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QUEBRACHO COLORADO (Schinopsis spp)

Nom commercial

Quebracho colorado

Nom scientifique (avec auteur)

Schinopsis spp.

Famille

ANACARDIACEAE

Noms communs (pays)

Quebracho colrado chaqueño (Argentina); Quebracho macho (Argentina); Quebracho colorado santiagueño (Argentina); Tayning (Paraguay); Quebracho santiagueño (Argentina); Coronillo (Paraguay); Paraguas (Argentina); Quebracho chaqueño (Argentina); Maasit (Paraguay); Quebracho colorado (Paraguay)

DESCRIPTION DE L'ARBRE

Description botanique

It is a small to medium size tree, with total heights of 24 m and diameters of 40 to 110 cm. The trunk is straight and cylindrical. The wood is reported to have a high content of tannins.

Habitat naturel

Schinopsis trees are distributed in South America in the area known as Gran Chaco. In some sites they can be a pioneer species. They are reported to reach maximum development in somewhat swampy areas. Some species of Schinopsis are Vulnerable(IBAMA,2001)

Répartition naturelle

South of Brazil, Paraguay, Bolivia and the North of Argentina.

Usages non ligneux

Dermatitis is reported to be induced in sensitive individuals by the contact with the branches, leaves or sawdust of this species.

IDENTIFICATION DU BOIS

Description anatomique du bois

Simple perforation plates. Occasionally multiple perforation plates. Intervessel pits medium, 7 to 10 micras. Rays 1 to 4 seriate. Septate fibers present.

  • Vue macroscopique du bois (plan tangentiel)
  • Vue microscopique d'une section transversale du bois

Disponibilité

Statut CITES

Unrestricted

DESCRIPTION GÉNÉRALE DU BOIS

Odeur

The timber of this species has a bitter taste due to its high tannin content.

Teinte

The sapwood is yellowish white, clearly differentiated from the heartwood which is reddish brown.

Index de Teinte (1 = Noir, 7 = Jaune clair)

4

Grain

The grain is usually interlocked.

Durabilité naturelle

It is reported as very durable.

Index de durabilité naturelle (1 = Très élevée, 7 = Très faible)

1

Résistance à l'imprégnation

The heartwood is extremely resistant to preservative treatment.

PROPRIÉTÉS PHYSIQUES DU BOIS

Densité basale ou gravité spécifique (poids anhydre/vol. saturé) (g/cm³)

1.02

Densité sèche à l'air (poids et volume à 12%TH) (g/cm³)

1.22

Retrait tangentiel total (saturé à 0%TH) (%)

6.1

Retrait radial total (saturé à 0%TH) (%)

4.4

Calendrier de séchage en séchoir recommandé

US-T1-B1

Ratio de stabilité dimensionnelle (% retrait tangentiel total/% retrait radial total)

1.4

PROPRIÉTÉS CHIMIQUES DU BOIS

PROPRIÉTÉS MÉCANIQUES DU BOIS

Résistance à la flexion (module de rupture_MOR) 12%TH (kgf/cm²)

976

Résistance à la compression parallèle à la fibre 12%TH (kgf/cm²)

627

OUVRABILITÉ

Sciage

This species is difficult to cut because of its hardness.

Rabotage

Planing of this species is reported to be difficult.

Perçage

Boring of this species is reported to be difficult.

UTILISATIONS

UTILISATIONS FINALES (RÉSUMÉ)

EXTERIOR GENERAL, bridges, poles, paling, stakes posts, rails, crossarms, crossties, piers, HOUSING GENERAL, flooring, steps, SPORTS, bowling polo balls, OTHER AND MUSICAL INSTRUMENTS, handicrafts

EXTERIOR GENERAL
  • 1 - Tabela de resultados de ensaios fisicos e mecanicos
Ponts
  • 2 - 25 madeiras da amazonia de valor comercial, caracterizacao, macroscopica, usos comuns e indices qualificativos
Poteaux
  • 3 - Estudo dendrologico e determinacao das caracteristicas fisicas e mecanicas do genipapo (Genipa americana)
Pieux de cloture
  • 4 - Estudo dendrologico e determinacao das caracteristicas fisicas e mecanicas da bicuiba
Piquets
  • 5 - Propriedades fisicas e mecanicas da madeira e do contraplacado de Pinus elliottii
Rampe
  • 6 - Physical and mechanical properties of Eucalyptus deglupta Blume grown in Costa Rica
Crosses
  • 7 - Maderas latinoamericanas. II, Quercus alata Q. costaricensis y Q. eugeniaefolia
Traverses de chemin de fer
  • 8 - Maderas latinoamericas. III, Podocarpus standleyi ,Podocarpus oleifolius, Drims granadensis, Magnolia poasana y Didymopanax pittieri
Piliers
  • 9 - Maderas latinoamericanas. IV, Nectandra sp. Ocotea austinii, Persea sp. aff. vesticula, Persea schiedeana
MEUBLES ET M. DE RANGEMENT
  • 10 - Silica in Timbers
Planchers
  • 14 - Handbook of Hardwoods
Marches
  • 17 - Tree Conservation Database
SPORTS
  • 38 - Annual Review and Assessment of the World Timber Situation 1998-ITTO
Quilles_ bowling
  • 40 - Internet
Artisanat
  • 66 - Maderas latinoamericanas. VII. Caracteristicas anatomicas. propiedades fisicomecanicas, de secado, y tratabilidad de la madera juvenil de Cordia alliodora (Ruiz & Pav. Oken.)

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