Veneer strand flanged I-beam with MDF or particleboard as web material III: effect of strand density and preparation method on the basic properties

Abdalla, Ashraf Mohamed Ahmed; Sekino, Noboru

doi:10.1007/s10086-004-0678-3

Cited by 2 publications

(16 citation statements)

References 5 publications

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“…Boonstra et al [35] studied steam pretreatments at 200 • C and 210 • C. Han et al [36] studied the press speed and the humidity of the raw material. Abdalla et al [37] studied the density of the boards. Blanchet et al [38] studied the amount of wood particles and UF (12%, 14% and 16%) in the outer layers (12%, 14% and 16%) and in the core (8%).…”

Section: Introductionmentioning

confidence: 99%

Physical and Mechanical Properties of Particleboard Made from Palm Tree Prunings

Ferrández-García

Ferrández-Villena

et al. 2018

Forests

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Palm trees are very fast-growing species. Their management produces annually a large amount of biomass that traditionally has been either disposed of at dumping sites or has been burnt onsite. This paper presents an experimental study to obtain particleboard using this biomass in a low energy process (short pressing time and low pressing temperature), using particles of different sizes from the rachis (midrib) of the three palm species most representative of urban gardening in Spain: canary palm (Phoenix canariensis hort. ex Chabaud), date palm (Phoenix dactylifera L.) and washingtonia palm (Washingtonia robusta H. Wendl). Their physical and mechanical properties were tested, and the feasibility of their use as a construction material was evaluated. The results showed that the manufactured particleboard had similar performance to conventional wood particleboard and good thermal insulation properties. Boards made with the canary species showed better mechanical performance. The properties of the particleboard depended on the particle size and species. The use of the pruning waste of palm trees to produce durable materials such as particleboard could be beneficial to the environment since it is a method of carbon fixation, helping to decrease atmospheric pollution and reducing the amount of waste that ends in dumping sites.

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Section: Introductionmentioning

confidence: 99%

Physical and Mechanical Properties of Particleboard Made from Palm Tree Prunings

Ferrández-García

Ferrández-Villena

et al. 2018

Forests

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“…Zucc) veneer strands with dimensions of 3 ¥ 4 ¥ 470 mm (thickness ¥ width ¥ length), each having a density of 0.51 g/cm 3 , and Japanese cedar (Cryptomeria japonica D. Don) veneer strands 3 ¥ 4 ¥ 470 mm, each having a density of 0.34 g/cm 3 , were used as raw material for the flange. MDF (450 ¥ 470 ¥ 9 mm) with a density of 0.73 g/cm 3 and particleboard having the same dimensions as the MDF and a density of 0.82 g/cm 3 were used as web materials. Also five-ply plywood with a nominal thickness of 9 mm with plies of 1, 2.5, 2, 2.5, and 1 mm thicknesses and a density of 0.57 g/cm 3 classified as type I panel by JAS 6 was used.…”

Section: Methodsmentioning

confidence: 99%

“…1). In the second 2 and third 3 parts of this study series, I-beams with balanced mechanical properties and dimensional stability were able to be produced by conventional hot pressing using the optimal combinations among an array of strand dimension, strand preparation method, strand density, resin type between web and flange, resin application rate between strands, pressing time, and moisture content in the wood resin system.…”

Section: Introductionmentioning

confidence: 99%

“…The observed fracture mode 3 was mainly horizontal web shear or buckling, which directed our thinking power to investigate the balance of strength between web and flange parts by either using web materials having different strength properties, e.g., plywood or oriented strand board (OSB) in addition to particleboard and medium density fiberboard, or fabricating low flange density I-beam. However, reasonable compaction ratio (defined as the ratio of the flange density to the strand raw material density) was still required in order not to affect the bending properties as cited in literature.…”

Section: Introductionmentioning

confidence: 99%

“…However, reasonable compaction ratio (defined as the ratio of the flange density to the strand raw material density) was still required in order not to affect the bending properties as cited in literature. 4,5 The objectives of this part of the study were: (1) to investigate the effect of the web material type on the performance of the I-beams, and (2) to investigate the possibility of fabricating I-beams with low flange density that still have properties comparable with those of I-beams produced in the previous parts of the study (flange density 0.70 g/cm 3 ).…”

Section: Introductionmentioning

confidence: 99%

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Veneer strand flanged I-beam with MDF or particleboard as web material IV: Effect of web material types and flange density on the basic properties

Abdalla

Sekino

2006

J Wood Sci

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The balance of strength between the flange and web parts of veneer strand flanged I-beam was investigated by the following methods: (1) use of different web material types, such as plywood, oriented strand board (OSB), particleboard (PB), and medium density fiberboard (MDF), that have different strength properties; and (2) fabrication of I-beams with low-density flanges using low-density strands with PB web material. Replacing PB or MDF with plywood showed slight significant improvement in the modulus of rupture but not in the modulus of elasticity of the entire I-beam. However, PB and MDF showed competent performance in comparison with OSB, thus strengthening the promising future of the use of PB or MDF as web material to fabricate I-beams. Hot-pressing conditions used for I-beam production exerted slightly adverse effects on the bending properties of PB, but not on MDF, OSB, and plywood web materials. The flange density of 0.60 g/cm 3 was considered to be the lower limit that provides I-beams with balanced mechanical properties and dimensional stability.

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Veneer strand flanged I-beam with MDF or particleboard as web material III: effect of strand density and preparation method on the basic properties

Cited by 2 publications

References 5 publications

Physical and Mechanical Properties of Particleboard Made from Palm Tree Prunings

Physical and Mechanical Properties of Particleboard Made from Palm Tree Prunings

Veneer strand flanged I-beam with MDF or particleboard as web material IV: Effect of web material types and flange density on the basic properties

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