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QUEBRACHO COLORADO (Schinopsis spp)
Nombre comercial
Quebracho colorado
Nombre científico (con autor)
Schinopsis spp.
Familia
ANACARDIACEAE
Nombres Comunes
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)
DESCRIPCIÓN DEL ÁRBOL
Descripción botánica
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.
Hábitat natural
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)
Distribución natural
South of Brazil, Paraguay, Bolivia and the North of Argentina.
Usos No-maderables
Dermatitis is reported to be induced in sensitive individuals by the contact with the branches, leaves or sawdust of this species.
IDENTIFICACIÓN DE LA MADERA
Descripción anatómica de la madera
Simple perforation plates. Occasionally multiple perforation plates. Intervessel pits medium, 7 to 10 micras. Rays 1 to 4 seriate. Septate fibers present.
Disponibilidad
Status de protección por CITES
Unrestricted
DESCRIPCIÓN GENERAL DE LA MADERA
Olor
The timber of this species has a bitter taste due to its high tannin content.
Color
The sapwood is yellowish white, clearly differentiated from the heartwood which is reddish brown.
Indice de Color (1= Negro, violeta; 7= Amarillo claro, blanco)
4
Grano
The grain is usually interlocked.
Durabilidad Natural
It is reported as very durable.
Indice de Durabilidad Natural (1=Muy alta, 7=Muy baja)
1
Dificultad para impregnar
The heartwood is extremely resistant to preservative treatment.
PROPIEDADES FÍSICAS DE LA MADERA
Densidad Básica (Peso anhidro/Vol. saturado) (g/cm³)
1.02
Densidad seca al aire (Peso y volúmen CH12%) (g/cm³)
1.22
Contracción Tangencial Total (Saturado hasta anhidro) (%)
6.1
Contracción Radial Total (Saturado hasta anhidro) (%)
4.4
Calendario de Secado
US-T1-B1
Estabilidad Dimensional (Contracción Total Tangencial %/Contracción Total Radial %)
1.4
PROPIEDADES QUÍMICAS DE LA MADERA
PROPIEDADES MECÁNICAS DE LA MADERA
Resistencia a flexión (Módulo de ruptura) CH12% (kgf/cm²)
976
Resistencia a la compresión paralela a la fibra CH12% (kgf/cm²)
627
TRABAJABILIDAD
Aserrado
This species is difficult to cut because of its hardness.
Cepillado
Planing of this species is reported to be difficult.
Taladrado
Boring of this species is reported to be difficult.
Usos Reportados
USOS FINALES (RESUMEN)
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
Puentes
- 2 - 25 madeiras da amazonia de valor comercial, caracterizacao, macroscopica, usos comuns e indices qualificativos
Postes de transmisión
- 3 - Estudo dendrologico e determinacao das caracteristicas fisicas e mecanicas do genipapo (Genipa americana)
Poste de palizada
- 4 - Estudo dendrologico e determinacao das caracteristicas fisicas e mecanicas da bicuiba
Postes cerca
- 5 - Propriedades fisicas e mecanicas da madeira e do contraplacado de Pinus elliottii
Barandilla
- 6 - Physical and mechanical properties of Eucalyptus deglupta Blume grown in Costa Rica
Crucetas
- 7 - Maderas latinoamericanas. II, Quercus alata Q. costaricensis y Q. eugeniaefolia
Durmientes
- 8 - Maderas latinoamericas. III, Podocarpus standleyi ,Podocarpus oleifolius, Drims granadensis, Magnolia poasana y Didymopanax pittieri
Pilotes
- 9 - Maderas latinoamericanas. IV, Nectandra sp. Ocotea austinii, Persea sp. aff. vesticula, Persea schiedeana
VIVIENDA GENERAL
- 10 - Silica in Timbers
Pisos
- 14 - Handbook of Hardwoods
Peldaños
- 17 - Tree Conservation Database
IMPLEMENTOS DEPORTIVOS
- 38 - Annual Review and Assessment of the World Timber Situation 1998-ITTO
bolillos (Tacos)
- 40 - Internet
artesanía
- 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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