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Characterization of physical and mechanical properties of eucalyptus lumber with different specific gravities

The objective of the present work was to characterize a lot of Eucalyptus wood marketed by a Brazilian forest company. In this work, Eucalyptus wood, probably E. grandis W. Hill ex Maiden, was purchased in the local market in the air-dry condition. The whole lot was subdivided in two sub-lots; one with heavier wood, the other with lighter. The reason for this was that the shipment arrived with boards having notable differences in weight. Test-specimens were prepared from boards taken from each sub-lot. The characterization was therefore carried out in twice as many test-specimens as required by Brazilian standards, as described in the NBR 7190 (1997) standard. The tests showed the existence of two board populations with significantly different mechanical properties.

Lumber; specific gravity; NBR 7190


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