Anatomical properties of Eucalyptus grandis wood and transition age between the juvenile and mature woods

Palermo, Gilmara Pires de Moura; Latorraca, João Vicente de Figueiredo; Carvalho, Alexandre Monteiro de; Calonego, Fred Willians; Severo, E. T. D.

doi:10.1007/s00107-015-0947-4

Cited by 38 publications

(31 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Present results showed that the slenderness ratio of the four pioneer species is in the range of 36.4-50.2. This result is comparable to the study for Eucalyptus grandis, as shown in Table 1, which ranges from 42.6 to 59.8 [22]. Batai, ludai, mahang, and sesendok also show thin fibre wall and large fibre lumen diameter which, according to [5] this features, contributes to the good adhesive penetration.…”

Section: Anatomical Propertiessupporting

confidence: 86%

Anatomical, physical, and mechanical properties of four pioneer species in Malaysia

et al. 2020

View full text Add to dashboard Cite

The purpose of this study is to evaluate the anatomical, physical, and mechanical properties of four pioneer species, i.e., batai (Paraserianthes moluccana), ludai (Sapium baccatum), mahang (Macaranga gigantea), and sesendok (Endospermum malaccense). Correlation of factors influencing density, shrinkage, and mechanical properties were also discussed. Samples were obtained from the Forest Research Institute Malaysia (FRIM) campus. From the result obtained, these four pioneer species characterised by medium-to-large vessel with absent of tyloses and gum deposit, fine ray, thin walled fibre, runkel ratio less than 1.0, low in density, and mechanical properties. Sesendok has significantly higher value in fibre length, fibre diameter, fibre lumen diameter, fibre wall thickness, vessel diameter, density, MOR, MOE, compression parallel to grain, and shear parallel to grain compared to the other three pioneer species which were 2001 µm, 45 µm, 35 µm, 5.1 µm, 300 µm, 514 kg/m 3 , 79.5 N/mm 2 , 9209 N/mm 2 , 38.7 N/mm 2 , and 10.1 N/mm 2 , respectively. Between these four pioneer species, ludai has significantly higher in runkel ratio which was 0.57, whereas mahang shows significantly higher in slenderness ratio and number of vessels/mm 2 which were 50.2 and 5 vessel/mm 2 , respectively. On the other hand, batai has higher tangential, radial and longitudinal shrinkage compared to ludai, mahang, and sesendok which were 3.0%, 2.4%, and 0.8%, respectively. Based on the basic property study, batai, ludai, mahang, and sesendok could be suitable for pulp and paper, plywood, light construction, furniture, interior finishing, and general utility. Fibre length, fibre wall thickness, and vessel diameter correlated significantly with density and mechanical properties. Shrinkage and mechanical properties were significantly influenced by density.

show abstract

Section: Anatomical Propertiessupporting

confidence: 86%

Anatomical, physical, and mechanical properties of four pioneer species in Malaysia

et al. 2020

View full text Add to dashboard Cite

show abstract

“…These differences during tree development will reflect in the formation of wood with different properties, which differentiate the juvenile and adult wood. In species of rapid growth, such as some members in the genus Eucalyptus, such differences may be more evident due to the more accelerated growth rate that marks the juvenile wood formation period (FANG;YANG, 2003;LEAL et al, 2003;RAMÍREZ et al, 2009;PALERMO et al, 2015 ). For., Piracicaba, v. 44, n. 111, p. 611-621, set.…”

Section: Evaluated Propertiesmentioning

confidence: 99%

“…The juvenile wood, produced in the first years of growth of the tree, differs from the mature wood, especially for presenting greater magnitude of variation in its technological properties, notably marked by sudden changes in cellular composition (ZOBEL;VAN BUIJTENEN, 1989;BAO et al, 2001;CALONEGO et al, 2005;PALERMO et al, 2015) and this almost always has a negative effect on the wood quality. Tsuchiya and Furukawa (2009), Fan et al (2009) and Apiolaza et al (2013) emphasize that studies that evaluate the radial and axial variation in the trunk, besides enabling an understanding of the architecture adopted by different species to make water transport become efficient and secure, demonstrate extreme commercial importance, because from the results it is possible to predict which raw material is commercially the most indicated for a particular application.…”

Section: Introductionmentioning

confidence: 99%

Influence of genetic material and radial position on the anatomical structure and basic density of wood from Eucalyptus spp. and Corymbia citriodora

Melo¹,

Silva²,

Napoli³

et al. 2016

Sci. For.

View full text Add to dashboard Cite

O objetivo deste trabalho foi avaliar o efeito do material genético e da variabilidade radial na estrutura anatômica e densidade básica das madeiras de Eucalyptus sp. e Corymbia citriodora e também verificar a influência da anatomia sobre a densidade básica da madeira. Foram estudados dois híbridos naturais de Eucalyptus urophylla e a espécie Corymbia citriodora, sendo três árvores amostradas por material genético, e todos os plantios localizados no estado de Minas Gerais, Brasil. Retiraram-se nove discos (um de cada árvore) a 1,30 m do solo e a partir destes foram obtidos corpos de prova devidamente orientados da medula em direção à casca, para a determinação da anatomia e densidade básica da madeira, entre os materiais genéticos e as posições radiais. Comparativamente aos híbridos a espécie C. citriodora, apresentou valores superiores de espessura, fração parede e porção de parede das fibras e também densidade básica. A espécie também apresentou variação radial menos acentuada da estrutura anatômica, maior uniformidade da madeira no sentido medula-casca, características importantes para fins de madeira serrada e secagem, dentre outras aplicações que requerem mais homogeneidade da matéria prima. A fração parede e a porção de parede das fibras foram os parâmetros anatômicos que melhor explicaram a variação radial da densidade básica.

show abstract

“…The definition of the age at which the species makes the transition from juvenile wood to adult wood has been evaluated in several studies (Bal & Bektas, 2013, Palermo et al, 2015, Zanuncio et al, 2017. Evidently, adult wood is the aim of study of this research.…”

Section: Introductionmentioning

confidence: 99%

WOOD UTILIZATION OF Eucalyptus grandis IN STRUCTURAL ELEMENTS: DENSITIES AND MECHANICAL PROPERTIES

Lahr

Nogueira

Araújo³

et al. 2018

Eng. Agríc.

View full text Add to dashboard Cite

Over the years, the species of eucalyptus has become a multipurpose raw material. In addition, the most relevant aspect of the use for various purposes is related to the production of a high quality wood, coming from short duration plantations, which is fundamental to the current demand of the industries. However, its use in civil construction has not yet reached a level of importance, due to the low knowledge of many of its resistance properties and the consequent popular fear in the use of reforestation woods, in particular the Eucalyptus grandis. This research investigated its main mechanical properties, aiming to reinforce its constructive applications in wood structures. For this, two physical properties and fourteen mechanical properties, in two different moisture conditions of the samples were evaluated, according to the norm NBR 7190 (1997). In the first moisture content, the samples were stabilized at 30%, while the second level considered the content of 12%. It was obtained 3580 determinations for the sixteen properties. From the 14 mechanical properties, only 7 had significant increases with the moisture reduction (30% to 12%), consisting of the rupture modulus in the parallel and normal compressions, normal traction and static bending; modulus of elasticity in normal compression and static bending and in shear strength.

show abstract

Anatomical properties of Eucalyptus grandis wood and transition age between the juvenile and mature woods

Cited by 38 publications

References 7 publications

Anatomical, physical, and mechanical properties of four pioneer species in Malaysia

Anatomical, physical, and mechanical properties of four pioneer species in Malaysia

Influence of genetic material and radial position on the anatomical structure and basic density of wood from Eucalyptus spp. and Corymbia citriodora

WOOD UTILIZATION OF Eucalyptus grandis IN STRUCTURAL ELEMENTS: DENSITIES AND MECHANICAL PROPERTIES

Contact Info

Product

Resources

About