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http://dx.doi.org/10.5658/WOOD.2015.43.1.112

Influence of Copper Azole Retention Level to Wood Decay  

Lee, Hyun-Mi (Department of Forest Products, Korea Forest Research Institute)
Son, Dong-Won (Department of Forest Products, Korea Forest Research Institute)
Lee, Han-Sol (Department of Forest Products, Korea Forest Research Institute)
Hwang, Won-Joung (Department of Forest Products, Korea Forest Research Institute)
Publication Information
Journal of the Korean Wood Science and Technology / v.43, no.1, 2015 , pp. 112-121 More about this Journal
Abstract
In this study, Copper Azole (CuAz), a domestically available wood preservative for pressure treatment, was employed to perform an experimental research on its infiltration and decay properties in Japanese Red Pine. Test specimens were pressure-injected with CuAz-2 preservative to measure its preservative effectiveness, and then its impact on weight and mass losses. Furthermore, wood specimens were treated with CuAz-2 preservatives of various concentration levels before they were decayed with brown-rot-fungi in order to observe decay properties on light microscope (LM) and field emission scanning electron microscope (FE-SEM). As a result, untreated specimen by Fomitopsis palustris showed the mass loss of more than 40%, and the value of preservative effectiveness of CuAz-2 by indoor decay was $1,73-3.32kg/m^3$. The concentration levels of CuAz-2 preservative were shown to cause significant variations in terms of decay progresses in the cross section, radial section, and tangential section. By contrast, untreated specimens had underwent serious decays in early wood, late wood, longitudinal resin canals, and ray, which led to vertical destruction of wood texture. As for the radial section, ray tracheid, ray parenchyma cell, and window like pits were decayed and destroyed. In the case of tangential section, uniseriate rays and vertical resin canals were seriously decayed. In conclusion, this study indicates that the adequacy of the current CuAz injection amount should be reviewed in the domestic environment because there are significantly different decays at different decay conditions.
Keywords
copper azole-2; brown-rot fungus; microscope; wood decay;
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Times Cited By KSCI : 2  (Citation Analysis)
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