Potential of rubberwood (Hevea brasiliensis) for structural use after the period of latex extraction: a case study in Brazil

Eufrade-Junior, Humberto de Jesus; Ohto, Jéssica Monari; Silva, Lucas Luís da; Palma, Hernando Alfonso Lara; Ballarin, Adriano Wagner

doi:10.1007/s10086-015-1478-7

Cited by 34 publications

(12 citation statements)

References 15 publications

(17 reference statements)

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“…Physical and mechanical wood properties were reported by central tendency (mean) and dispersion (coefficient of variation). Additionally, strength values of the sample (considered as the set of the six trees) were reported in terms of characteristic values, estimated using the equation recommended by standard NBR 7190 (ABNT, 1997;Eufrade et al, 2015).…”

Section: Statistical Analysis Of Resultsmentioning

confidence: 99%

Properties of Young Guapuruvu (Schizolobium parahyba) Wood from a Forest Recovery Area

et al. 2018

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Guapuruvu is one of the fastest growing Atlantic Forest species. It is also considered one of most important species in forest recovery areas, starting to compete with other individuals during the second stage of succession, as well as showing a capacity to be harvested and processed at this stage, after fulfilling its function as a pioneer. There are no conclusive studies about the technological potential of the wood from the young guapuruvu trees characteristic of this context. The present study evaluated the physical-mechanical properties and quality of guapuruvu wood from young trees (15 years old) from forest recovery areas in accordance with NBR 7190. The presence of tension wood did not influence the homogeneity of the wood, which is classified as strength class C20-hardwood, with characteristic strength of 21.47 MPa in compression parallel to the grain, characteristic tension strength of 23.12 MPa parallel to grain and modulus of elasticity (MOE) of 5,925 MPa. Basic and apparent densities were 290 kg/m 3 and 336 kg/m 3 respectively. However, its low density did not lead to low mechanical strength. The high ratio between the values of its mechanical properties and apparent density, added to its high homogeneity-despite the presence of tension wood-demonstrated the good quality of its wood.

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Section: Statistical Analysis Of Resultsmentioning

confidence: 99%

Properties of Young Guapuruvu (Schizolobium parahyba) Wood from a Forest Recovery Area

et al. 2018

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“…All results were reported to the EMC (12%), using a conversion coefficient of 3% (of variation per 1% of MC variation) for strength properties and 2% for elastic properties. Wood strength rating was established using the characteristic value of the compression strength parallel to the grain (Eufrade Júnior et al, 2015).…”

Section: Mechanical Testsmentioning

confidence: 99%

Comparison between growth performance in two silvopastoral systems comprising trees, short-lived perennial shrub, a forage, and livestock)

Longui

Justo

Amorim

et al. 2021

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We aim to determine the growth performance of two 20-year-old silvopastoral systems comprising two timber trees, a palm tree), a short-lived perennial shrub, a forage and livestock; and to investigate fibre features and certain physical and mechanical properties of two timber trees (Myracrodruon urundeuva and Peltophorum dubium) in two plantation systems. The first system is called MP with two timber trees and the second one is called MPS with two timbers and a palm tree. The studied systems showed that it was possible to successfully combine fast-growing species, animals, forage and woody tree species, with a production cycle of more than 50 years of different goods and services (e.g., ornamentals, palm hearts, landscaping, fruits, seeds, bee pasture, meat, and wood). The height, diameter and volume for M. urundeuva trees in the MP system were greater than in the MPS system, whereas no difference between the systems was observed for P. dubium. By comparison, the growth and volume in P. dubium were greater than in M. urundeuva. For wood properties, it was shown that both systems can be used successfully, but the MPS system performed better than the MP system, in the aim of wood production of high mechanical strength and calorific value. In addition, the MPS intercropping system can yield more goods and services than the MP system, both systems bring returns with short-term (bean seed, forage, pasture), medium-term (forage, palm products, pasture, wood), and long-term (wood) financial returns.

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“…Para Ramos et al (2016), o Brasil não utiliza a madeira de seringueira tradicionalmente na indústria, mas para atividades como produção de biomassa. De acordo com Eufrade Júnior et al (2015) esta matéria-prima pode ser utilizada para aplicações em estruturas primárias, secundárias, construção leve e indústria de móveis, além de ser uma opção no mercado brasileiro para diminuir a demanda de madeira por espécies florestais nativas.…”

Section: Introductionunclassified

Desempenho de painéis de madeira laminada colada cruzada constituídos com eucalipto, seringueira e bambu

Garcia

Furtini

Brito

et al. 2021

RSD

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O objetivo desta pesquisa foi avaliar as propriedades físicas e mecânicas dos painéis de madeira laminada colada cruzada (MLCC) e bambu laminada colado cruzado (BLCC). Para a colagem das lâminas de madeiras (Eucalyptus grandis e Hevea brasiliensis) e bambu (Dendrocalamus giganteus) foi utilizado o adesivo à base de resorcinol-formaldeído (RF) com gramatura de 350 g.cm-2 por linha dupla de cola. As lâminas foram prensadas a frio sob pressão de 1MPa em temperatura ambiente durante o período de 24 horas. Foram adotados três tratamentos com base nas espécies: 1) lamelas de eucalipto; 2) lamelas de seringueira; 3) lamelas de bambu. Avaliou-se as propriedades densidade aparente, teor de umidade, absorção de água, flexão estática módulo de elasticidade (MOE) e módulo de ruptura (MOR) paralelo e perpendicular e resistência ao cisalhamento na linha de cola. Os resultados da análise química indicaram maior teor de extrativos e lignina para o eucalipto. O bambu foi o que apresentou maior densidade, diferindo-se significativamente das demais. Os painéis MLCC de seringueira evidenciaram menor teor de umidade e maior taxa de absorção de água. Para a propriedade MOE paralelo, os painéis MLCC de seringueira evidenciaram maior valor médio enquanto o MOR perpendicular dos painéis de bambu demonstraram maior valor médio. Para a resistência ao cisalhamento na linha de cola, todos os tratamentos avaliados atenderam aos requisitos normativos da EN-314-2 (1993). Dentre as espécies analisadas recomenda-se o bambu, que demonstrou grande potencial para a fabricação de MLCC além de representar uma opção sustentável para o futuro.

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Potential of rubberwood (Hevea brasiliensis) for structural use after the period of latex extraction: a case study in Brazil

Cited by 34 publications

References 15 publications

Properties of Young Guapuruvu (Schizolobium parahyba) Wood from a Forest Recovery Area

Properties of Young Guapuruvu (Schizolobium parahyba) Wood from a Forest Recovery Area

Comparison between growth performance in two silvopastoral systems comprising trees, short-lived perennial shrub, a forage, and livestock)

Desempenho de painéis de madeira laminada colada cruzada constituídos com eucalipto, seringueira e bambu

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