20.500.12556/RUL-146017 Selected mechanical and physical properties of thermally modified wood after field exposure tests This study aimed to evaluate the impact of thermal modification on the physical and mechanical properties of three different wood species from Bosnia and Herzegovina, namely beech wood (Fagus sylvatica L.), linden wood (Tilia cordata), and silver fir wood (Abies alba). The samples underwent thermal modification at five different temperatures (170 °C, 180 °C, 195 °C, 210 °C, and 220 °C) for varying durations (ranging from 78 to 276 min). After treatment, they were exposed to outdoor conditions for twelve months. The study examined the four-point bending strength, tensile force, color change, and surface quality of the modified and unmodified samples. The results showed that outdoor exposure negatively impacted the mechanical properties of the unmodified samples, especially in the linden wood which was 41% and the beech wood which was 42%. Additionally, outdoor exposure caused significant surface cracks in the thermally modified linden and beech wood. The study also found prominent color changes in the modified and unmodified samples during twelve months of exposure. The roughness of the samples was determined with a confocal laser scanning microscope, which showed that the roughness increased on both the axial and the longitudinal surfaces after weathering. The highest roughness for the fir wood was determined to be 15.6 µm. Overall, this study demonstrates the importance of wood modification and its impact on the use-value of wood products. wood thermal modification surface roughness colour mechanical properties physical properties les termična modifikacija hrapavost površine barva mehanske lastnosti fizikalne lastnosti true false true Angleški jezik Slovenski jezik Članek v reviji 2023-05-18 07:04:37 2023-05-18 07:04:39 2023-05-19 03:47:31 0000-00-00 00:00:00 2023 0 0 Str. 1-14 iss. 5 Vol. 14 2023 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2023-05-12 630*8 1999-4907 10.3390/f14051006 152107267 RAZ_Dong_Huijun_2023.pdf RAZ_Dong_Huijun_2023.pdf 1 49970841CCEEEFA51E380D14942AE0B9 99ae8a01e76a9150416958b7fa3e0065070263cf827bc783ec0ac2c916b106f4 b9e27f0b-f53b-11ed-a314-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=169111 https://www.mdpi.com/1999-4907/14/5/1006 1 3c142427-f539-11ed-a314-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=169109 Biotehniška fakulteta 0 0 0