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OZIGO (Dacryodes buettneri)
Nom commercial
Ozigo
Nom scientifique (avec auteur)
Dacryodes buettneri H.J.Lam
Famille
BURSERACEAE
Noms communs (pays)
Ozigo (Gabon); Assia (Equatorial Guinea); Tchibudimbu; Samveien; Safunkala; Ossamvegna; Osogho; Osighou; Nkala; N`sikou; Musiku; Mouzighou; Massikou; Essassia; Assa-mingoug; Assia (Germany); Assia (Gabon); Ozigo
Synonymes du nom scientifique (avec auteurs)
Pachylobus ezigo Pierre Msc.; Pachylobus buettneri (Engl.) Engl.; Pachylobus buettneri (Engler) Engl.; Canarium buettneri Engl.
DESCRIPTION DE L'ARBRE
Description botanique
The tree reaches a height of 26 to 40 m, with diameters from 130 to 170 cm, normally not buttressed. The bole is usually straight and cylindrical.
Habitat naturel
Dacryodes buettneri is prevalent in rain forests as a dominant or codominant species.
Répartition naturelle
West Africa.
IDENTIFICATION DU BOIS
Description anatomique du bois
Wood diffuse porous. Occasionally vessels exclusively solitary (over 90%). Tangential diameter of vessel lumina 150 to 200 micras (medium). Tyloses thin walled. Non-vestured pits. Vessels per mm2 6 to 10 (medium). Simple perforation plates. Vessel-ray pits coars Paratracheal axial parenchyma scanty and/or vasicentric. 4 to 10 rays per mm (medium). Rays non-storied. Rays commonly 2 seriate. Silica bodies in the ray cells. Occasionally prismatic crystals in the ray cells. Body ray cells procumbent with one row of upright and/or square marginal cells (Kribs-III). Septate fibers present. Fibers with simple to minutely bordered pits.
Disponibilité
Statut CITES
Unrestricted
DESCRIPTION GÉNÉRALE DU BOIS
Teinte
The sapwood is greyish white. The heartwood is pink white to pinkish grey, it is not clearly demarcated.
Index de Teinte (1 = Noir, 7 = Jaune clair)
6
Grain
The grain is highly and systematically interlocked.
Texture
This wood has a somewhat medium texture.
Durabilité naturelle
Not durable; important risks of decay attacks at any processing step, from logs up to final products. It must receive preservative treatment. Sensible to termites attack. Heartwood is sensible to Lyctus attacks.
Index de durabilité naturelle (1 = Très élevée, 7 = Très faible)
5
Tensions internes de croissance
No residual stresses are reported in this species.
Teneur en silice
Silica Content: Silica is present. Amounts over 0.05% may affect wood processing. Silica Value: 0.26
Résistance à l'imprégnation
Difficult to treat with only a low penetration of the preservative products.
PROPRIÉTÉS PHYSIQUES DU BOIS
Densité basale ou gravité spécifique (poids anhydre/vol. saturé) (g/cm³)
0.54
Densité sèche à l'air (poids et volume à 12%TH) (g/cm³)
0.59
Retrait tangentiel total (saturé à 0%TH) (%)
7.3
Retrait radial total (saturé à 0%TH) (%)
5.2
Calendrier de séchage en séchoir recommandé
FR-9
Ratio de stabilité dimensionnelle (% retrait tangentiel total/% retrait radial total)
1.4
Calendrier de séchage en séchoir
http://www.tropicaltimber.info/wp-content/uploads/2015/09/KD_French.pdf
PROPRIÉTÉS CHIMIQUES DU BOIS
PROPRIÉTÉS MÉCANIQUES DU BOIS
Résistance à la flexion (module de rupture_MOR) 12%TH (kgf/cm²)
931
Rigidité (module d'élasticité_ MOE) 12%TH (kgf/cm²)
140897
Résistance à la compression parallèle à la fibre 12%TH (kgf/cm²)
533
Résistance à la compression perpendiculaire à la fibre 12%TH (kgf/cm²)
68
Résistance au cisaillement (radial) 12%TH (kgf/cm²)
74
Dureté Janka (latérale) 12%TH (kgf)
424
Dureté Janka (extrémités) 12%TH (kgf)
529
OUVRABILITÉ
Sciage
It is easy to saw.
Coupe de placage de déroulage
Suitable for peeling if treated.
Placage tranche
Suitable for peeling if treated.
Effet d'émoussement
Severe blunting effect; stellited blades for sawing and carbide tools for machining are recommended.
Usinage
Possible difficulties caused by interlocked grain are reported.
Rabotage
Easy; no particular problems.
Moulurage
Moderately easy; tools must be cautiously sharpened.
Perçage
Moderately easy; tools must be cautiously sharpened.
Mortaisage
Moderately easy; tools must be cautiously sharpened.
Clouage
No particular problem.
Collage
Glues well if basic gluing technical rules are followed.
Ponçage
Difficult to obtain very good results because of interlocked grain.
Polissage
Can be polished without surface preparation.
Compatibilité avec outils manuels
No particular problems.
UTILISATIONS
UTILISATIONS FINALES (RÉSUMÉ)
HOUSING GENERAL, boards, flooring, parquet, frames, steps, panelling, fittings, shutter boards, FURNITURE AND CABINETS, common furniture, PLYWOOD AND VENEER, faces, cores, PACKING, heavy packing, pallets
MEUBLES ET M. DE RANGEMENT
- 10 - Silica in Timbers
Planches
- 13 - Dry kiln schedules for commercial woods. Temperate and tropical. Section III. Latin American (Mexico, Central, and South America) Woods–Conventional Temperatures
Planchers
- 14 - Handbook of Hardwoods
Parquets
- 15 - Empire Timbers
Cadres
- 16 - Woods of the World
Marches
- 17 - Tree Conservation Database
Panneaux
- 18 - W3TROPICOS Missouri Botanical Garden
Accessoires en bois
- 19 - Silica in Timbers
Volets
- 20 - Prospect: The wood database
MEUBLES ET M. DE RANGEMENT
- 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
Meubles ordinaire
- 23 - Handbook of Hardwoods
PANNEAUX ET PLACAGE
- 25 - Directory of Timber Trade Malaysia
Faces (de placage)
- 26 - Annual Review and Assessment of the World Timber Situation 1998-ITTO
âmes (de placage)
- 27 - Embassy of Brazil in Japan
EMBALLAGE
- 45 - Recopilación y Análisis de Estudios Tecnológicos de Maderas Peruanas
Embal_lourd
- 47 - Arvores Brasileiras
Emballage, palettes
- 48 - The strength properties of timbers
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