Some Physical properties of Juniperus procera and Eucalyptus Deglupta sawn Timbers.
2005
Getachew Desalegn; Gemechu Kaba; Worku Fekadu and Yiheyis Tadesse(Researchers)
Technical information gaps on wood properties and utilization methods are among the major causes in Ethiopia that led to inappropriate utilization of timber destruction of forest and endangering of certain valuable species such as Juniperus procera. The objective of this experiment was to determine seasoning and density properties of J. procera and eucalyptus deglupta sawn timbers. The experiments were conducted using oven, air and kiln seasoning methods. Boards were stacked using stickers in five replications and seasoned to about 12% moisture content (MC). Results revealed that there were significant differences (P0.0001) between timber species, seasoning methods and MC, among shrinkage characteristics, and density values. The mean final seasoned MC and density (at 12% MC) of E. deglupta and J. procera were about 13%, 410 Kg/m3 and 14%, 540 Kg/m3, respectively. E. deglupta and J.procera showed slow air seasoning rate while in kiln rapid and fairly rapid rate, respectively. Shrinkage values at oven-dry (0%) MC compared at 12% MC were increased by more than .6 times for both species. There were no serious seasoning defects observed. Both species showed acceptable timber properties and qualities. Therefore, both timbers have to be properly seasoned, handled and utilized at specified MC and density for intended construction and furniture purposes.
اظهر المزيد [+] اقل [-]الكلمات المفتاحية الخاصة بالمكنز الزراعي (أجروفوك)
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تم تزويد هذا السجل من قبل Ethiopian Institute of Agricultural Research