The effects of continuous and intermittent drying regimes on the total shrinkage and collapse have been investigated for six species of difficult-to-dry planted Eucalyptus timbers. The results have shown that total shrinkage and collapse in all eucalypt woods examined were greater for continuous drying than intermittent drying with the exception of an intermittent drying ran based on change of relative humidity (RH). Periodic cycling of RH can lead to the increase of total shrinkage and collapse in green/saturated wood in higher drying temperature conditions (more then 60 °C) rather than increasing collapse recovery and was especially obvious for lower-density eucalypts.
展开▼
