Abstract
Spruce and lodgepole pine kiln dried boards were labelled and sawn into sections. One section was needle incised in Germany while a matching section was incised using a conventional North American incising technique. After pressure treatment with chromated-copperarsenate (CCA) the preservative penetration and retentions were measured. Comparison of these two parameters, for both the wood species, showed that needle incising significantly improved the treatment compared to conventional incising. Further studies are required to evaluate alternative Canadian wood species.
Zusammenfassung
Künstlich getrocknete Fichten- und Kiefernbretter wurden gekennzeichnet und in Teile aufgetrennt. Jeweils ein Teil wurde in der Bundesrepublik, nach einem deutschen Verfahren, der zugehörige zweite Teil nach dem konventionellen, nordamerikanischen Verfahren perforiert. Nach CCA-Druckimprägnierung wurden Eindringung und Aufnahmemenge ermittelt. Der Vergleich beider Meßgrößen bei beiden Holzarten machte deutlich, daß die Nadel-Technik (needle incising) gegenüber der konventionellen Perforationstechnik deutliche Verbesserungen brachte. In weiteren Versuchen sollen kanadische Holzarten geprüft werden.
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The assistance and advice provided by Professor M. Gersonde, Bundesanstalt für Materialprüfung, during the design and needle incising phases of the project is gratefully acknowledged.
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Ruddick, J.N.R. A comparison of needle and North American incising techniques for improving preservative treatment of spruce and pine lumber. Holz als Roh-und Werkstoff 44, 109–113 (1986). https://doi.org/10.1007/BF02606210
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DOI: https://doi.org/10.1007/BF02606210