Sixteen properties of Eucalyptus Tereticornis wood for structural uses

Abstract

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.

The Prospect of Physiological Events Associated with the Micropropagation of Eucalyptus sp.

“…Reactive oxygen species (ROS) is a chemical defence mechanism against different stresses [3,104,105]. Respiratory burst oxidase homologue (rboh) gene, which is the main sources of ROS formation in plants, encoded membrane-localized NADPH oxidases.…”

“…It is also associated with various physiological processes such as enzymatic activation, reactions with plant growth regulators, ion uptake, and membrane function and structure [142]. In some plant species, increase in cytoplasmic calcium levels influenced embryogenic responses [3].…”

“…Eucalyptus (family Myrtaceae) is a large genus of fast-growing evergreen trees and ornamental shrubs with more than 900 species, native to Australia, Indonesia, India, Portugal, South Africa, Brazil, Chile, and France [1]. The economic importance and commercial value of Eucalyptus have long been considered in many parts of the world due to its hard timber, resistance to biotic stresses, rapid growth, and high profitability [2][3][4].…”

“…Forests 2020, 11, x FOR PEER REVIEW 2 of 27 been considered in many parts of the world due to its hard timber, resistance to biotic stresses, rapid growth, and high profitability [2][3][4]. Furthermore, increasing global demand for timber, pulp, and paper products has significantly changed the plantation culture of Eucalyptus species all over the world [5].…”

Evaluation of Eucalyptus microcorys wood properties

“…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). These efficient values regarding the mechanical properties evinced that Eucalyptus microcorys wood species has decent resistance for structural parts (Tables 3 to 5), being suitable for construction applicability.…”