Effects of Nodes on the Properties of Laminated Bamboo Lumber

I. M. Sulastiningsih, Surdiding Ruhendi, Muh. Yusram Massijaya, I Wayan Darmawan, Adi Santoso

Abstract


The objective of this study was to determine the effects of node on the properties of laminated bamboo lumber (LBL) glued with water based polymer-isocyanate adhesive. Bamboo strips for LBL fabrication were prepared from andong bamboo (Gigantochloa pseudoarundinacea) collected from private gardens in West Java. Each bamboo strip has dimension of 40 cm x 2 cm x 0.5 cm. The bamboo strips were assigned into 3 groups by the node positions: without node, with node position of 10 cm from one end of the bamboo strip, and with node position in the centre of the bamboo strip. Prior LBL fabrication, the bamboo strips were treated by cold soaking in 7% boron solution for 2 h. The laboratory scale 3-layer laminated bamboo lumbers were manufactured with 5 different layer compositions: all layers made of bamboo strips without node, inner layer made of bamboo strips with nodes at 10 cm from one end of the strip, inner layer made of bamboo strips with nodes at the centre of the strip, all layers made of bamboo strips with nodes at 10 cm from one end of the strip, and all layers made of bamboo strips with nodes at the centre of the strip.  The glue spread and cold pressing time applied were 250 g/m2 and 1 h, respectively.

The results showed that the average density, moisture content, thickness swelling, bending strength and compression strength of laminated bamboo lumbers were 0.74 g/cm3, 11.3%, 2.9%, 1090 kg/cm2,and560 kg/ cm2, respectively. No delamination occurred in all samples, indicating high bonding quality. The average bonding strength (dry test) of laminated bamboo lumbers was 70.3 kg/cm2. Several properties of laminated bamboo lumber were not significantly affected by the present of nodes in the bamboo strips except the thickness swelling and compression strength. 


Keywords


Laminated bamboo lumber; node; isocyanate; physical and mechanical properties.

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References


American Society for Testing and Materials (ASTM).1995. Standard Test Methods for Evaluating Properties of Wood-Based Fiber and Particle Panel Materials. Annual Book of ASTM Standard. ASTM D 1037-93. Philadelphia.

Ashaari, Z.; R. Hanim; P.M. Tahir; N. Nizam. 2004. Effects of Peroxide and Oxalic Acid Bleaching on the Colour and Gluing Properties of Some Tropical Bamboos. Journal of Biological Science 4(2): 90-94

Badan Pusat Statistik. (BPS). 2010. Statistik Indonesia 2010. Katalog BPS: 1101001. Badan Pusat Statistik. Jakarta.

Correal, J.; L. Lopez. 2008. Mechanical Properties of Colombian Glued Laminated Bamboo in Xiao et al. (Editors). Modern Bamboo Structures. Proceedings of First International Conference on Modern Bamboo Structures (ICBS-2007), Changsa, China, 28-30 October 2007. Pp 121 – 127

Correal, J.; F. Ramirez. 2010. Adhesive Bond Performance in Glue Line Shear and Bending for Glued Laminated Guadua Bamboo. Journal of Tropical Forest Science 22(4): 433-439.

Dransfield, S.; E.A. Widjaya. 1995. Plant Resources of South East Asia No 7; Bamboos. Backhuys Publishers. Leiden.

Guo, Z.W.W. 2007. Laminated Panel Manufacture of Two Kinds of Bamboo for Architecture Material and Property Comparison. http://www.inbar.int/publication/pubdownload.asp. Accessed on 28 June 2007.

Hanim, A.R.; A. Zaidon; F. Abood; U.M.K. Anwar. 2010. Adhesion and Bonding Characteristics of Preservative-Treated Bamboo (Gigantochloa scortechinii) Laminates. Journal of Applied Sciences 10(14): 1435 -1441.

Idris, A.A.; A. Firmanti; Purwito. 1994. Penelitian Bambu Untuk Bahan Bangunan. Strategi Penelitian Bambu Indonesia. Yayasan Bambu Lingkungan Lestari. Bogor: 73-81.

Japan Plywood Inspection Corporation (JPIC). 2003. Japanese Agricultural Standard for Glued Laminated Timber. JAS, MAFF, Notification No. 234. Japan Plywood Inspection Corporation. Tokyo.

Lee, A.W.C.; Y. Liu. 2003. Selected Physical Properties of Commercial Bamboo Flooring. Forest Products Journal 53(6): 23-26.

Mahdavi, M.; P.L. Clouston; S.R. Arwade. 2011. Development of Laminated Bamboo Lumber: Review of Processing, Performance, and Economical Considerations. Journal of Materials in Civil Engineering 23(7):1036-1042.

Nugroho, N.; N. Ando. 2001. Development of Structural Composite Products made from Bamboo II: Fundamental Properties of Laminated Bamboo Board. Journal of Wood Science 47(3): 237-242.

Rittironk, S.; M. Elnieiri. 2008. Investigating Laminated Bamboo Lumber as an Alternate to Wood Lumber in Residential Construction in the United States. Proceedings of First International Conference on Modern Bamboo Structures (ICBS-2007), Changsa, China, 28-30 October 2007. Pp 83-96.

Seng, O.D. 1964. Berat Jenis dari Jenis-Jenis Kayu Indonesia dan Pengertian Beratnya Kayu untuk Keperluan Praktek. Pengumuman LPHH No 1. Bogor.

Shao, Z. P.; L.. Zhou; Y.M. Wu; C. Arnaud. 2010. Differences in Structure and Strength between Internode and Node Sections of Moso Bamboo. Journal of Tropical Forest Science 22(2): 133-138.

Sulastiningsih, I.M.; Nurwati; P. Sutigno. 1996. Pengaruh Jumlah Lapisan terhadap Sifat Bambu Lamina. Buletin Penelitian Hasil Hutan 14(9): 366-373. Pusat Penelitian dan Pengembangan Hasil Hutan & Sosial Ekonomi Kehutanan. Bogor. Indonesia.

Sulastiningsih, I.M.; A. Santoso; T. Yuwono. 1998. Effect of Position Along the Culm and Number of Preservative Brushing on Physical and Mechanical Properties of Laminated Bamboo. Proceedings Pacific Rim Bio-Based Composites Symposium. November 2-5, 1998, Bogor, Indonesia :106 – 113. Faculty of Forestry, Bogor Agricultural University. Bogor.

Sulastiningsih, I.M.; Nurwati; A. Santoso. 2005. Pengaruh Lapisan Kayu terhadap Sifat Bambu Lamina. Jurnal Penelitian Hasil Hutan 23(1): 15-22. Pusat Penelitian dan Pengembangan Hasil Hutan. Bogor. Indonesia.

Sulastiningsih, I.M.; Nurwati. 2009. Physical and Mechanical Properties of Laminated Bamboo Board. Journal of Tropical Forest Science 21(3): 246-251.

Sulastiningsih, I.M.; A. Santoso. 2012. Pengaruh Jenis Bambu, Waktu Kempa dan Perlakuan Pendahuluan Bilah Bambu terhadap Sifat Papan Bambu Lamina. Jurnal Penelitian Hasil Hutan 30(3): 198-206. Pusat Penelitian dan Pengembangan Keteknikan Kehutanan dan Pengolahan Hasil Hutan. Bogor. Indonesia.

Supriana, N.; S. Abdurrohim; Barly; Jasni; Djarwanto; J. Malik; M. Muslich; D. Martono; P. Permadi. 2003. Kajian Peran Pengawetan Kayu Perumahan dan Gedung dalam rangka Pengelolaan Hutan Lestari. Laporan Hasil Penelitian. Pusat Penelitian dan Pengembangan Teknologi Hasil Hutan. Bogor. Tidak terbit.

Suryokusumo, S.; N. Nugroho. 1994. Pemanfaatan Bambu Sebagai Bahan Bangunan. Strategi Penelitian Bambu Indonesia. Yayasan Bambu Lingkungan Lestari. Bogor : 82-87.




DOI: https://doi.org/10.51850/wrj.2013.4.1.19-24

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