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All Journal Jurnal Ilmu dan Teknologi Kayu Tropis
Alamsyah, Eka M
Jurnal Ilmu dan Teknologi Kayu Tropis
Agriculture, Biological Sciences & Forestry

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The Characteristics of the Laminated Board of Oil Palm Trunk Darwis, Atmawi; Massijaya, Muhammad Y; Nugroho, Naresworo; Alamsyah, Eka M
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 12, No 2 (2014): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Jurnal Ilmu dan Teknologi Kayu Tropis

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Abstract

The purpose of this study was to determine the physical and mechanical properties of glue laminated (glulam) of oil palm trunks lumber (OPTL) composed of different number of layers and trunk heights (2 m, 4 m, and 6 m). The number of layers was varied at 2, 3 and 4 layers with the thickness of lamina of 3 cm, 2 cm, and 1.5 cm, respectively. The results showed that the glulam of OPTL retained higher density and mechanical properties compared to those of its solid form. The properties of OPTL glulam decreased from the bottom to the top division of the trunk. The physical and mechanical properties of glulam increased with increasing layers. Modulus of Elasticity (MOE) of OPTL 4 layered glulam increased by more than 50% compared to that of its solid OPT. Isocyanate based adhesive used to produce the glulam resulted in a satisfied bonding indicated by 100% and 0% wood damage in shear and delamination test, respectively. The mechanical properties of OPTL glulam (MOE, MOR, and shear strength) failed to satisfy the requirement of Japan Agricultural Standard for Glued Laminated: No 1152 (2007).Keywords: glulam, laminae, oil palm trunk, physical-mechanical properties
Surian (wood as an Alternative Material for Bonded Wood Products in the Future (II): Laminated Veneer Lumber (LVL)) Alamsyah, Eka M; Karliati, Tati
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 9, No 2 (2011): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Jurnal Ilmu dan Teknologi Kayu Tropis

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Abstract

The objective of this study was to evaluate the performance of laminated veneer lumber (LVL) made from surian (Toona sinensis Roem) compared to sengon (Paraserianthes. falcataria L Nielsen) and rubber (karet) (Hevea brasiliensis Muell) wood which bonded with the common phenol formaldehyde (PF) and urea formaldehyde (UF) adhesives. LVL was assembled from 7 plies veneer with the final moisture content (MC) of veneer is about eight percent. The parameters of LVL i.e., MC, density, percentage of delamination, modulus of rupture (MOR), modulus of elasticity (MOE), horizontal shear strength (flat and edge direction) and formaldehyde emission were evaluated according to Japan Agricultural Standard (JAS). The result showed that delamination ratio value was zero percent. The most interesting finding was the value of formaldehyde emission of both PF and UF-surian LVL were lower than PF and UF rubber or sengon LVL due to their F4S classification of JAS. Values of MOR and horizontal shear strength both PF and UF-surian LVL was lower than rubber LVL, however it was higher than sengon LVL. The physical and mechanical properties of surian LVL met the JAS requirement.Key words: formaldehyde emission, laminated veneer lumber, physical and mechanical properties, Toona sinensis.
Co-Authors Atmawi DARWIS Karliati, Tati Massijaya, Muhammad Y Naresworo Nugroho