Physical properties and termite durability of maritime pine Pinus pinaster Ait., heat-treated under vacuum pressure

Thibaud Surini (1) , Fatima Charrier (2) , Jérôme Malvestio (1) , Bertrand Charrier (2) , Amine Moubarik (2) , Patrick Castéra (1) , Stéphane Grelier (3, 4)

1 Us2b - Unité des Sciences du bois et des biopolymères
2 IPREM - Institut des sciences analytiques et de physico-chimie pour l'environnement et les materiaux
3 LCPO - Laboratoire de Chimie des Polymères Organiques
4 Team 2 LCPO : Biopolymers & Bio-sourced Polymers

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 260A degrees 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 200A degrees C had no significant effect on wood properties. However, at 230 and 260A degrees 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.

Mots clés: NORWAY SPRUCE; SYLVESTRIS L.; BEECH WOOD; STRENGTH; DECAY; WETTABILITY CHANGES; TECHNOLOGICAL PROPERTIES; BEHAVIOR; SYLVESTRIS L; MECHANICAL-PROPERTIES; SCOTS PINE

Domaines: Polymères

Thibaud Surini, Fatima Charrier, Jérôme Malvestio, Bertrand Charrier, Amine Moubarik, et al.. Physical properties and termite durability of maritime pine Pinus pinaster Ait., heat-treated under vacuum pressure. Wood Science and Technology, 2012, 46 (1-3), pp.487-501. ⟨10.1007/s00226-011-0421-3⟩. ⟨hal-00747658⟩