Collapse and physical properties of native and pre-steamed Eucalyptus Camaldulensis Eucalyptus Saligna wood from Tunisa

Elaieb Mohamed Tahar, Ayed S.B., Ouellani S., Khouja Mohamed Larbi, Touhami Issam, Candelier Kévin. 2019. Collapse and physical properties of native and pre-steamed Eucalyptus Camaldulensis Eucalyptus Saligna wood from Tunisa. Journal of Tropical Forest Science, 31 (2) : 162-174.

Quartile : Q4, Sujet : FORESTRY

Résumé : Eucalyptus is the second major wood species used for Tunisian reforestation since 1957, and they are found around the country in several arboretums. Eucalyptus may be an interesting raw material to the Tunisian wood industry. The main obstacle to its industrial exploitation is its natural propensity to incur internal checking, collapse and a high transverse shrinkage during industrial drying process. This study focused on the physical and mechanical properties of reforested Eucalytus saligna and Eucalyptus camaldulensis from the north west of Tunisia. Moisture content, densities, shrinkages and mechanical properties were determined. Then, the impact of pre-steaming on the physical properties of modified wood was investigated. The results showed that both Eucalyptus possess low dimensional stability and mechanical properties compared to other Eucalyptusspecies from Tunisia, Morocco, Australia and Brazil. These wood characteristics were mainly due to their low density and sensitivity to collapse reactions, occurred during drying. Pre-steaming process reduced Eucalyptswood moisture content, changing the wood permeability and resulting in a residual collapse recovery and a decrease in wood shrinkage. Pre-steaming treated E. camaldulensis and E. saligna wood could be valuable as furniture and/or structural material without being submitted to moisture content variation.

Mots-clés Agrovoc : Eucalyptus camaldulensis, Eucalyptus saligna, propriété mécanique, propriété physicochimique, propriété du bois, collapsus, retrait, séchage par air chaud

Mots-clés géographiques Agrovoc : Tunisie

Mots-clés libres : Collapse phenomenon, Densities, Mechanical properties, Shrinkages, Tunisian Eucalyptus

Classification Agris : K50 - Technologie des produits forestiers

Champ stratégique Cirad : CTS 7 (2019-) - Hors champs stratégiques

Auteurs et affiliations

• Elaieb Mohamed Tahar, INRGREF (TUN)
• Ayed S.B., INRGREF (TUN)
• Ouellani S., Arrondissement des forêts (TUN)
• Khouja Mohamed Larbi, INRGREF (TUN)
• Touhami Issam, INRGREF (TUN)
• Candelier Kévin, CIRAD-PERSYST-UPR BioWooEB (FRA) ORCID: 0000-0002-9328-8511 - auteur correspondant

Source : Cirad-Agritrop (https://agritrop.cirad.fr/592443/)

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