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| Trianoski, Rosilani; Matos, Jorge Luis Monteiro de; Iwakiri, Setsuo. |
| The Australian cedar (Toona ciliata M. Roem) is a species of high commercial value, with characteristics similar to native mahogany and cedar, which has been highlighted in forest plantations in Brazil, whose wood should be the subject of technological research. The objective of this study was to evaluate the physical, chemical and mechanical properties from planted stands of 18 years old. The wood showed low density (0.330 g cm3), low average dimensional stability (anisotropy: 2.22), high content of extractives (10.33%) and moderate mechanical properties: MOR and MOE to bending: 498 kgf cm-2 and 66,163 kgf cm-2; MOR and MOE for parallel compression: 258 kgf cm-2 and 100.813 kgf cm-2; shear: 82 kgf cm-2 and medium hardness: 208 kgf. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Exotic species; Resistance; Dimensional stability; Extractives; Toona ciliata Tecnologia e utilização de Produtos Florestais - Propriedades da madeira Espécie exótica; Resistência; Estabilidade dimensional; Extrativos; Toona ciliata. |
| Ano: 2014 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/523 |
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| SILVEIRA,AMANDA G. DA; SANTINI,ELIO J.; KULCZYNSKI,STELA M.; TREVISAN,RÔMULO; WASTOWSKI,ARCI D.; GATTO,DARCI A.. |
| ABSTRACT High toxicity of the preservatives most frequently used in wood treatment and the resulting risks of handling pose a threat to small producers and to the environment. In an attempt to mitigate these problems, the present study was conducted with the objective of evaluating the preservative effect of tannic extract on biodeterioration of Acacia mearnsii wood. For this purpose, untreated and preserved specimens, some with tannin extract and some with a preservative mixture based on CCB (Chromated Copper Borate), were submitted to accelerated rotting trials with the fungus that causes white rot (Pycnoporus sanguineus) for 16 weeks. The evaluations were made with a basis on weight loss and chemical components analysis, and they showed that the natural... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Extractives; Laboratory testing; Wood quality; White rot. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000603031 |
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