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Article
Some Properties of Bamboo Composite Lumber Made of Gigantochloa pseudoarundinacea
Author(s)
Ignasia Maria Sulastiningsih, Ratih Damayanti, Abdurachman and Achmad Supriadi
Full-Text PDF XML 560 Views
DOI:10.17265/2161-6264/2018.02.006
Affiliation(s)
Forest Products Research and Development Center, Jalan Gunung Batu No. 5, Bogor 16610, Indonesia
ABSTRACT
The objective of the study
was to determine the effect of bamboo-wood layer compositions on the
properties of bamboo composite lumber. Laboratory scale bamboo
composite lumbers (BCLs) with four different core layer materials, i.e., bamboo strips glued
vertically, jabon wood plank (Anthocephalus cadamba Miq.), manii wood plank (Maesopsis eminii Engl.) and sengon wood
plank (Falcataria moluccana (Miq.)
Barneby & J.W. Grimes) were fabricated using Andong bamboo (Gigantochloa pseudoarundinacea (Steud.)
Widjaja) strips glued horizontally as the outer layers and Andong bamboo
zephyrs used as the second and the fourth layers. BCLs were manufactured using water based polymer-isocyanate (WBPI) adhesive with the glue spread of 250 g/m2, and the cold pressing time applied was 1 h. Results
showed that physical and mechanical properties
of BCLs were significantly
affected by the layer compositions. The BCL
consisted of 100% bamboo strips exhibited higher density (0.754 g/cm3)
and mechanical properties (modulus of rupture (MOR) 1,162 kgf/cm2, modulus of elasticity (MOE) 173,757 kgf/cm2,
compression strength 644.7 kgf/cm2 and
hardness 553 kgf), compared to BCLs,
of which the core layer was made
of wood plank (density 0.533 g/cm3, MOR 648 kgf/cm2,
MOE 77,893
kgf/cm2,
compression strength 389.7 kgf/cm2 and
hardness 355 kgf,
respectively). No
delamination occurred in all samples, indicating a high bonding quality. BCL made of 100% bamboo strips had strength values comparable to wood strength class I, while BCL with core layer made of wood plank of jabon, manii
or sengon had strength values similar to
wood strength class III. All BCLs produced are suitable for solid wood substitute.
KEYWORDS
Bamboo strip, bamboo zephyr, wood plank, isocyanate, physical and mechanical properties.
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