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BEKAK (Aglaia cucullata)
Nom commercial
Bekak
Nom scientifique (avec auteur)
Aglaia cucullata Roxb.
Famille
MELIACEAE
Noms communs (pays)
Solomon Island amoora; Rose kamala; Pacific maple; New Guinea amoora; Natmi; Muta; Mua mua; Maoa; Manatapuku; Lulua; Garotai; Bor-amari; Bekak; Amur; Pacific maple (United States of America); Bengang (Malaysia); Kato (Philippines); Malakamote (Philippines); Pacific maple (United Kingdom); Myauk le seik (Myanmar); Nyireh batu (Brunei Darussalam); Che (Thailand); Daeng nam (Thailand); Katong-baluga (Philippines); Goi (Vietnam); Lota amara (India); Latmi (India); Amari (India); Namota (Solomon Islands); Mawa (Solomon Islands); Amoora (Andaman Islands); Katong-haung (Philippines); Mua-mua (Solomon Islands); Thiteni (Myanmar); Chaya-kaya (Myanmar); Manga-daeng (Thailand); Amoora (Pakistan); Julungan (Sarawak); Tasua (Thailand); Maota (Andaman Islands); Amoora (Papua New Guinea); La-kihan (Philippines); Mawa (Andaman Islands)
Synonymes du nom scientifique (avec auteurs)
Amoora cucullata Roxb.; Amoora aherniana Merr.; Aglaia tripetala Merr.
DESCRIPTION DE L'ARBRE
Description botanique
It is a small to medium-sized, sometimes large tree up to 30 m tall. The bole is branchless for up to 24 m, up to 100 cm in diameter. The buttresses are up to 3 m high.
Habitat naturel
This widespread tree is the only member of the genus found in areas of mangrove, nipah (Nypa fruticans) swamp and estuaries. It is found in trade as Pacific Maple.
Répartition naturelle
It ranges from Thailand to the Solomon Islands and New Guinea.
IDENTIFICATION DU BOIS
Description anatomique du bois
Wood diffuse porous. Tangential diameter of vessel lumina 200 micras or more (large). Colored deposits in heartwood vessels. Vessels per mm2 5 to 20. Simple perforation plates. Vessel-ray pits similar to intervessel pits in size and shape. Intervessel pits smal Apotracheal axial parenchyma diffuse and/or diffuse in aggregates. Paratracheal axial parenchyma scanty and/or vasicentric. Prismatic crystals in chambered axial parenchyma cells and/or in fibers. Homogeneous rays and/or sub-homogeneous rays (all ray cells procumbent). Body ray cells procumbent with mostly 2 to 4 rows of upright and/or square marginal cells (Kribs-II). Body ray cells procumbent with one row of upright and/or square marginal cells (Kr Septate fibers present. Fibers with distinctly bordered pits.
Disponibilité
Statut CITES
Unrestricted
DESCRIPTION GÉNÉRALE DU BOIS
Odeur
The wood often has a fragrant, sometimes even pungent, odor when fresh, resembling both cedar and camphor.
Teinte
The sapwood is not sharply differentiated, it ranges from pale pink to light reddish. The heartwood is light reddish brown when fresh, it also darkens to wine red to walnut brown.
Grain
The grain is straight or slightly interlocked.
Texture
The texture is fine, but the Indian stock is somewhat coarser.
Luster
The wood surface is moderate in luster.
Durabilité naturelle
The natural durability is moderate, it is vulnerable to powder post beetles.
Index de durabilité naturelle (1 = Très élevée, 7 = Très faible)
3
Résistance à l'imprégnation
The heartwood is extremely resistant to pressure treatment, the sapwood shows some penetration of preservatives.
PROPRIÉTÉS PHYSIQUES DU BOIS
Densité basale ou gravité spécifique (poids anhydre/vol. saturé) (g/cm³)
0.52899354
Densité sèche à l'air (poids et volume à 12%TH) (g/cm³)
0.58
Retrait tangentiel total (saturé à 0%TH) (%)
10.7
Retrait radial total (saturé à 0%TH) (%)
6.8
Défauts dus au séchage
Ease of Drying: Air seasoning is reported to be easy. Boards 10 mm thick take 1.5 months to air dry from 70% to 15% moisture content. Drying Defects: Dries easily with little tendency to check or distort. Kiln Schedules: It takes about 6 days to kiln dry 25 mm thick boards from 50% to 10% moisture content.
Calendrier de séchage en séchoir recommandé
JP-26
Ratio de stabilité dimensionnelle (% retrait tangentiel total/% retrait radial total)
1.6
Calendrier de séchage en séchoir
http://www.tropicaltimber.info/wp-content/uploads/2015/09/KD_Japanese_ENG.pdf
PROPRIÉTÉS CHIMIQUES DU BOIS
PROPRIÉTÉS MÉCANIQUES DU BOIS
Résistance à la flexion (module de rupture_MOR) 12%TH (kgf/cm²)
895
Rigidité (module d'élasticité_ MOE) 12%TH (kgf/cm²)
117712
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)
39
Résistance au cisaillement (radial) 12%TH (kgf/cm²)
110
Dureté Janka (latérale) 12%TH (kgf)
496
Dureté Janka (extrémités) 12%TH (kgf)
667
OUVRABILITÉ
Sciage
This species is easy to saw.
Coupe de placage de déroulage
It is reported to peel and slice satisfactorily, but the veneer may warp severely during drying.
Placage tranche
It is reported to peel and slice satisfactorily, but the veneer may warp severely during drying.
Usinage
This species is easy to machine.
Rabotage
Because of its grain it requires sharp and fine set planes, however, planed surfaces are smooth and lustrous.
Tournage
30
Clouage
This species is reported to have a good nailing behavior.
Collage
This species is easy to glue.
Finissage
Wood of this species is easy to finish.
UTILISATIONS
UTILISATIONS FINALES (RÉSUMÉ)
HOUSING GENERAL, boards, FURNITURE AND CABINETS, cabinets, PLYWOOD AND VENEER, faces, TURNING, SPORTS, CONTAINERS, truck bodies, truck flooring, NAVAL CONSTRUCTION, OTHER AND MUSICAL INSTRUMENTS, moldings
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
MEUBLES ET M. DE RANGEMENT
- 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
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
Tournage
- 30 - Embassy of Honduras in Japan
SPORTS
- 38 - Annual Review and Assessment of the World Timber Situation 1998-ITTO
Carros_camion
- 53 - Timbers of the New World
Wagons
- 54 - Bulletin of the Government Forest Experiment Station N.157: Identification of Tropical Woods
CONSTRUCTION NAVALE
- 55 - Tropical Timber Atlas of Latin America
Moulures
- 79 - Padronização da Nomenclatura Comercial Brasileira das Madeiras Tropicais Amazônicas, Sugestão
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