Physical and mechanical properties of glued laminated lumber of pine (Pinus merkusii) and Jabon (Anthocephalus cadamba)

Abstract

The aim of this research was to determine the physical and mechanical properties of glued laminated lumber (glulam) made from jabon (Anthocephalus cadamba) and pine (Pinus merkusii). Three layers of lamina from each wood species were bonded using isocyanate adhesive with a glue spread of 280 g·m-2 and then pressed using cold press with a specific pressure of 1.47 MPa. Samples had dimensions of 3 cm×6 cm×100 cm (thickness, width, and length, respectively). Glulam properties were tested based on Japanese Agricultural Standard (JAS) 234-2003. The results showed that the density of glulam was 0.36 g·cm-3 for jabon and 0.73 g·cm-3 for pine. The moisture content of all glulams fulfilled the JAS standard. The mechanical properties of pine glulam fulfilled the JAS standard in all tests, whereas jabon glulam fulfilled the standard in the modulus of rupture and shear tests.