Floresta e Ambiente
https://floram.org/article/doi/10.1590/2179-8087.033617
Floresta e Ambiente
Original Article Wood Science and Technology

Longitudinal and Transverse Variation in the Physical Properties of Wood Red Tauari

Gerson Kleber de Almeida Cruz; Nabor da Silveira Pio; Setsuo Iwakiri

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Abstract

ABSTRACT: The objective of this work was to study the fiber length variation, retractability and basic density, in the core-bark direction and along the heig of the red tauari wood (Cariniana micrantha Ducke). The stem was evaluated in the discs, from core to bark, corresponding to 0%, 25%, 50%, 75% and 100%. At the commercial height of the tree the evaluation was carried out in the Base, DBH, 50%, 75% and 100%. Three trees were collected and 5 discs of 12 cm of thickness were taken from each tree the heights: Base, DAP, 50%, 75% and 100%. Results indicated that the fiber length increases in the radial direction core-bark and decreases in the longitudinal direction, from base to top. The analysis of the basic density varied in the core-bark direction, with tendency to increase from the position of 50% (heartwood), then decreasing in the sapwood region. Total volumetric and linear contractions decreased in the core-bark direction.

Keywords

basic density, shrinkage, fiber

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