Effects of strand length and layer structure on some properties of strandboard made from bamboo

Sumardi, Ihak; Kojima, Yoshiyuki; Suzuki, Shuichi

doi:10.1007/s10086-007-0927-3

Cited by 15 publications

(13 citation statements)

References 3 publications

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“…An OSB is a matted panel made of strands that are sliced in the longitudinal direction from fast-growing round wood logs with small diameters and bonded with an exterior-type binder under heat and pressure (Structural Board Association 2005). A large number of studies on bamboo OSB have been conducted, showing that they can be effectively manufactured at an industrial scale (Lee et al 1996;Sumardi et al 2008;Febrianto et al 2012;Sumardi and Suzuki 2013).…”

Section: Introductionmentioning

confidence: 99%

Effect of Bamboo Species and Resin Content on Properties of Oriented Strand Board Prepared from Steam-treated Bamboo Strands

et al. 2015

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The objective of this research was to evaluate the effect of bamboo species and resin content on the physical and mechanical properties of oriented strand boards (OSBs) prepared from steam-treated bamboo strands. The strands from three species of Indonesian bamboo, namely Andong (Gigantochloa verticillata), Betung (Dendrocalamus asper), and Ampel (Bambusa vulgaris), were steamed at 126 °C for 1 h at a pressure of 0.14 MPa. Three-layered OSBs with the core layer oriented perpendicularly to the face layers were prepared by bonding them together with 3 to 5% methylene diphenyldiisocyanate (MDI) resin based on ovendried strands and with the addition of 1% paraffin. The strand compositions for the face, core, and back layers were 25%, 50%, and 25%, respectively. The slenderness ratios and aspect ratios of the strands ranged from 71.02 to 76.60 and from 2.96 to 3.02, respectively. The physical and mechanical properties of the OSBs fabricated from Andong and Betung were better than those from Ampel, and the properties of all OSBs were improved by increasing their resin content. OSBs from Betung with 3 to 5% resin content and those from Andong and Ampel with 4 to 5% resin content showed strength retention of more than 50%, which means they can be used for exterior structural applications. Except for OSBs fabricated from Ampel with 3% resin content, the properties of all OSBs prepared in this study were higher than the minimum values required by the CSA O437.0 (grade O-1) standard (2011).

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Section: Introductionmentioning

confidence: 99%

Effect of Bamboo Species and Resin Content on Properties of Oriented Strand Board Prepared from Steam-treated Bamboo Strands

et al. 2015

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“…An interesting point was that the standard deviation of the UNID board was higher than the standard deviation of the random board. The simplicity of the RAND board mat forming influences the standard deviation of the RAND board, and shorter strandlengths were more easily oriented [8].…”

Section: Bending Propertiesmentioning

confidence: 99%

“…Bamboo strandboard for structural use [1], bamboo zephyr board [2], properties of bamboo particleboard [3], dimensional stability improvement using a steam-injection press [4], influence of age, particle size, resin and wax content on board properties [5], application of bamboo powder as main material for particleboard production [6], manufacturing and basic properties of bamboo strandboard, including alignment angle parameters [7], strand-length [8], board densities [9] and random board [10] have been investigated. However, most of these studies were based on the application of short-strand bamboo.…”

Section: B 1 Introductionmentioning

confidence: 99%

Effect of Board Type on Some Properties of Bamboo Strandboard

2015

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Abstract. The objective of this study was to evaluate the properties of bamboo strandboard (OSB) by comparing different board types and strand-lengths. Bamboo strandboards with nominal dimensions of 37 mm by 37 mm by 12 mm and target density 0.65 g/cm 3 were manufactured using moso bamboo (Pyllostachys pubescent Mezel) and MDI resin to produce two types of strandlength. Two types of strand length and MDI resin were used to produce three types of strandboard. The bending properties and dimensional stability of the strandboards were evaluated according to the Japanese Industrial Standard (JIS) for particleboard. The results of this experiment indicate that the bending properties and internal bond strength were affected by both board type and strand-length. The distribution of resin inside the 80 mm strandboard was less homogenous than in the 50 mm strandboard, which affects the internal bond strength. Thickness swelling of the RAND board was the highest and linear stability was affected substantially by strand alignment. The RAND board and cross-oriented 3LAY board effectively restrained linear expansion in the direction perpendicular to the strand alignment. A cross-oriented core may be the most effective way to reduce dimensional change and bending property values in perpendicular directions.

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“…In a previous research study, Sumardi et al (2008) determined the strand angle distribution via forming tests of 96 combinations of strand length, FFD, and plate spacing ( Fig. 1).…”

Section: Angle Measurementmentioning

confidence: 99%

“…For each combination, about 1000 strands were tested. Sumardi et al 2008) To measure the strand angle, photographs of strands were recorded as digital image data. The orientation angle was measured with a personal computer using the free software Scion Image version 3.0.…”

Section: Angle Measurementmentioning

confidence: 99%

Parameters of Strand Alignment Distribution Analysis and Bamboo Strandboard Properties

Sumardi

Suzuki

2013

BioResources

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Strand length, free-fall distance (FFD), and plate spacing was varied to control the strand alignment distribution of strandboard. To determine the strand angle distribution, photographs of strands were recorded as digital image data, and strand angle analysis was conducted using a modified von Mises distribution function. A part of this measurement was used as a reference for the alignment in the board produced. The results of strand alignment distributions showed that the k value was a function of strand length, FFD, and plate spacing. The k value can be improved by adjusting the plate spacing closer to the strand width, shortening the FFD, and using long strands. The power equation model can describe those relations. The bending properties and linear expansion (LE) were greatly affected by the FFD and the plate spacing. The use of low FFD and narrow plate spacing improved the bending properties. The decreasing bending properties in the parallel direction could be comparable to the increasing ones in the perpendicular direction. The contribution of bamboo strand in the longitudinal direction affected these results.

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Effects of strand length and layer structure on some properties of strandboard made from bamboo

Cited by 15 publications

References 3 publications

Effect of Bamboo Species and Resin Content on Properties of Oriented Strand Board Prepared from Steam-treated Bamboo Strands

Effect of Bamboo Species and Resin Content on Properties of Oriented Strand Board Prepared from Steam-treated Bamboo Strands

Effect of Board Type on Some Properties of Bamboo Strandboard

Parameters of Strand Alignment Distribution Analysis and Bamboo Strandboard Properties

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