Características estruturais da madeira de pinus elliottii Engelm aos 30 anos de idade
In this study, six trees from a 30 year 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)....
| Main Authors: | , , , |
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| Format: | Article |
| Language: | Portuguese |
| Published: |
Universidade Federal de Santa Maria
2000-01-01
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| Series: | Ciência Florestal |
| Online Access: | http://www.redalyc.org/articulo.oa?id=53400211 |
| Summary: | In this study, six trees from a 30 year 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. |
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| ISSN: | 0103-9954 1980-5098 |