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Ciência Florestal

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

Resumo

HASELEIN, Clovis Roberto; CECHIN, Emerson; SANTINI, Elio José  e  GATTO, Darci Alberto. WOOD CHARACTERISTICS OF PLANTATION SLASH PINE AT AGE 30. Ciênc. Florest. [online]. 2000, vol.10, n.2, pp.135-144. ISSN 1980-5098.  https://doi.org/10.5902/19805098487.

In this study, six trees from a 30 years slash pine stand were harvested. The stumps were converted into 2,5 m logs and the two first were processed into pith centered cants. After airseasoning, the cants were transformed into small clear static bending specimens according to ASTM D143-93 (1995). Samples were taken near the pith and the bark. Bending stiffness (MOE) and strength (MOR) and basic density measured at 12% moisture content were related to the number of growth rings and percentage summer wood determined at every specimen cross-section. Significant differences were found between radial positions. In general, larger increase in properties of the juvenal wood as a function of the increase of the growth rings and percent summer wood were observed.

Palavras-chave : slash pine; static bending; summer wood; growth rings.

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