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Maderas. Ciencia y tecnología

versión On-line ISSN 0718-221X

Resumen

RAMIREZ V, Mauricio; VALENZUELA H, Luis  y  DIAZ S, Cristian. BENDING MECHABICAL PROPERTIES OF Pinus radiata WOOD, GROWING IN A SILVOPASTORAL SYSTEM: I: ELASTICITY AND STRENGHT. Maderas, Cienc. tecnol. [online]. 2001, vol.3, n.1-2, pp.35-43. ISSN 0718-221X.  http://dx.doi.org/10.4067/S0718-221X2001000100004.

The effects of fertilization frequency and two stem heights on elasticity and strength in static bending (modulus of elasticity, stress at proportional limit and modulus of rupture) of Pinus radiata wood, growing in a silvopastoral system were evaluated. Twenty-seven trees were selected from three silvopastoral trials (nine trees per treatment) established at "Tanumé" Experimental Center. Destructive static bending test were realized according to ASTM D 143-94, the analysis of the variables was carried out using a nested design and the effects of variables were evaluated by analysis of variance (ANOVA). According to the results, the fertilization frequency on the different physical and mechanical parameters that were evaluated did not have a significant effect. However, stem height had a significant effect on stress at proportional limit and modulus of rupture due to different average values of annual ring width and nominal density found at two different heights of the stem tree

Palabras clave : Modulus of elasticity; modulus of rupture; silvopastoral; fertilization; Pinus radiata.

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