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Physical properties and termite durability of maritime pine Pinus pinaster Ait., heat-treated under vacuum pressure |
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| Authors: | Thibaud Surini Fatima Charrier Jér?me Malvestio Bertrand Charrier Amine Moubarik Patrick Castéra Stéphane Grelier |
| Institution: | 1. INRA, Université Bordeaux 1, CNRS, UMR US2B, Batiment A11, 351, Cours de la Libération, 33405, Talence Cedex, France 2. Dpt SGM, Laboratoire Sylvadour, IUT des Pays de l’Adour, 371, rue du Ruisseau, 40004, Mont De Marsan, France 3. CNRS, INRA, Université Bordeaux 1, UMR US2B, Batiment A11, 351, Cours de la Libération, 33405, Talence Cedex, France 4. Université Bordeaux 1, INRA, CNRS, UMR US2B, Batiment A11, 351, Cours de la Libération, 33405, Talence Cedex, France |
| Abstract: | An original heat treatment performed under vacuum pressure was investigated. Maritime pine samples were treated at six different temperatures: 140, 160, 180, 200, 230 and 260°C. The physical and mechanical consequences, i.e. bending strength (MOR), modulus of elasticity (MOE), hygroscopic behaviour, equilibrium moisture contents and anti-swelling efficiency (ASE) were studied. A no-choice feeding test according to the NF EN 117 standard was achieved. Temperatures up to 200°C had no significant effect on wood properties. However, at 230 and 260°C, the decrease in MOR was severe, reaching 42.5 and 62.5%, respectively. Whatever the treatment conditions, wood samples were still highly degraded by termites, revealing no increase in their durability. |
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