesive.

Keywords

• Melamina-ureia-formaldeído
• Tensão de cisalhamento
• Delaminação