Strength and stiffness of the reaction wood in five Eucalyptus species
-
Bruno Charles Dias Soares
,
José Tarcísio Lima
Abstract
Tree stems deviating from the vertical position react by the formation of tension wood (TW) or compression wood (CW), which are called in general as reaction wood (RW), in which the cells are modified chemically and anatomically. The focus of the present work is the mechanical behavior of TW in five 37-year-old Eucalyptus species, which were grown on a planting area with an average slope of 28% leading to decentralized pith in the trees, which is an unequivocal indication of the presence of RW. TW and opposite wood (OW) samples were isolated and subjected to a compression-parallel-to-grain test. It was observed that TW is less resistant and less stiff than the OW.
Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
Research funding: The authors are grateful to CAPES and CNPq (Process 311574/2013-0) for the grants and financial support during this work. This study was supported by Ministério da Ciência, Tecnologia e Inovação Conselho Nacional de Desenvolvimento Científico e Tecnológico, Funder Id: 10.13039/501100003593 (ref. no. 311574/2013-0) and Coordenação de Aperfeiçoamento de Pessoal de Nível Superior.
Employment or leadership: None declared.
Honorarium: None declared.
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©2019 Walter de Gruyter GmbH, Berlin/Boston
Artikel in diesem Heft
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- Short Note
- Strength and stiffness of the reaction wood in five Eucalyptus species
Artikel in diesem Heft
- Frontmatter
- Original Articles
- Cutting forces and chip formation revisited based on orthogonal cutting of Scots pine
- Predicting structural timber grade-determining properties using acoustic and density measurements on young Sitka spruce trees and logs
- Natural resistance of eight Brazilian wood species from the region Caatinga determined by an accelerated laboratory decay test against four fungi
- Understanding the effect of weathering on adhesive bonds for wood composites using digital image correlation (DIC)
- Time-dependent ammonia emissions from fumed oak wood determined by micro-chamber/thermal extractor (μCTE) and FTIR-ATR spectroscopy
- Rheology of moso bamboo stem determined by DMA in ethylene glycol
- Carbon nanomaterials based on interpolyelectrolyte complex lignosulfonate-chitosan
- Radical transfer system in the enzymatic dehydrogenative polymerization (DHP formation) of coniferyl alcohol (CA) and three dilignols
- The gene expression and enzymatic activity of pinoresinol-lariciresinol reductase during wood formation in Taiwania cryptomerioides Hayata
- Applicability of chloroplast DNA barcodes for wood identification between Santalum album and its adulterants
- Short Note
- Strength and stiffness of the reaction wood in five Eucalyptus species
