Influência de diferentes composições de lâminas de Schizolobium parahyba var. amazonicum (Huber ex Ducke) Barneby e Pinus oocarpa var. oocarpa (Schiede ex Schltdl) para produção de compensados multilaminados

Matos, Antonio Claret de; Júnior, José Benedito Guimarães; Borges, Cilene Cristina; Matos, Lays Camila; Ferreira, Juliana Ceccato; Mendes, Lourival Marin

doi:10.18671/scifor.v47n124.21

Cited by 14 publications

(9 citation statements)

References 10 publications

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“…For ash contents, Matos et al (2019) obtained a content of 0.15% for Pinus wood, lower than that obtained in this study. Pereira et al (2014) obtained 0.68% for coffee wood.…”

Section: Basic Density Of Raw Materialscontrasting

confidence: 97%

“…Based on the obtained value, pine wood can be classified as a low density wood (Figure 3), based on the classification by Coradin et al (2010) and Silveira, Rezende and Vale (2013), who stipulated values between 550 and 720 kg.m -3 for this class. The value obtaine d in this experiment was lower than the result obtained by Matos et al (2019), who reported 530kg.m -3 , for the same species at 18 years of age. is a natural and renewable organic compo u nd, which has properties that can contribute to the ad h esion process (Ang et al, 2019), it is noteworthy that its structure is similar to phenol-based adhesives (Qiao et al, 2015).…”

Section: Basic Density Of Raw Materialscontrasting

confidence: 78%

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Performance of cross laminated timber panels made of Pinus oocarpa and Coffea arabica waste

Furtini

Santos

Garcia

et al. 2021

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The growth of the civil construction sector, made necessary to develop alternative products made of sustainable materials. Within this context came the cross laminated timber panels (CLT), which are formed by gluing veneer arranged at 90°, which provide high strength and great versatility, as constructive elements. This research aimed to evaluate the chemical properties of the particles of both materials and evaluate the performance of CLT panels made with Pinus oocarpa and waste wood from Coffea arabica. The panels were made with three orthogonal layers with veneer of pine and coffee wood, using the phenol-formaldehyde (PF) adhesive with a spread rate of 0.35kgm -² and the hydraulic press with a pressure of 1,2×10 7 N.m -2 for 15 min. The physical, mechanical properties, acoustic and thermal performance of the panels were evaluated. There was a significant difference for water absorption in 2 and 24 hours. The panels produced only with coffee wood waste showed the lowest water absorption rates, corresponding to 10.2 and 33.3%, in 2 and 24 hours. In relation to the MOE, the panels made with varied veneer were statistically equivalent to each other and the panels made of pine blades showed a MOE corresponding to 3,33×10 7 N.m -2 . The same trend was observed for MOR, since the average value obtained for pine panels, corresponding to 1,35x10 8 N.m -2 was significantly higher. Panels made of coffee veneer and pine veneer showed no delamination. With regard to acoustic and thermal evaluation, all panels met the minimum requirements indicated in the standards, with emphasis on coffee wood waste, associated or not with pine wood.

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“…For ash contents, Matos et al (2019) obtained a content of 0.15% for Pinus wood, lower than that obtained in this study. Pereira et al (2014) obtained 0.68% for coffee wood.…”

Section: Basic Density Of Raw Materialscontrasting

confidence: 97%

Section: Basic Density Of Raw Materialscontrasting

confidence: 78%

Performance of cross laminated timber panels made of Pinus oocarpa and Coffea arabica waste

Furtini

Santos

Garcia

et al. 2021

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“…According to the literature, the total extractive values were close to those of Matos et al (2019) In general, the presented contents of the miriti residue do not present limitations, revealing a possible alternative material for manufacturing particleboards in terms of the chemical composition.…”

Section: Physical and Chemical Characterizations Of Pine And Miritisupporting

confidence: 69%

Using miriti petiole to produce particleboards

Furtini¹,

Santos²,

Miranda³

et al. 2023

Ambient. constr.

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his study aimed to use the petiole residues of miriti to partially replace pine wood and evaluate the effects of this incorporation on the physical and mechanical properties of the particleboards. Panels were produced with 0, 25, 50, and 75% of miriti in partial replacement of wood and 12% of urea-formaldehyde adhesive. The chemical-physical properties of miriti residues showed potential particleboard production as they were similar to those of pinewood. For the physical properties, the panels were classified as low density.There was an increase in the compression ratio and, consequently, in the hygroscopicity . For the mechanical properties, it was observed that the modulus of elasticity (MOE) and modulus of rupture (MOR) did not show any statistical differences. For perpendicular traction (PT), there was a significant reduction in 50%. Considering a general analysis of the physical and mechanical properties, up to 40% of mirti can be substituted, as in this situation they meet the properties mentioned in CS-236-66, except for PT for commercialization of the panels.

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“…Este valor de teor de umidade permite a realização da colagem com adesivos utilizados na fabricação de compensados de paricá (Matos et al 2019). Por outro lado, considerando o teor de umidade obtido e a variação de umidade relativa do ar ao longo do ano na região de produção dos painéis de compensados analisados (Silva et al 2019), sobretudo durante a estação das chuvas, poderá fazer com que ocorram inchamentos e retrações significativas na madeira.…”

Section: Caracterização Físicaunclassified

Avaliação das propriedades físicas e mecânicas da madeira de paricá (Schizolobium amazonicum) utilizada na indústria de compensados no Estado do Maranhão

Lima

Nascimento

Santos

et al. 2022

RSD

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O paricá (Schizolobium amazonicum) é uma espécie nativa da região amazônica, cujas características físicas e mecânicas estão na base da aceitação desta espécie por parte do mercado madeireiro, sobretudo através da sua utilização para produção de painéis de compensado e painéis de lâminas paralelas (LVL). O objetivo deste trabalho foi avaliar as propriedades físicas e mecânicas da madeira de paricá utilizadas na indústria de compensados no Estado do Maranhão. Foram analisados o teor de umidade, as densidades aparente e básica, a variação volumétrica, as resistências à compressão paralela e perpendicular à grã, a resistência ao cisalhamento paralelo à grã, a resistência à flexão e os módulos de elasticidade à compressão paralela à grã e à flexão. O lote de madeira analisado apresentou teor de umidade em equilíbrio ao ar (11,33%), baixa densidade aparente (275,57 kg.m-3) e variação volumétrica reduzida (8,75%), estando estas propriedades abaixo dos valores apresentados pela bibliografia, para madeiras de idades semelhantes. As propriedades mecânicas analisadas (resistência à compressão paralela à grã, resistência à compressão normal à grã, módulo de ruptura na flexão, módulo de elasticidade na flexão, resistência ao cisalhamento paralelo à grã e módulo de elasticidade à compressão paralela à grã) apresentaram igualmente valores inferiores à média dos resultados obtidos na bibliografia. Desta forma, a utilização de madeira de paricá em painéis de compensados constitui uma alternativa válida, considerando que estes são leves e estáveis no que concerne à variação dimensional, quando comparados com os produtos provenientes de madeira de eucalipto. No entanto, é pertinente realizar ações que visam melhorar as propriedades mecânicas da madeira de paricá, de forma a aumentar as propriedades de resistência e de rigidez.

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Influência de diferentes composições de lâminas de Schizolobium parahyba var. amazonicum (Huber ex Ducke) Barneby e Pinus oocarpa var. oocarpa (Schiede ex Schltdl) para produção de compensados multilaminados

Cited by 14 publications

References 10 publications

Performance of cross laminated timber panels made of Pinus oocarpa and Coffea arabica waste

Performance of cross laminated timber panels made of Pinus oocarpa and Coffea arabica waste

Using miriti petiole to produce particleboards

Avaliação das propriedades físicas e mecânicas da madeira de paricá (Schizolobium amazonicum) utilizada na indústria de compensados no Estado do Maranhão

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