Variación radial y axial del hinchamiento, del factor anisotrópico y de la densidad, en el eucalyptus grandis de Argentina
Date
2006
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Abstract
En este trabajo se presentan los resultados de una investigación orientada a estudiar la variación de los hinchamientos tangencial y radial, así como del coeficiente de anisotropía y la densidad anhidra, en
función de la altura y la distancia a la médula de árboles de Eucalyptus grandis cultivados en la
Mesopotamia de Argentina. Con este propósito se diseñó y llevó a cabo una investigación empírica con
muestras seleccionadas al azar. Los resultados muestran que, para propósitos prácticos, puede asumirse
que el hinchamiento y el coeficiente de anisotropía tienen una tendencia decreciente al aumentar la
altura, y creciente al aumentar la distancia a la médula. La madera de la periferia exhibe un comportamiento más desfavorable desde el punto de vista de los movimientos dimensionales que la del interior del tronco, si bien presenta mayor densidad y consecuentemente mejor calidad para numerosos empleos.
The present paper reports the results of an investigation regarding the variation in swelling, coefficient of anisotropy and density, as a function of the distance from the pith and the height, in trees of Argentinean Eucalyptus grandis. For this purpose an empirical research project with samples randomly selected was designed and carried out. According to the results and for practical purposes, it may be assumed that swelling and the coefficient of anisotropy decrease with height and increase with the distance from the pith. Wood of the outer part of the tree stem exhibits more problems related to dimensional changes than wood of the inner part of the tree stem, even though it presents higher density and, consequently, higher quality for many purposes.
The present paper reports the results of an investigation regarding the variation in swelling, coefficient of anisotropy and density, as a function of the distance from the pith and the height, in trees of Argentinean Eucalyptus grandis. For this purpose an empirical research project with samples randomly selected was designed and carried out. According to the results and for practical purposes, it may be assumed that swelling and the coefficient of anisotropy decrease with height and increase with the distance from the pith. Wood of the outer part of the tree stem exhibits more problems related to dimensional changes than wood of the inner part of the tree stem, even though it presents higher density and, consequently, higher quality for many purposes.
Description
Keywords
Eucalyptus grandis, Hinchamiento, Densidad, Coeficiente de anisotropía, Swelling, Coefficient of anisotropy, Density
Citation
Maderas. Ciencia y tecnología. 8 (3):159-168 (2006)
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