Properties of Thermally Modified Scots Pine (Pinus sylvestris L.), Kazdağı Fir (Abies equi-trojani Asch. et Sint.), and Eastern Beech (Fagus orientalis Lipsky)


  • Onur Ulker Department of Architecture and Design Faculty, Eskisehir Technical University, P. O. Box 26555, Tepebasi, Eskisehir TR


Surface roughness, Thermal modification, Discoloration, Sanding


Surface roughness and discoloration of thermally modified Scots pine (Pinus sylvestris L.), Kazdağı fir (Abies equi-trojani Asch. et Sint.), and Eastern beech (Fagus orientalis Lipsky) were evaluated. The surface roughness and discoloration of the samples sanded with 60, 80, and 120-grit grades were evaluated at temperature levels of 160, 180, 200, and 220 °C. Findings were subjected to multiple analysis of variance and Duncan’s homogeneity tests; using the SPSS package program, single, double, triple, and quadruple interactions were analyzed. The highest surface roughness values were found in Eastern beech samples with radial cross-section (12.4 µm) finished with 60-grit sandpaper. The lowest roughness value was found in Kazdagi fir samples that were heat-treated in 200 °C and processed with 120-grit sandpaper (2.03 µm). The lowest discoloration evaluation (∆E) value was found eastern beech samples 32.43, and highest ∆E values 46.86 found at Scots pine.






Research Article or Brief Communication