Tannin-boron preservatives for wood buildings: Mechanical and fire properties

Tondi Gianluca, Wieland Stefanie, Wimmer Thomas, Thévenon Marie-France, Pizzi Antonio, Petutschnigg Alexander. 2012. Tannin-boron preservatives for wood buildings: Mechanical and fire properties. Holz als Roh- und Werkstoff, 70 (5) : 689-696.

Titre allemand : Holzschutzmittel auf Tanninharz-Bor-Basis für Gebäude aus Holz: Mechanische Eigenschaften und Brandverhalten

Quartile : Q2, Sujet : MATERIALS SCIENCE, PAPER & WOOD / Quartile : Q3, Sujet : FORESTRY

Résumé : The remarkable biological properties of tanninboron wood preservatives for outdoor applications have been investigated recently (Thevenon et al. in Eur. J. Wood Prod. 67:89, 2009). In the present paper mechanical and fire-proofing attributes of these formulations are determined. Mechanical properties of Scots pine and beech specimens treated with tannin-based formulations were examined in compression and bending strength tests and surface hardness was determined. The tannin-hexamine formulations reticulated into the wood structure improve the strength of the treated specimens. The treated samples which underwent compression, bending, hardness and gluing tests showed improvements of on average 20%. Fire tests have been monitored regarding short and long flame exposure time. Short tests such as ignition, flame and ember time have allowed the ignition of the fire to be simulated, while the weight loss tests have provided a good overview of the behavior of the specimens during prolonged fire. A positive effect on fire-resistance is shown when wood is treated with tannin formulations. The fire-proofing properties of the resin have been upgraded adding boron and phosphorus. The ember time of the pieces treated using this method can be reduced by up to ten times.

Mots-clés Agrovoc : acide borique, composé hétérocyclique, produit de préservation du bois, lutte anti-incendie, Pinus sylvestris, Fagus sylvatica, Acacia mearnsii

Mots-clés géographiques Agrovoc : Autriche

Mots-clés complémentaires : Hexamine

Classification Agris : K50 - Technologie des produits forestiers
J12 - Manutention, transport, stockage et conservation des produits forestiers

Champ stratégique Cirad : Hors axes (2005-2013)

Auteurs et affiliations

• Tondi Gianluca, University of Applied Science (AUT)
• Wieland Stefanie, University of Applied Science (AUT)
• Wimmer Thomas, University of Applied Science (AUT)
• Thévenon Marie-France, CIRAD-PERSYST-UPR Bois tropicaux (FRA)
• Pizzi Antonio, ENSTIB (FRA)
• Petutschnigg Alexander, University of Applied Science (AUT)

Source : Cirad - Agritrop (https://agritrop.cirad.fr/565347/)

Métriques

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