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Maderas. Ciencia y tecnología

versión On-line ISSN 0718-221X


DE AVILA DELUCIS, Rafael; HERRERA DIAZ, René; LABIDI, Jalel  y  GATTO, Darci Alberto. Color of two eucalypts woods exposed to natural weathering in three different environments. Maderas, Cienc. tecnol. [online]. 2016, vol.18, n.1, pp.133-142. ISSN 0718-221X.

Surface degradation in outdoor wood and products is due to a combination of inherent climate factors together with colonization of decay organisms. From a technical and economic standpoint it is one of the main problems for the industry of products and materials made from wood. The aim of this work is to track the surface degradation of Corymbia citriodora and Eucalyptus tereticornis timbers originating from fast-growing plantations in Brazil, which have been exposed to outdoor weathering tests in three different environmental conditions. Changes in the material were monitoring using color measurement (CIEL*a*b* method), in cycles of 45 days up to a period of 360 days of exposure. The results showed that timber exposed to a forest ecosystem was less affected by environmental factors; this is probably due to climate insulation provided by these ecosystems. Besides, it was observed that samples of Corymbia citriodora had higher resistance to degradation compared with samples of Eucalyptus tereticornis, possibly due to differences in its chemical constitution.

Palabras clave : Biodegradation; biodeterioration; Corymbia citriodora; Eucalyptus tereticornis; photodegradation.

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