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Advisor(s)
Abstract(s)
Sapwood and heartwood samples of Pinus pinaster were treated in an oven at 190ºC and 200ºC for
2-6h. Dimensional stability, measured as Anti Shrinking Efficiency (ASE) between 0% and 65%
relative humidity, durability against fungi, mechanical resistance (MOE and MOR), hardness and
chemical composition were determined for treated and untreated sapwood and heartwood. Radial
ASE reached 52% for sapwood and 50% for heartwood while tangential ASE reached 50% and
40% respectively. MOE increased slightly at the beginning of the treatment decreasing afterwards.
No significant differences were found between sapwood and heartwood. MOR decreased by 50%
and 30% for sapwood and heartwood respectively. A significant increase in durability against
Rhodonia placenta was found for both heartwood and sapwood at the higher temperature and for
heartwood only at 190º for 4h.
Description
Keywords
Dimensional stability Durability Heartwood Heat treatment Mechanical properties Sapwood
Citation
Esteves, B., Nunes, L., Domingos, I., & Pereira, H. (2014). Comparison between heat treated sapwood and heartwood from Pinus pinaster. European Journal of Wood and Wood Products, 72(1), 53–60. doi:10.1007/s00107-013-0751-y.
Publisher
Springer