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vol.10 número1UTILIZAÇÃO DE EXTENSORES ALTERNATIVOS NA PRODUÇÃO DE COMPENSADOS MULTILAMINADOSANÁLISE DENDROECOLÓGICA DE Ocotea pulchella Nees et Mart. ex Nees (CANELA LAGEANA) NA SERRA GERAL DE SANTA MARIA, RS, BRASIL índice de autoresíndice de assuntospesquisa de artigos
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Ciência Florestal

versão impressa ISSN 0103-9954versão On-line ISSN 1980-5098

Resumo

SANTINI, Elio José; HASELEIN, Clóvis Roberto  e  GATTO, Darci Alberto. COMPARATIVE ANALYSIS OF PHYSICAL AND MECHANICAL PROPERTIES OF WOOD FROM THREE PLANTATION SOFTWOODS. Ciênc. Florest. [online]. 2000, vol.10, n.1, pp.85-93. ISSN 1980-5098.  http://dx.doi.org/10.5902/19805098397.

Woods from plantation stands of parana, slash and loblolly pines, thinned at least once, were tested with the objective of comparing physical and mechanical properties. Five threes from each specie were harvested from selected stands. The stems were bucked into logs and then transported to the sawmill cooperating in this study. The logs were processed into planks, which were air seasoned, and then cut into pieces according to ASTM standards. Although the average strength of parana pine was slightly larger than the two other pines, significant differences were found only in the tests of static bending (modulus of elasticity and tension at the proportional limit), compression parallel to the grain (maximum crushing strength, modulus of elasticity and tension at the proportional limit) and hardness (cross-section). The properties were not different for slash and loblolly pines, except in tension perpendicular to the grain, where the strength of loblolly pine was higher than the others. No differences were found for specific gravity and shrinkage among the species.

Palavras-chave : Wood properties; parana pine; slash pine; loblolly pine.

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