Secado De Eucalyptus Nitens Y Globulus Y Su Aprovechamiento en Blocks, Pisos Y Muebles

Rozas, Carlos; Sánchez, Reinaldo; Pinedo, Paula

doi:10.4067/s0718-221x2005000200005

Cited by 6 publications

(6 citation statements)

References 3 publications

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“…Although the largest increase in final quality corresponded to the 25-mm thick pieces, no differences were observed between the two tree ages. These results corroborate studies (Rezende et al 2010;Severo and Tomaselli 2000;Rozas et al 2005) that emphasize the benefits of using heat treatments to reduce defects caused by growth strains and thus increase the quality of the wood and reduce its warp.…”

Section: Quality Of Crooking In Sawn Woodsupporting

confidence: 90%

Effect of Log Heat Treatment on Release of Growth Stresses in Eucalyptus Nitens

Rozas

Vásquez

Vega

et al. 2021

WFS

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The use of Eucalyptus nitens has diversified the Chilean lumber industry in unprecedented ways. However, growth-induced strains cause splitting and warping. The objective of this investigation was to determine the effect of the heat treatment applied to logs of Eucalyptus nitens on the reduction of growth stresses and improvement of quality in sawn wood. Logs were extracted at different heights of the tree for 15-yr and 20yr-old tress. The sawmill process was allowed to obtain radial, mixed, and tangential plane pieces, at two thicknesses (25 and 50 mm). The evaluation of MC and warping was according to Chilean National Standards. The results obtained in this research suggest that by applying the heat treatment to Eucalyptus nitens logs, a significant reduction in growth strains can be achieved. Heat treatment also increased the quality of the pieces in terms of bow, crooking, and twisting. Therefore, there are substantial benefits of using heat treatments to reduce defects caused by growth strains and thus increase the quality of the wood and reduce its warp.

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Section: Quality Of Crooking In Sawn Woodsupporting

confidence: 90%

Effect of Log Heat Treatment on Release of Growth Stresses in Eucalyptus Nitens

Rozas

Vásquez

Vega

et al. 2021

WFS

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“…El género Eucalyptus, originario de Australia, se destaca entre las frondosas por la adaptabilidad de sus diversas especies y por los importantes crecimientos de algunas de ellas (Ball 1993, Touza 2001. La necesidad de disponer en Europa de especies alternativas al roble (Quercus robur y Quercus petraea), utilizado tradicionalmente de forma extensiva por la industria transformadora europea, ha sido señalada por diferentes autores (Rozas et al 2005, Németh et al 2014, siendo E. globulus una de las especies que puede utilizarse como materia prima para pisos de madera o parquet, tanto por sus adecuadas características tecnológicas, en particular por su densidad, como por su dureza (Hillis and Brown 1988, Baso-López 1998, Blakemore et al 2010.…”

Section: Introductionunclassified

Parquet multicapa de Eucalyptus globulus y Quercus robur . resistencia al impacto para diversas tipologías de fabricación

Sepliarsky¹,

Tapias-Martin

Rello

2018

Maderas, Cienc. tecnol.

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Utilizando el test de impacto, basado en la norma ASTM D1037-99, se compara la resistencia de diversas composiciones de fabricación de parquet multicapa de Eucalyptus globulus y Quercus robur, con distintos espesores de capa noble y utilizando para cada uno de ellos tres tipos diferentes de soporte base con el propósito de evaluar la aptitud de Eucalyptus globulus como parte destacada (capa noble) en la elaboración de un parquet multicapa. El resultado del ensayo de impacto resultó ser estadísticamente independiente de la especie utilizada (eucalipto o roble) como capa noble, habiéndose analizado con niveles de significación superiores al 95%, siendo, sin embargo, dependiente del tipo de elemento de soporte utilizado y del espesor de la capa noble. Un modelo lineal, que utiliza la densidad media en los 4 primeros milímetros de profundidad de cada pieza, permitió explicar hasta un 82% de la variación del diámetro de huella en el ensayo de impacto, lo que permite utilizar con suficiente garantía esta densidad como predictor del diámetro de huella del ensayo de impacto.. Palabras clave: Dureza, eucalipto, pisos de ingeniería, resistencia al impacto, roble.

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“…Furthermore, wood warping is strongly influenced by changes in moisture content that occur from the felled tree to the sawing process [20]. Most species of the genus Eucalyptus are widely known for the development of abundant cracks, collapses, and the presence of various defects, as described above [21].…”

Section: Introductionmentioning

confidence: 99%

Characterization and Yield of Eucalyptus regnans F. Muell Logs for Lumber Production

Rozas,

Zapata,

Muñoz

et al. 2023

Forests

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The yield of Eucalyptus regnans logs for lumber production was evaluated. Crack width and length at each log end were measured. Two log-cutting plans were used to obtain sawn lumber. The first plan (PA) considered logs with diameters varying from 28 to 40 cm, and in the second plan (PB), the log diameters ranged from 42 to 56 cm (PB). Lumber yield was determined using two log volume methods: the Japanese Agricultural Standards (JAS) and Smalian’s equation. The deformations of E. regnans lumber were measured. The Australian and Chilean standards were used to classify sawn lumber. The results showed that logs had radial cracks at both log ends. Cracks were classified into two groups, considering the crack length. Regarding the lumber deformations, most boards exhibited level B bows and crooks in both cutting plans. Levels A and B twists were prevalent in PA, whereas in PB, level A significantly outnumbered level B. The lumber yield of E. regnans in PB was higher than in PA. The lumber yield determined by Smalian’s equation was higher than that determined by the JAS method. This research provides insight into the characterization of E. regnans for lumber production, highlighting its relevance in the forestry industry.

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Secado De Eucalyptus Nitens Y Globulus Y Su Aprovechamiento en Blocks, Pisos Y Muebles

Cited by 6 publications

References 3 publications

Effect of Log Heat Treatment on Release of Growth Stresses in Eucalyptus Nitens

Effect of Log Heat Treatment on Release of Growth Stresses in Eucalyptus Nitens

Parquet multicapa de Eucalyptus globulus y Quercus robur . resistencia al impacto para diversas tipologías de fabricación

Characterization and Yield of Eucalyptus regnans F. Muell Logs for Lumber Production

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