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vol.11 número1CREEP BEHAVIOR OF BORATE-TREATED STRANDBOARD: EFFECT OF ZINC BORATE RETENTION, WOOD SPECIES, AND LOAD LEVEL índice de autoresíndice de materiabúsqueda de artículos
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Maderas. Ciencia y tecnología

versión On-line ISSN 0718-221X

Resumen

IGARTUA, Dora Virginia; MONTEOLIVA, Silvia  y  PITER, Juan Carlos. STUDY OF SOME PHYSICAL PROPERTIES OF ARGENTINEAN Acacia melanoxylon R. Br. Maderas, Cienc. tecnol. [online]. 2009, vol.11, n.1, pp.03-18. ISSN 0718-221X.  http://dx.doi.org/10.4067/S0718-221X2009000100001.

The aim of this research was to determine density, maximal swelling and shrinkage, anisotropy of swelling and shrinkage and fibre saturation point on samples of Argentinean Acacia melanoxylon R Br. Ten trees were randomly selected from two sites located in Buenos Aires Province and samples were obtained at breast height. Physical properties were determined according to the Argentinean standards IRAM 9532(1963), 9543(1966) y 9544(1973). Data were analysed by means of the analysis of variance according to a mixed linear model. Mean values of the coefficient of lineal shrinkage reached 0.16 and 0.30 for radial and tangential directions, respectively. Mean values for fibre saturation point was 24.7 % and the factor of anisotropy was close to 2, which indicates that this species may normally perform drying processes. Site was not significant for physical properties but highly significant differences were found between trees. Tree variance component reached 29.8-46.5 % of the total random variation. The mean value for density reached 604 Kg/m3 and this property increases with the distance from the pith. The values found for the analysed properties are congruent with those reported for the same species by other researchers. No significant correlation was found between density and dimensional changes.

Palabras clave : Wood properties; density; moisture content; shrinkage; factor of anisotropy.

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