Characterization of Eucalyptus maidenii Timber for Structural Application: Physical and Mechanical Properties at Two Moisture Conditions

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

doi:10.15177/seefor.18-10

Cited by 5 publications

(3 citation statements)

References 21 publications

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“…Comparing these results to ones found to Eucalyptus umbra (NOGUEIRA et al, 2018a), Eucalyptus camaldulensis (NOGUEIRA et al, 2018b), Eucalyptus maidenii (NOGUEIRA et al, 2018c), and Eucalyptus urophylla (LAHR et al, 2017), the Eucalyptus tereticornis timber is efficient from the structural point of view (Tables 3 to 5), being interesting for heavy and light buildings and rural uses due to result similarities. In addition, this study reinforced that tereticornis species could be useful in these purposes, testifying Gutiérrez (1976) and Boland et al (2006) similar affirmations from their eucalypt "encyclopedic studies", despite their non-specification of any numerical value for Eucalyptus tereticornis mechanical properties.…”

Section: Discussionmentioning

confidence: 54%

Sixteen properties of Eucalyptus Tereticornis wood for structural uses

et al. 2020

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Forest Red Gum eucalypt provides a versatile wood and is converted into different purposes. However, such wood is somewhat limited in structural ends, which highlights the need to exploit this gap through diffusion of mechanical properties of such timber. Obtained results should assist engineers and architects in decision-making for its best building application. This paper studied two physical and fourteen mechanical properties evaluation of Eucalyptus tereticornis at two different moisture contents, following the prescriptions of Brazilian (ABNT NBR 7190: 1997) and North American (ASTM D-143-14: 2014) standard documents. Thus, 1091 repeats were carried out for all properties. By a moisture reduction from 30% to 12%, the bulk density and eleven strength properties statistically showed changes such as modulus of rupture (static bending, parallel and perpendicular compressions), modulus of elasticity (perpendicular compression and static bending), shear stress, tangential cleavage, and parallel and perpendicular hardnesses. Then, the Eucalyptus tereticornis timber could be better usable if is further applied for structural construction uses.

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Section: Discussionmentioning

confidence: 54%

Sixteen properties of Eucalyptus Tereticornis wood for structural uses

et al. 2020

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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: 62%

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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“…Eventually, Lahr et al (2018) found that mechanical properties were significantly affected by moisture content, and the behavior pattern consisted in increasing the values of the properties with reduction of moisture content. Other researchers also investigated Eucalyptus saligna (Nogueira et al 2019) and Eucalyptus maidenii wood's properties in abovementioned moisture contents (Nogueira et al 2018). In another study, pine (Pinus sylvestris) and beech (Fagus sylvatica) woods were subjected to steam kiln-drying.…”

Section: Introductionmentioning

confidence: 99%

Influences of different drying climates on Eucalyptus camaldulensis wood properties

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et al. 2021

Maderas, Cienc. tecnol.

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One of the most important disadvantages of the wood material, whose usage is becoming more and more widespread, is the dimensional instability that occurs in its interaction with water. Therefore, studies to improve these drawbacks of wood, remain always up to date. For the mentioned purpose in this study, some chemical, morphological, physical and mechanical properties of Eucalyptus camaldulensis woods, which were naturally dried in outdoor and indoor climate in Eastern Mediterranean (Kahramanmaraş province) atmosphere conditions of Turkey, were investigated. According to the results of the study, chemical properties of Eucalyptus woods dried indoor were measured as merely 0,23 % higher than dried ones outdoor. The results of morphological measurements indicated that the fiber dimensions of eucalypt wood dried in indoor were average 1,48 % lower than the ones dried out outdoor. Also, as a result of statistical analysis, it was found that there were significant differences (ρ < 0,000) between the physical properties of Eucalyptus wood samples indoor and outdoor according to the t-test. At the same time, as a result of the t-test applied to determine the effect of drying conditions on mechanical properties of Eucalyptus wood, modulus of elasticity, compression, tensile, dynamic bending and shear strength did not cause any significant difference between indoor and outdoor, while bending and Janka hardness strengths showed significant differences at ρ < 0,000 level. Finally, when the data obtained as a whole is considered, it can be said that testing of Eucalyptus wood which requires a very sensitive drying in different climates has important contributions on the subject. Regarding eucalypts, which has a high distribution area (20 million hectares) in the world, it is recommended to relevant institutions and organizations to expand and maintain such study in the future. Lastly, according to obtained data from this study, it can be said that the experiments of Eucalyptus woods which require a very delicate drying in different environments provide important contributions on the subject.

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Characterization of Eucalyptus maidenii Timber for Structural Application: Physical and Mechanical Properties at Two Moisture Conditions

Cited by 5 publications

References 21 publications

Sixteen properties of Eucalyptus Tereticornis wood for structural uses

Sixteen properties of Eucalyptus Tereticornis wood for structural uses

Evaluation of Eucalyptus microcorys wood properties

Influences of different drying climates on Eucalyptus camaldulensis wood properties

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