COMBINATION OF TWO NON-INDUSTRIAL METHODS ON THE PRESERVATIVE TREATMENT OF Eucalyptus grandis FENCE POSTS
<p><strong> </strong></p> <p>This paper evaluated the effect of the combination of two non-industrial methods to treat fence posts of <em>Eucalyptus grandis</em>, on the penetration and retention of water borne preservative. Thus, four fences with 2.20 m in...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | Portuguese |
| Published: |
Universidade Federal de Santa Maria
2011-09-01
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| Series: | Ciência Florestal |
| Subjects: | |
| Online Access: | http://cascavel.ufsm.br/revistas/ojs-2.2.2/index.php/cienciaflorestal/article/view/3816 |
| Summary: | <p><strong> </strong></p> <p>This paper evaluated the effect of the combination of two non-industrial methods to treat fence posts of <em>Eucalyptus grandis</em>, on the penetration and retention of water borne preservative. Thus, four fences with 2.20 m in length were treated by replacement of sap and simple diffusion alone and other four ones have combined the two techniques, with water-borne CCB 50% preservative at a concentration of 3.5%. After each treatment condition, the pieces were seasoned in the shade for 30 days. Disks were taken at 0.60 and 1.60 m from the base of the pieces which had one side sanded for analysis of the penetration of the preservative using a solution of chrome azurol S. From the same parts, test specimens were also manufactured in diametrically opposed positions with dimensions of approximately 3.0 x 2.0 x 2.5 cm (radial x tangential x longitudinal) to analyze the retention of the element copper by atomic absorption spectrophotometry method and boron by visible spectrophotometry with azomethine-H, also known as colorimetry. The retention values obtained were compared with the minimum recommended by the Brazilian Association of Technical Standards – ABNT for water borne preservatives which is 6.5 kg of active ingredients per m³ of wood. The penetration achieved by the combined method was considered sufficient for non-industrial treatment, while the retention values were higher than the retention of at least 6.5 kg of active ingredients / m³ of treated wood in all positions and portions evaluated.</p><h1></h1> |
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| ISSN: | 0103-9954 1980-5098 |