Variation throughout the tree stem in the physical-mechanical properties of the wood of Abies alba Mill. from the Spanish Pyrenees

González Rodrigo, Beatriz and García Esteban, Luis and Palacios de Palacios, Paloma de and Garcia Fernandez, Francisco and Guindeo Casasús, Antonio (2013). Variation throughout the tree stem in the physical-mechanical properties of the wood of Abies alba Mill. from the Spanish Pyrenees. "Madera y Bosques", v. 19 (n. 2); pp. 87-107. ISSN 1405-0471.

Description

Title: Variation throughout the tree stem in the physical-mechanical properties of the wood of Abies alba Mill. from the Spanish Pyrenees
Author/s:
  • González Rodrigo, Beatriz
  • García Esteban, Luis
  • Palacios de Palacios, Paloma de
  • Garcia Fernandez, Francisco
  • Guindeo Casasús, Antonio
Item Type: Article
Título de Revista/Publicación: Madera y Bosques
Date: 2013
Volume: 19
Subjects:
Freetext Keywords: Fir, longitudinal direction, mechanical properties, physical properties, radial direction
Faculty: E.U.I.T. Obras Públicas (UPM)
Department: Ingeniería Civil: Tecnología de la Construcción [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

This study analyses the variation of main physical-mechanical properties of wood along the longitudinal and radial directions of the tree for Abies alba Mill. growing in the Spanish Pyrenees. Small clear specimens were used to study the properties of volumetric shrinkage (VS), density (?), hardness (H), bending strength (MOR), modulus of elasticity (MOE), maximum compressive strength parallel to the grain (MCS) and impact strength (K). Several models of properties variation in the longitudinal and radial directions were analyzed. Main trends of variation of properties throughout the tree stem were identified although none of them could be fitted to predictive statistical models. Along the longitudinal direction, the properties studied followed a downward trend from the base to the crown, which was not significant in all cases, indicating that no differences in quality existed. Throughout the radial direction the trend is upward for the first 40-50 growth rings, after which it slopes downwards, more gently at first until rings 70-75 and then more steeply. This behaviour is related to variation in wood structure from the pith to the bark, depending on whether the wood is juvenile, sapwood or heartwood, and to wood maturity and microfibril angle. Authors encourage carrying further studies on other populations of A. alba in the Spanish Pyrenees to check if the trends found in this study apply to other provenances.

More information

Item ID: 26839
DC Identifier: http://oa.upm.es/26839/
OAI Identifier: oai:oa.upm.es:26839
Official URL: http://www1.inecol.edu.mx/myb/resumeness/19.2/myb19287107.pdf
Deposited by: Memoria Investigacion
Deposited on: 17 May 2015 07:57
Last Modified: 17 May 2015 07:57
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