PHYSICAL-MECHANICAL CHARACTERIZATION OF THE WOOD OF Plathymenia reticulata BENTH (VINEYARD-OF-FIELD) NATIVE SPECIES OF THE CERRADO OF THE STATE OF TOCANTINS

Raquel Marchesan,André Ferreira Dos Santos,Raydel Lorenzo Reinaldo,Lucas Alves Ferreira Souza,André Orathes Do Rego Barros,Rodrigo Araújo Fortes

doi:10.5380/rf.v51i1.68591

Raquel Marchesan, André Ferreira Dos Santos + Show 4 more

Open Access

https://doi.org/10.5380/rf.v51i1.68591

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Abstract

Physical-Mechanical Characterization of the Wood of Plathymenia reticulata Benth (Vinhático-do-campo) Species of the Cerrado Biome of the State of Tocantins. The objective of this work was to determine the physical and mechanical properties of Plathymenia reticulata Benth (vinhático-do-campo) wood to indicate its potential use. The wood used in the production of the specimens came from the municipality of Dueré – TO native forest. The basic density, wood retractability, and anisotropy coefficient were obtained from physical tests, and the values of axial compression and static flexion resistance from the mechanical tests. The values obtained showed that the Plathymenia reticulata Benth wood fits the C40 resistance classification for hardwoods, determined by the Brazilian Standard (NBR7190). The average value of the basic density found was 0.64 g cm-3, classified as a medium density wood and the values of tangential, radial and volumetric retractability were 6.11%, 3.06%, 9.39 %, respectively. As for its mechanical characteristics, it presented average values of compressive strength parallel to the fibers, resistance to static flexion, and elastic modulus equal to 58.8MPa, 128.2 MPa, and 12760.0MPa, respectively. The vinhático-do-campo wood can be classified as stable wood and its physical characteristics suggest a normal quality. The species can be applied in light and heavy construction.

Highlights

According to the Brazilian Forest Service (SFB) (2010), Brazil has one-third of the tropical forests in the world, standing out as one of the main producers of wood
Plathymenia reticulata Benth is among these species, belonging to the Leguminosae family, subfamily Caesalpinoideae, and popularly known as vinhático-do-campo, a native species of the cerrado biome (L.P.W.G., 2017)
In a study by Machado Neto et al (2015), the authors found for Plathymenia reticulata Benth the average value of basic density of 0.52 g cm-3, showing to be lower than the average value found in the present work for the same species

Summary

Introduction

According to the Brazilian Forest Service (SFB) (2010), Brazil has one-third of the tropical forests in the world, standing out as one of the main producers of wood. Most of its territorial extension, approximately 516 million hectares (60.7% of its territory), is formed by natural and planted forests, which makes the country the second largest forest area in the world, only behind Russia. The Cerrado is the second largest Brazilian biome in extension, with about 204 million hectares, occupying approximately 24% of the national territory, it plays a fundamental role in the process of distribution of water resources across the country (LIMA, 2011). The native species of the cerrado biome have multiple uses, FLORESTA, Curitiba, PR, v. Plathymenia reticulata Benth is among these species, belonging to the Leguminosae family, subfamily Caesalpinoideae, and popularly known as vinhático-do-campo, a native species of the cerrado biome (L.P.W.G., 2017)

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