Propriedades físico-mecânicas da madeira de canafístula aos 10 anos de idade

Vivian, Magnos Alan; Modes, Karina Soares; Beltrame, Rafael; Souza, Joel Telles de; Santini, Élio José; Haselein, Clóvis Roberto

doi:10.1590/s0103-84782010005000086

Cited by 7 publications

(6 citation statements)

References 2 publications

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“…Tal comportamento influencia significativamente a densidade da madeira e, consequentemente, suas propriedades físicas e mecânicas. De acordo com Serpa et al (2003) e Vivian et al (2010), para obtenção de madeiras mais estáveis dimensionalmente e com maior resistência mecânica, é essencial que sejam utilizadas árvores com idades mais avançadas e com produção de madeira adulta. Segundo estes autores, escolhas como esta possibilitam a obtenção de um material de melhor qualidade para fins estruturais.…”

Section: Resultados E Discussão Composição Florísticaunclassified

Qualidade da madeira juvenil de um híbrido clonal (Eucalyptus grandis x Eucalyptus urophylla – H13)

Serenine

Melo

Castro³

et al. 2019

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Resumo O gênero Eucalyptus incluem diversas espécies importantes para a silvicultura florestal do Brasil. Além dessas, os híbridos de Eucalyptus spp. vem apresentando elevado potencial para uso estrutural, porém muitas de suas propriedades ainda são desconhecidas, em especial de madeiras oriundas de árvores mais jovens. Logo, a caracterização tecnológica da sua madeira é de grande importância. O objetivo desse trabalho foi avaliar as propriedades tecnológicas da madeira de um híbrido clonal (Eucalyptus grandis x Eucalyptus urophylla) com cinco anos de idade, plantado na região norte do estado de Mato Grosso. Para isso foram coletadas 10 árvores, sendo retirados oito corpos de prova de cada indivíduo, as quais foram avaliadas suas propriedades físicas e mecânicas. Concluiu-se que o híbrido clonal estudado se enquadra dentro da classe C40 da norma brasileira regulamentadora de estruturas de madeiras. Palavras-chave: Tecnologia da madeira, Compressão paralela, Caracterização simplificada.

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Section: Resultados E Discussão Composição Florísticaunclassified

Qualidade da madeira juvenil de um híbrido clonal (Eucalyptus grandis x Eucalyptus urophylla – H13)

Serenine

Melo

Castro³

et al. 2019

ADV. FOR. SCI.

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“…(canafistula), a legume with wide geographic distribution, and undemanding in fertility and soil moisture, potentially associated with atmospheric nitrogen-fixing bacteria, which improves and recovers soil fertility (Carvalho, 2003). According to Carvalho (2003) and Vivian et al (2010), this is a fast-growing tree species, and it can be used to reforest degraded areas, landscaping, civil construction and carpentry.…”

Section: Introduction and Objectivesmentioning

confidence: 99%

Substrates and Container Size on Quality of Peltophorum dubium Seedlings

et al. 2020

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This study aims to evaluate the effect of substrates and container content on growth and quality of Peltophorum dubium seedlings. The design was completely randomized in a factorial arrangement (2 × 9), with two containers sizes (125 cm 3 and 280 cm 3 ) and nine substrates formulated from the mixture of subsoil (S), vermicompost (V) and commercial substrate (CS), in the following proportions (v:v): S 100 , V 100 , CS 100 , S 75 + V 25 , S 50 + V 50 , S 25 + V 75 , CS 75 + V 25 , CS 50 + V 50 and CS 25 + V 75 , with nine replicates. We assessed seedling height, stem diameter, root and shoot dry matter, height/shoot dry matter ratio; Dickson quality index; and percentages of nitrogen, phosphorous and potassium in the shoot. The use of the 125 cm 3 dibble tube containing 100% vermicompost allowed for higher quality of Peltophorum dubium seedlings.

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“…For timber building structures, the knowledge of physical and mechanical properties of wood are very important, for its rational use (CALIL JUNIOR;DIAS, 2003;CALIL JUNIOR;MOLINA, 2010;ANDRADE JUNIOR et al, 2014;LAHR et al, 2017a). The very purpose of wood characterization is to evaluate its possible use as a structural member (VIVIAN et al, 2010;GUO, 2016GUO, , 2017LAHR et al, 2017b). For this purpose, Brazilian Standard Code NBR 7190 (Associação Brasileira de Normas Técnicas (ABNT, 1997) presents all experimental procedures for the conduction of the testing of the specimens.…”

Section: Introductionmentioning

confidence: 99%

Physical and mechanical properties of Eucalyptus saligna wood for timber structures

et al. 2019

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Due to its great availability in planted forests in Brazil, Eucalyptus saligna appears as a good species to be exploited, in order to assist in the consumption of wood for construction purposes. The aim of this research was to determine the physical and mechanical properties of Eucalyptus saligna wood species for its use in civil construction. The evaluation was based on 16 physical and mechanical properties obtained according to NBR 7190 (1997) standard. Two values of moisture content were considered: 30% (above the fiber saturation point) and 12% (equilibrium moisture content) according to NBR 7190 (1997). All obtained results obtained were statistically analyzed according to the t-test at the 5% level of significance. In addition, the characteristic strength properties were also determined, for batch classification in the strength classes recommended by the Brazilian standard. Eucalyptus saligna had an apparent density of 0.58 g/cm3 and a basic density of 0.73 g/cm3. The mechanical properties, presented fc0 and fc0,k equal to 46.80 and 32 MPa, respectively. The results indicated that Eucalyptus saligna wood can be used in the construction of timber structures as structural member

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Propriedades físico-mecânicas da madeira de canafístula aos 10 anos de idade

Abstract: IIIPropriedades físico-mecânicas da madeira de canafístula aos 10 anos de idade Physical COPANT 30:1:004 (1971) and 30:1-005 (1971), respectively, and the mechanical tests followed ASTM D 143-94 (2000) and NF B51-009 (1942

Cited by 7 publications

References 2 publications

Qualidade da madeira juvenil de um híbrido clonal (Eucalyptus grandis x Eucalyptus urophylla – H13)

Qualidade da madeira juvenil de um híbrido clonal (Eucalyptus grandis x Eucalyptus urophylla – H13)

Substrates and Container Size on Quality of Peltophorum dubium Seedlings

Physical and mechanical properties of Eucalyptus saligna wood for timber structures

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