Pengaruh Kerapatan Papan Partikel Terhadap Perilaku Mekanika Balok Komposit Kayu Keruing-Papan Partikel Sengon = The Influence Particleboard Density on the Mechanics Behaviour of Composite Beam Made of Keruing Wood with
| Main Author: | Perpustakaan UGM, i-lib |
|---|---|
| Format: | Article NonPeerReviewed |
| Terbitan: |
[Yogyakarta] : Universitas Gadjah Mada
, 1999
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| Subjects: | |
| Online Access: |
https://repository.ugm.ac.id/23442/ http://i-lib.ugm.ac.id/jurnal/download.php?dataId=6391 |
Daftar Isi:
- In the recent time, it is very difficult and costly to get a standard up to big dimension sawn timber. Composition of the quick-grow, low-quality wood with the particleboard as structural wood is expected to produce an optimized composition of the wood. This research was intended to understand the influence of particleboard density on the mechanical behavior of composite beam made of keruing wood with sengon particleboard. Preliminary examination was conducted to obtain physical and mechanical properties of clear specimen of keruing wood. Testing method followed ISO-1976 standard. Sengon particleboard testing followed ASTM-1992 standard. Nine composite beam specimens had dimension of 60 mm wide, 120 mm depth, 2000 mm length was produced represented class of particleboard density, i.e. 0.3 t/m3, 0.4 t/m3, 0.5 t/ m3 where each class was replicated three times. Each layer of lumber glued with urea formaldehyde adhesive at pressure of 0.5 up to 1 MPa for more than 4 hours pressing time. Cold compression applied to beam composite specimen for more than 20 hours. The static lateral loading step used continuously until the beam damage The result showed that 50#MDGL glue spread produced optimized adhesion strength of keruing wood. The strength of composite beams of sengon particleboard and keruing wood was strongly affected by particleboard density, but not the composite beams stiffness. The strongest composite beam produced by BK5 with average value of 8395.903 N while the lowest was resulted by BK3 at 2339.092 N. The strength increased from BK3, BK4, and BK5 was 0%, 154%, and 258.939% while the stiffness from BK3, BK4, and BK5 was 0%, 39.103%, and 43.613%, respectively. Key words: Composite beam, sengon particleboard, density, strength, stiffness