Selected Mechanical and Physical Properties of Thermally Modified Wood after Field Exposure Tests

This study aimed to evaluate the impact of thermal modification on physical and mechanical properties three different wood species from Bosnia Herzegovina, namely beech (Fagus sylvatica L.), linden (Tilia cordata), silver fir (Abies alba). The samples underwent at five temperatures (170 °C, 180 195 210 220 °C) for varying durations (ranging 78 276 min). After treatment, they were exposed outdoor conditions twelve months. examined four-point bending strength, tensile force, color change, surface quality modified unmodified samples. results showed that exposure negatively impacted samples, especially in which was 41% 42%. Additionally, caused significant cracks thermally wood. also found prominent changes during months exposure. roughness determined with a confocal laser scanning microscope, increased both axial longitudinal surfaces after weathering. highest be 15.6 µm. Overall, this demonstrates importance its use-value products.