Publications
NIBIOs employees contribute to several hundred scientific articles and research reports every year. You can browse or search in our collection which contains references and links to these publications as well as other research and dissemination activities. The collection is continously updated with new and historical material.
2005
Authors
Magne SætersdalAbstract
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Authors
Per Gundersen Bjørn Berg W. S. Currie N. B. Dise B. A. Emmett V. Gauci M. Holmberg O. Janne Kjønaas J. Mol-Dijkstra C. van der Salm I. K. Schmidt A. Tietema W. W. Wessel Live Semb Vestgarden C. Akselsson W. De Vries M. Forsius H. Kros Egbert Matzner Filip Moldan K. J. Nadelhoffer L.-O. Nilsson G. J. Reinds U. Rosengren Arne O. Stuanes Richard WrightAbstract
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Carl-Magnus Mörth Peter Torssander O. Janne Kjønaas Arne O. Stuanes Filip Moldan Reiner GieslerAbstract
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Gry AlfredsenAbstract
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Abstract
In this study modified wood samples were tested according to the extended standardised test procedures of ENV 807 (3 types of soils). A Round Robin test was carried out at two laboratories: Swedish National Testing and Research Institute and Norwegian Forest Research Institute.The different soil types used were conifer forest soil (pH 4.6), soil from the Simlngsdalen test field (pH 5.2) and garden compost soil (pH 7.4). The wood modifications used were furfurylation (Visorwood), acetylation and heat treatment (Thermowood). Other materials tested were linseed oil impregnated pine, reference preservative (CC and CCA) treated pine and Robinia psuedoaccacia heartwood.A dynamic MOE (MOEdyn) test device based on measurement of ultrasonic pulse propagation was used for non-destructive decay strength evaluation during the incubation period. The MOE values were correlated to measured decay mass loss of the test specimens after different periods of exposure to the soils. Type of fungal attack was also evaluated using light microscopy.Results from preliminary studies indicate that ultrasound seems to be an excellent tool for evaluation of early brown rot decay. It also seems to be feasible for detecting white rot. However it does not seem to be very accurate in evaluating early stages of soft rot decay.