Abstract
This study provides up-to-date, representative values of the physical and mechanical properties of silver fir wood from the Spanish Pyrenees for comparison with other provenances and timber species. Tests were conducted with clear specimens obtained throughout the tree stem and properties were determined following the UNE standards of the corresponding tests. The wood was found to be light ( ρ = 0.48 g/cm 3 ), soft (H = 1.71 mm -1 ) and moderately stable (v = 39.43%). Its bending strength (MOR = 78.70 N/ mm 2 ) is low and its compressive strength (MCS = 44.88 N/mm 2 ) is average. Impact behaviour is average (K = 41.46 N/mm) and cleavage behaviour (C = 19.92 N/ mm) is low, as are tangential and radial tension perpendicular to the grain (1.71 and 1.68 N/mm 2 ). The differences obtained in comparison with other provenances of this species may be the result of the location of the silver firs at the edge of their geographical distribution and thus the specific conditions of the site have a greater effect on the wood properties.
Highlights
Mechanical characterization of wood involves determining a series of properties associated with its structural behaviour
Characterization with clear specimens makes it possible to determine the mechanical potential of wood and simulate behaviour in the presence of certain defects
As this type of specimen was widely used in earlier studies, a comparison can be made of the results obtained from the wood of various species and provenances
Summary
Mechanical characterization of wood involves determining a series of properties associated with its structural behaviour. It may be conducted using either full-size pieces or small clear specimens (small, defect-free, oriented test pieces). Characterization with clear specimens makes it possible to determine the mechanical potential of wood and simulate behaviour in the presence of certain defects. As this type of specimen was widely used in earlier studies, a comparison can be made of the results obtained from the wood of various species and provenances. The current protection level of forests of this species in the Iberian Peninsula has led to a decline in the use of silver fir timber
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