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Journal of Environmental Biology

pISSN: 0254-8704 ; eISSN: 2394-0379 ; CODEN: JEBIDP

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    Abstract - Issue Nov 2010, 31 (6)                                     Back


abstract_01

Characteristics of heat-treated Turkish pine and fir

wood after ThermoWood processing

 

Hamiyet Sahin Kol*

 

Technical Education Faculty, Department of Furniture and Decoration Education, Karabuk University, Karabuk - 78050, Turkey

 

(Received: September 03, 2009; Revised received: January 22, 2010; Accepted: February 24, 2010)

 

Abstract: The Finnish wood heat treatment technology, ThermoWood, was recently introduced to Turkey. Data about the mechanical and physical properties of Turkish wood species are important for industry and academia. In this study, two industrially important Turkish wood species, pine (Pinus nigra Arnold.) and fir (Abies bornm?lleriana Mattf.) were heat-treated using the ThermoWood process. Pine and fir samples were thermally modified for 2 hr at 212 and 190oC, respectively. The modulus of rupture (MOR), modulus of elasticity in bending (MOE), impact bending strength (IBS), and compression strength (CS), in addition to swelling (Sw) and shrinkage (Sh) of thermally-modified wood were examined. The results indicate that the heat treatment method clearly decreased the MOR, MOE and IBS of pine and fir. However, a small increase was observed for CS values of heat treated wood species. The most affected mechanical properties were MOR and IBS for both pine and fir. The reduction in MOE was smaller than that in MOR and IBS. Volumetric shrinkage and swelling of these species were also improved by approximately half. In addition, the changes in the mechanical and physical properties studied in pine were larger than that of fir.

Key words: Heat treatment, Mechanical properties, Physical properties, Pine, Fir

PDF of full length paper is available online

 

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