Water absorption differences between sapwood and heartwood of Scots pine and Norway spruce heat-treated at temperatures 170°C, 190°C, 210°C and 230°C were investigated. The results were compared to industrially kiln-dried reference samples. Water absorption was determined with a floating test based on the EN 927-5 standard. Generally, the heartwood of both wood species absorbed less water than sapwood. Heat-treatment evidently decreased the water absorption of spruce and pine heartwood. Pine sapwood quickly absorbed much water compared to the heartwood of pine. It is very remarkable that heat-treatment at lower temperatures actually increased the water absorption of pine sapwood.
|Title of host publication||Wood Modification|
|Subtitle of host publication||Processes, Properties and Commercialisation|
|Place of Publication||Göttingen|
|Pages||70 - 73|
|Publication status||Published - 2005|
|MoE publication type||B3 Non-refereed article in conference proceedings|
|Event||the Second European Conference on Wood Modification, ECWM 2005 - Göttingen, Germany|
Duration: 6 Oct 2005 → 7 Oct 2005
|Conference||the Second European Conference on Wood Modification, ECWM 2005|
|Period||6/10/05 → 7/10/05|
- thermal modification
- water absorption
Metsä-Kortelainen, S. (2005). The water absorption of thermally modified sapwood and heartwood of Scots pine and Norway spruce. In Wood Modification: Processes, Properties and Commercialisation (pp. 70 - 73).