20.500.12556/RUL-82446 Water uptake of thermally modified Norway spruce Upijanje vode toplinski modificirane norveške smreke Thermal modification of wood has been commercially available for almost twenty years but the complete mechanism of improved durability is still not completely understood. It is known that the temperature and duration of the modification influences the properties of the final products. There are several potential reasons for the increased durability of the modified wood. In recent research in particular, water exclusion efficiency has been identified as one of the key mechanisms. In order to elucidate this presumption, specimens made of Norway spruce heartwood were thermally modified at 6 different temperatures (160 °C, 180 °C, 190 °C, 200 °C, 210 °C and 230 °C) for three hours according to the Silvapro procedure. Control specimens were left unmodified. Three sets of tests were performed: (a) samples were soaked in water for 4 days and then positioned on load cells and allowed to dry until a constant mass was achieved; (b) short term water uptake was determined with a tensiometer and (c) wood-water interactions were verified using constant gravimetric moisture measurement during outdoor exposure. As expected, the degree of modification was reflected in the moisture content of the wood during testing. Short and medium term water uptakes correlated quite well with the performance of wood in outdoor applications. On the other hand, long term tensiometer measurements were not in line with either short term water uptake or outdoor measurements. Picea abies merilna celica tenziometer termična modifikacija navzem vode terenska testiranja true false true Hrvaški jezik Angleški jezik Delo ni kategorizirano 2016-05-11 03:54:51 2016-05-25 11:55:03 2022-08-01 22:36:55 0000-00-00 00:00:00 2015 0 0 Str. 273-279 št. 4 Let. 66 2015 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 630*813.13 0012-6772 10.5552/drind.2015.1421 2479241 2858754 RAZ_Zlahtic_Mojca_2015.pdf RAZ_Zlahtic_Mojca_2015.pdf 1 983C4AC128F29D5FAA7D4375EB6AB5EB 469c773b039428169b10f53489ed1f4014614614faf66dd27c511f2d12c519fa 206f5cd8-51bc-11ec-abdb-00155dcfd717 20.500.12556/rul/fe0ad429-cb61-4927-8284-c256b0bc94d3 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=151645 http://hrcak.srce.hr/index.php?show=clanak&id_clanak_jezik=221863 1 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=82661 Biotehniška fakulteta 0 0 0