Caracterización físico-mecánica de la madera de Eucalyptus camaldulensis para uso estructural proveniente de Restinga, Brasil

Nogueira, Marta Cristina Jesus Albuquerque; Araújo, Victor Almeida De; Vasconcelos, Juliano Souza; Gutiérrez-Aguilar, Carlos Mario; Cruz, José Nilton da; Vasconcelos, Julio Cezar Souza; Prataviera, Fábio; Christofóro, André Luis; Lahr, Francisco Antônio Rocco

doi:10.21704/rfp.v33i1.1155

Cited by 5 publications

(2 citation statements)

References 33 publications

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“…Eucalyptus microcorys was mechanically superior to some eucalypts evaluated in other wood characterization studies, for example, alba (Nogueira et al, 2019b), camaldulensis (Nogueira et al, 2018c), grandis (Lahr et al, 2018), maidenii (Nogueira et al, 2018b), saligna (Nogueira et al, 2019a), umbra (Nogueira et al, 2018a), and urophylla (Lahr et al, 2017). Still, this wood species reached performances similar to tereticornis variety studied by Nogueira et al, (2020).…”

Section: Resultsmentioning

confidence: 61%

Evaluation of Eucalyptus microcorys wood properties

et al. 2021

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Eucalypt varieties have been identified as multipurpose materials. With origins in those nations of Oceania, this genus has been applied for purposes such as pulp and paper, bioenergy, civil construction, and furniture. Very suitable as firewood and charcoal, Eucalyptus microcorys would have good potentialities as structural solutions for construction. But, this wood species is not easily found as building parts in the Brazilian market. This paper aimed to develop a broad evaluation of this species to highlight their features for the utilization as structural lumber. Based on the Brazilian standard document on wooden structures, sixteen properties were evaluated to emphasize such potentialities. Using two moisture contents, these conditions were adopted to identify each wood property at green and dried points. About 966 repeats were realized in these tests. Nine properties showed influences with the moisture reduction as well as perceptible increases in their resistances: static bending, parallel and perpendicular compressions, and parallel tensile in the modulus of rupture; perpendicular compression and parallel tensile in the modulus of elasticity; and, shear stress and hardness properties in parallel and perpendicular directions. Eucalyptus microcorys wood reached good resistance properties, justifying its potentiality for construction in structural uses.

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Section: Resultsmentioning

confidence: 61%

Evaluation of Eucalyptus microcorys wood properties

et al. 2021

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“…Wood density is another characteristic that influences the decomposition of organic matter and wood density is inverse to the decomposition rate. E. camaldulensis has a density of 0.71-0.83 kg dm -3 (Nogueira et al, 2018), while for Q. laeta it reaches 0.61-0.75 kg dm -3 (Ordóñez et al, 2015). Eucalyptus wood is denser and therefore takes longer to decompose.…”

Section: Falling Debrismentioning

confidence: 99%

Ecological Rehabilitation Indicators for One Eucalyptus Reforestation With an Oak Forest as Reference

Herrera-Ramos¹,

Jesús²,

Rodrı́guez-Trejo³

et al. 2022

agro

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The evaluation of reforestation for ecological restoration purposes in an area requires the comparison of similarity indicators with nearby reference forests. The objective of this study was to compare the vegetal composition, structure, falling debris, and their decomposition in the soil of a reforestation site of Eucalyptus camaldulensis Dehnh, planted more than 50 years ago, and a neighbouring forest dominated by Quercus deserticola Trel. and Q. laeta Liebm (used as reference), in an area of the State of Mexico; and obtain quantitative indicators of the trajectory of rehabilitation through the use of non-native species of Mexico. In reforestation and oak forest, we established 12 sampling sites where the composition, structure and two ecological processes (falling debris and decomposition) were determined. In addition, solar radiation was estimated by taking zenith photos of the canopy, using a hemispherical lens. When data was within normal distribution, we used the Student test, and when it was not, the Wilcoxon test was used to compare the variables studied. The reference forest outperformed reforestation (p ≤ 0.05) in: richness (68 and 50 species); diversity (Simpson index, 1.6-2.6 and 0.7-2.3); normal diameter (21.3 and 13.7 cm), accumulated leaf litter (18.2 and 9.2 Mg ha-1), detritus fall (0.606 and 0.321 Mg ha-1 per month), and litter decomposition (0.443 and 0.251 Mg ha-1 per month). Reforestation had a higher total radiation (5384 vs. 4376 MJ m-2 year-1) and tree height (8.1 vs. 7.4 m). The percentage values of importance were 32.8 and 26.9 % for Quercus deserticola and Q. laeta in the oak forest, and 70 % for E. camaldulensis in the reforestation. After 50 years, reforestation still showed statistical differences from forest in composition, structure, and soil processes.

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Evaluation ofEucalyptus trianthaTimber for Structural Applications

Nogueira¹,

Araújo²,

Vasconcelos³

et al. 2020

Silva Lusitana

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Eucalypt wood is an important raw material with multiple uses applied for furniture, pulp and paper, charcoal, biomass, and construction. Sixteen tests were performed to evaluate physical and mechanical properties of Eucalyptus triantha, which could estimate the possibility of utilization of this woody material in construction. In all, about 267 repeats were realized. Two moisture contents were regarded according to the Brazilian and American standard documents: fiber saturation point (30%) and standard dried point (12%). Results were statistically treated with t-test and demonstrated increases in six mechanical properties from Eucalyptus triantha wood species: rupture moduli in perpendicular and parallel compressions and static bending; elasticity moduli in parallel tensile, perpendicular compression, and static bending. Volumetric mass and bulk densities were practically stable. Physical and mechanical properties estimation evinced that Eucalyptus triantha wood can be used in structural elements.

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Caracterización físico-mecánica de la madera de Eucalyptus camaldulensis para uso estructural proveniente de Restinga, Brasil

Cited by 5 publications

References 33 publications

Evaluation of Eucalyptus microcorys wood properties

Evaluation of Eucalyptus microcorys wood properties

Ecological Rehabilitation Indicators for One Eucalyptus Reforestation With an Oak Forest as Reference

Evaluation ofEucalyptus trianthaTimber for Structural Applications

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