< Retour KéKéLé (Holoptelea grandis) Version imprimable
KéKéLé (Holoptelea grandis)
Nom commercial
Kékélé
Nom scientifique (avec auteur)
Holoptelea grandis Mildbr.
Famille
ULMACEAE
Noms communs (pays)
Kekele (Côte d`Ivoire); Gomboul (Central African Republic); Ulazo; Orange barked terminalia; Nemba; Mutawale; Mutaa; M`bosso; Kekele; Inajoko; Butungu; Bala; Ayo; Awob; Aweb; Anakwa; Mumuli (Uganda); Nemba-mbobolo (Zaire); Mbosso (Congo); Gomeoul (Central African Republic); Avep-ele (Cameroon); Olazo (Nigeria); Kékélé
Synonymes du nom scientifique (avec auteurs)
Hymenocardia grandis Hutch.
DESCRIPTION DE L'ARBRE
Description botanique
The tree reaches a height of 32 to 50 m. The bole is usually fluted and buttressed often to a height of 1.7 m. Bole length may occasionally be up to 20 m in length. The trunk diameter attains 70 up to 170 cm.
Habitat naturel
Holoptelea grandis occurs in mixed, deciduous forests, moist, semi-deciduous, dense forests, and in forest patches in savanna country.
IDENTIFICATION DU BOIS
Description anatomique du bois
Wood diffuse porous. Occasionally vessels exclusively solitary (over 90%). Tangential diameter of vessel lumina 100 to 150 micras (small). White deposits in heartwood vessels. Non-vestured pits. Vessels per mm2 10 to 20 (abundant). Simple perforation plates. Ves Axial parenchyma aliform. Occasionally axial parenchyma confluent. Axial parenchyma storied. Non-crystals in axial parenchyma cells. 3 to 4 cells per parenchyma strand. 4 to 10 rays per mm (medium). Rays storied. Rays 1 to 4 seriate. Body ray cells procumbent with one row of upright and/or square marginal cells (Kribs-III). Non-septate fibers. Fibers with simple to minutely bordered pits.
Disponibilité
Statut CITES
Unrestricted
DESCRIPTION GÉNÉRALE DU BOIS
Teinte
The heartwood is yellowish white, it is not demarcated. The silver figure is fine.
Index de Teinte (1 = Noir, 7 = Jaune clair)
7
Grain
Straight or slightly interlocked, sometimes with an influence on further processing operations.
Texture
Texture is mostly fine to medium.
Luster
This wood is commonly of low luster.
Durabilité naturelle
Not durable; important risks of decay attacks at any processing step, from logs up to final products. It must receive preservative treatment. Moderately resistant to termites attack. The heartwood is sensible to Lyctus attacks.
Index de durabilité naturelle (1 = Très élevée, 7 = Très faible)
5
Tensions internes de croissance
Residual stresses are reported to be absent.
Teneur en silice
Silica Content: It is reported to have a negligible amount of silica. Contents over 0.05% may affect wood processing. Silica Value: 0.01
Résistance à l'imprégnation
Moderately easy to treat with a partial penetration of the preservative products.
PROPRIÉTÉS PHYSIQUES DU BOIS
Densité basale ou gravité spécifique (poids anhydre/vol. saturé) (g/cm³)
0.59
Densité sèche à l'air (poids et volume à 12%TH) (g/cm³)
0.65
Retrait tangentiel total (saturé à 0%TH) (%)
8.3
Retrait radial total (saturé à 0%TH) (%)
4.4
Défauts dus au séchage
Ease of Drying: Drying is fairly easy; some difficulties could occur when drying too fast.
Calendrier de séchage en séchoir recommandé
FR-7
Ratio de stabilité dimensionnelle (% retrait tangentiel total/% retrait radial total)
1.9
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)
1068
Rigidité (module d'élasticité_ MOE) 12%TH (kgf/cm²)
152520
Résistance à la compression parallèle à la fibre 12%TH (kgf/cm²)
616
Résistance à la compression perpendiculaire à la fibre 12%TH (kgf/cm²)
82
Résistance au cisaillement (radial) 12%TH (kgf/cm²)
71
Dureté Janka (latérale) 12%TH (kgf)
528
Dureté Janka (extrémités) 12%TH (kgf)
629
OUVRABILITÉ
Sciage
It is easy to saw.
Coupe de placage de déroulage
Suitable for slicing, also suitable for peeling if treated.
Placage tranche
Suitable for slicing, also suitable for peeling if treated.
Effet d'émoussement
Slight blunting effect; ordinary tools can be used for sawing and machining.
Usinage
Machining of this species is reportedly easy.
Rabotage
Moderately easy; tools must be cautiously sharpened.
Moulurage
Moderately easy; tools must be cautiously sharpened.
Tournage
30
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
Easy to perform; it gives good results.
Polissage
Can be polished without surface preparation.
Compatibilité avec outils manuels
No particular problems.
UTILISATIONS
UTILISATIONS FINALES (RÉSUMÉ)
HOUSING GENERAL, beams, joists, boards, flooring, parquet, frames, steps, panelling, fittings, FURNITURE AND CABINETS, luxury furniture, cabinets, PLYWOOD AND VENEER, faces, Decorative veneer, TURNING, ornaments, turned furniture, cutlery, lasts, OTHER AND MUSICAL INSTRUMENTS, handicrafts, matches
MEUBLES ET M. DE RANGEMENT
- 10 - Silica in Timbers
Pouters
- 11 - Prospect: The wood database
Solives
- 12 - Tropical timbers of the world. Part I-Tropical American Species
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
MEUBLES ET M. DE RANGEMENT
- 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
Meubles luxe
- 22 - Dry kiln schedules for commercial woods. Temperate and tropical. Section IV-Asian and Oceanian Woods
Armoires
- 24 - Empire Timbers
PANNEAUX ET PLACAGE
- 25 - Directory of Timber Trade Malaysia
Faces (de placage)
- 26 - Annual Review and Assessment of the World Timber Situation 1998-ITTO
Placage tranché
- 28 - Ministry of Agriculture, Fisheries & Forest of Fiji
Tournage
- 30 - Embassy of Honduras in Japan
Ornements
- 31 - Embassy of Colombia in Japan
Ornements
- 32 - Embassy of Cote d`Ivoire in Japan
Manches de couverts
- 33 - Embassy of Gabon in Japan
Formes à chaussures
- 34 - Embassy of Indonesia in Japan
Artisanat
- 66 - Maderas latinoamericanas. VII. Caracteristicas anatomicas. propiedades fisicomecanicas, de secado, y tratabilidad de la madera juvenil de Cordia alliodora (Ruiz & Pav. Oken.)
Allumette
- 71 - Proprietes physiques et mecaniques des bois tropicaux, premier supplement
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