Performance of glued laminated timber (glulam) made from Rubberwood with different lamina assembly patterns and adhesive spreads rates

Abstract Glued laminated timber (glulam) is a great building material with strong mechanical properties that comprises layers of wood (lamina) glued together long-lasting structural adhesives. As the supply large dimensional lumber for construction projects has been in shortage, glulam ideal to replace because it can be made various sizes and shapes, including unique arches using relatively small lumber. This research aims investigate effects different lamina assembly patterns adhesive spread rates on physical rubberwood glulam. For this purpose, lab scale 3-ply was from homogenous grades low-MOE, average-MOE, high-MOE. In addition, also produced mixed low-high-low-MOE high-low-high-MOE. The tested evaluate based Japanese Industrial Standards (JAS 234-2003). results show significantly affect Accordingly, high-MOE at its compression tension surfaces best compared other patterns. although difference insignificant, showed rate positively affected Rubberwood potential used as raw production.