Performance of Glued-Laminated Beams Made from Small Diameter Fast-Growing Tree Species


	Journal of Biological Sciences
	Year: 2010 \| Volume: 10 \| Issue: 1 \| Page No.: 37-42 DOI: 10.3923/jbs.2010.37.42

Performance of Glued-Laminated Beams Made from Small Diameter Fast-Growing Tree Species

Evalina Herawati, Muh. Yusram Massijaya and Naresworo Nugroho

Abstract: This study presents properties test results of glued-laminated (glulam) beams made from two fast growing tree species, namely African wood (Maesopsis eminii) and mangium (Acacia mangium) using water based polymer isocyanate (WBPI) as a binder. Laminations were used consist of 2, 4, 6, 8 and 12 cm in widthnesses, 2 cm in thickness and 260 cm in length. Each lamination was graded using Machine Stress Grading (namely by Panter or plank sorter) to determine its Modulus of Elasticity (MOE). Cross-section of five types of glulam beams was 6x12 cm, arranged of various widths and based on MOE of laminations. The study results describe that glulam beams made from mangium showed better performance compared to those of African wood based on values of MOE and Modulus of Rupture (MOR). In general, results showed that almost all of glulam beams types of both wood species fulfill the JAS 234:2003 standard in moisture content, MOE, MOR, shear strength and immersion delamination test. However, performance of glulam beams was unsatisfactory in wood failure ratio and boiling water soak delamination test.

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How to cite this article:

Evalina Herawati, Muh. Yusram Massijaya and Naresworo Nugroho, 2010. Performance of Glued-Laminated Beams Made from Small Diameter Fast-Growing Tree Species. Journal of Biological Sciences, 10: 37-42.

DOI: 10.3923/jbs.2010.37.42

URL: https://scialert.net/abstract/?doi=jbs.2010.37.42

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