20.500.12556/RUL-127563 Analiza razkrojenega smrekovega lesa zaščitenega z biocidnim proizvodom CCB po 14 letih izpostavitve na prostem Analysis of decayed Norway spruce wood impregnated with CCB after 14 years of outdoor exposure Les na prostem je izpostavljen delovanju abiotskih in biotskih dejavnikov. Če hočemo njihovo delovanje upočasniti, moramo les zaščititi. V preteklosti je bil biocidni proizvod na osnovi bakrovih, kromovih in borovih spojin (CCB) ena najpomembnejših rešitev za zaščito lesa v ostrih pogojih izpostavitve. Kljub temu, da se CCB v EU praktično ne uporablja več, lahko služi kot referenca za vrednotenje novih biocidnih proizvodov. Na terenskem polju Oddelka za lesarstvo Biotehniške fakultete že 14 let poteka poskus v realnih pogojih, kjer so impregnirani vzorci izpostavljeni vremenskim vplivom v skladu z dvoslojnim testom. Pri zaščitenem lesu pogosto opažamo, da les propade hitreje kot je pričakovano. V okviru tega prispevka želimo na podlagi analize razkrojenega s CCB impregniranega lesa s terenskega polja Oddelka za lesarstvo ugotoviti, zakaj je prišlo do prezgodnjega razkroja. Rezultati kažejo, da ustrezno življenjsko dobo zagotavljata ustrezna retencija in penetracija aktivnih učinkovin v les. Wood in outdoor applications is exposed to abiotic and biotic factors. If we want to slow down the decay, the wood must be protected. In the past, biocidal products based on copper, chromium, and boron compounds (CCB) were one of the most important solutions for wood protection under extreme conditions. Although CCB is in practice no longer used in the EU, it can serve as a reference for the evaluation of new biocidal products. At the field test site of the Department of Wood Science and Technology, Biotechnical Faculty, an experiment has been carried out under real conditions for 14 years, in which impregnated samples are exposed to the weather according to a double-layer test. In the case of treated wood, we often find that the wood decays faster than expected. In this work we want to determine what contributes to decay based on the analysis of decayed impregnated wood from the field test site. The results show that sufficient retention and penetration of the active substances into the wood ensures the planned service life. les zaščita lesa CCB impregnacija razkroj lesne glive wood wood protection CCB impregnation decay wood inhabiting fungi true false true Slovenski jezik Angleški jezik Članek v reviji 2021-06-15 09:15:59 2021-06-15 09:16:08 2024-04-03 12:31:06 0000-00-00 00:00:00 2021 0 0 Str. 5-15 št. 1 Let. 70 2021 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 630*84 0024-1067 10.26614/les-wood.2021.v70n01a01 63184899 RAZ_Humar_Miha_2021.pdf RAZ_Humar_Miha_2021.pdf 1 49B15FF56E636163C7CD0BD946F39AF1 dd89cc09f65f259812edaccd9dfd9f2395e398c3c24818526e38b47eeef78c8a 1ecbf4ef-cdad-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=143991 https://journals.uni-lj.si/les-wood/article/view/12105 0 75efcc0a-cda9-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=143989 Biotehniška fakulteta Les 0 0 0