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Maderas. Ciencia y tecnología

versión On-line ISSN 0718-221X

Resumen

DIAS SOARES, Bruno Charles; TARCISIO LIMA, José  y  MOREIRA DA SILVA, José Reinaldo. Analysing the drying behavior of juvenile and mature Eucalyptus saligna wood in drastic drying test for optimal drying schedule. Maderas, Cienc. tecnol. [online]. 2016, vol.18, n.4, pp.543-554. ISSN 0718-221X.  http://dx.doi.org/10.4067/S0718-221X2016005000047.

The heterogeneity of characteristics observed in the pith-bark direction within a log causes sawn pieces of wood have different behaviors during water removal. Understanding these differences is important for the industry regarding the possibility of classification of the lumber into juvenile wood and mature wood, facilitating the drying in separate loads. Thus, this study aimed to evaluate the behavior of juvenile and mature wood samples of Eucalyptus saligna when subjected to drastic drying. In order to do this, test specimens were submitted to drastic drying at 100°C to obtain the drying times, drying rates and dimensions of end checks. These data were applied in equations to obtain the parameters initial temperature, final temperature and drying potential, used in the elaboration of drying schedules. In juvenile wood we observed that the basic density was lower and the initial moisture content was higher. Mature wood showed a lower drying rate. Drying schedules were developed separately for juvenile and mature wood, the drying schedule for the latter considered milder than the drying schedule developed for juvenile wood.

Palabras clave : Drying potential; drying rate; drying time; end checks; moisture content.

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