Wood-bamboo particleboard: Mechanical properties

Almeida, Aliane Cardoso de; Araújo, Victor Almeida De; Morales, Elen Aparecida Martines; Gava, Maristela; Munis, Rafaele Almeida; Garcia, José Nivaldo; Cortez-Barbosa, Juliana

doi:10.15376/biores.12.4.7784-7792

Cited by 25 publications

(11 citation statements)

References 8 publications

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“…Contudo, segundo MOTA et al [25] os valores de densidade para as diversas espécies de bambu podem sofrer variações, inclusive dentro da mesma espécie, principalmente devido a idade e estrutura anatômica. Com isso, a densidade é um parâmetro que depende principalmente do conteúdo, espessura da parede das células e diâmetro das fibras, sendo que espécies com densidade básica mais baixa apresentam fibras mais finas [26,27]. O valor de densidade básica influencia na quantidade de partículas utilizadas para produção do compósito, pois está diretamente relacionado com a sua massa.…”

Section: Propriedades Físicas Valorunclassified

Avaliação física e mecânica de compósitos de gesso reforçados com fibra de Bambusa tuldoides

et al. 2022

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RESUMO Essa pesquisa objetivou avaliar o potencial do bambu Bambusa tuldoides como reforço na matriz de gesso. Foi determinada a densidade básica, dimensões de fibras e constituição química da matéria-prima. Foram produzidos compósitos com substituição em volume da pasta de gesso por 0, 5, 10, 15, 20, 25 e 30% de bambu com uma relação água/gesso de 1:1. Para a caracterização mecânica dos compósitos foram realizados ensaios de flexão estática, compressão e densidade aparente. Os valores obtidos na avaliação da fibra apresentaram valores próximos à literatura. Na caracterização dos compósitos todas as propriedades tiveram regressão quadrática significativa e foi possível verificar o comportamento similar entre propriedades mecânicas e a densidade. Na densidade ocorreu um aumento do seu valor até a porcentagem de 17,41% que pode ser justificado devido à absorção da água pela fibra decorrente da presença de pontuações, o que gera uma diminuição na relação água gesso e um aumento da densidade. Já o decréscimo da densidade a partir de 17,41% está relacionado com a grande quantidade de fibras presente que ficam emaranhadas e causam espaços vazios já que a pasta de gesso não consegue infiltrar nesses locais. Na compressão, as porcentagens entre 3,37 e 26,19% são os que atenderam as exigências normativas (maior que 2 MPa), e na flexão as porcentagens entre 0 e 27,23% são as que estão em conformidade com a norma (maior que 1 MPa). Os resultados mostraram que a utilização do bambu Bambusa tuldoides como reforço é viável entre as porcentagens 3,37 e 26,19% para atender todas as exigências normativas.

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Section: Propriedades Físicas Valorunclassified

Avaliação física e mecânica de compósitos de gesso reforçados com fibra de Bambusa tuldoides

et al. 2022

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“…Bamboo was found to be a good reinforcing material for particleboard. De Almeida et al [ 20 ] reported that the incorporation of 25% and 50% of Dendrocalamus asper bamboo into particleboard made of Eucalyptus urophylla × grandis wood had improved the bending strength of the particleboard produced. Mixing a more compressible wood with other noncompressible wood could enhance the compression and consolidation of the particleboard [ 21 ].…”

Section: Introductionmentioning

confidence: 99%

Chemical, Physical, and Mechanical Properties of Belangke Bamboo (Gigantochloa pruriens) and Its Application as a Reinforcing Material in Particleboard Manufacturing

et al. 2022

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This study aimed to analyze the basic properties (chemical composition and physical and mechanical properties) of belangke bamboo (Gigantochloa pruriens) and its potential as a particleboard reinforcement material, aimed at increasing the mechanical properties of the boards. The chemical composition was determined by Fourier transform near infrared (NIR) analysis and X-ray diffraction (XRD) analysis. The physical and mechanical properties of bamboo were evaluated following the Japanese standard JIS A 5908 (2003) and the ISO 22157:2004 standard, respectively. The results showed that this bamboo had average lignin, holocellulose, and alpha-cellulose content of 29.78%, 65.13%, and 41.48%, respectively, with a degree of crystallinity of 33.54%. The physical properties of bamboo, including specific gravity, inner and outer diameter shrinkage, and linear shrinkage, were 0.59%, 2.18%, 2.26%, and 0.18%, respectively. Meanwhile, bamboo’s mechanical properties, including compressive strength, shear strength, and tensile strength, were 42.19 MPa, 7.63 MPa, and 163.8 MPa, respectively. Markedly, the addition of belangke bamboo strands as a reinforcing material (surface coating) in particleboards significantly improved the mechanical properties of the boards, increasing the modulus of elasticity (MOE) and bending strength (MOR) values of the fabricated composites by 16 and 3 times.

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“…Thus, particleboard is an effective method to utilize various biological resources, and various related studies have been reported. De Almeida et al (2017) made the wood-bamboo-based particleboard and evaluated its mechanical properties. Bekhta et al (2013) evaluated the properties of the wood-straw-based particleboard.…”

Section: Introductionmentioning

confidence: 99%

Lateral load carrying capacities of particleboard shear walls made by gluing with timber studs

Pang

Lee

2022

BioRes

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Particleboard shear walls were developed and their lateral load carrying capacities were evaluated. The shear walls were made by connecting particleboards and timber studs with polyurethane (PUR) or nails. Seven types of particleboard shear wall specimens were manufactured by varying the wood species, size of the timber studs, and number of particleboards. The size of the shear wall specimens was 2.4 m × 2.7 m, and the bottom of the shear wall was fixed to the steel frame of the test equipment using hold-downs and angle brackets. As a result, the lateral load carrying capacities of the glued particleboard shear wall (73.4 to 75.6 kN/m) were 3.2 times higher than that of the typical light-frame shear wall and higher than the experimental data of the cross-laminated timber (CLT) wall in the CLT handbook. All glued specimens failed at the hold-down and angle bracket, and there was no damage at the glue layer between a particleboard and timber studs. The shear performance with different combinations of species, stud size, and number of particleboards was not significantly different, and the shear strength of the nailed specimen was approximately 20% lower than that of the glued specimen.

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Wood-bamboo particleboard: Mechanical properties

Cited by 25 publications

References 8 publications

Avaliação física e mecânica de compósitos de gesso reforçados com fibra de Bambusa tuldoides

Avaliação física e mecânica de compósitos de gesso reforçados com fibra de Bambusa tuldoides

Chemical, Physical, and Mechanical Properties of Belangke Bamboo (Gigantochloa pruriens) and Its Application as a Reinforcing Material in Particleboard Manufacturing

Lateral load carrying capacities of particleboard shear walls made by gluing with timber studs

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