Document Type : Original Article
Authors
Associate Professor, Department of Handicrafts, the University of Arts,
Abstract
Wood is one of the raw materials used in the monument of Beit-o-Lahm church in Isfahan. The wooden door is in the altar of the church and the door opens to the cellar. The wooden door is made of plane and soft decay by fungi has decreased its strength. The purpose of the research is to examine the destructive effects of soft decay for reducing the strength of the historical wooden door made of plane in the cellar of the altar of Beit-o-Lahm church in Isfahan. In addition, physical, chemical, and mechanical strengths and structural changes of the wooden door are evaluated. For this purpose, documentation, statistical software, experimental studies, microscopic observations and FTIR and SEM are used to examine the chemical changes of the wood structure and morphological observations of the wood surface under the soft decay by fungi. The results of the tests show that fungi in the structure of the plane wood have destroyed the cell walls, increased the moisture, decreased density, cellulose and lignin and finally, they have declined the bending strength, compressive strength and impact strength and have reduced the resistance of the wood. The lack of the strengths has destroyed the historical wooden door
Keywords
- صادقی فر، حسن و میرشکرایی سید احمد، بررسی لیگنین چوب صنوبر تعیین خصوصیات با
روش های طیف سنجی FTIR, UV-Vis ، مجله علمی پژوهشی علوم کشاورز ، یشماره 3، 1384
- عبادی، سید اسحاق،بررسی ویژگی های آناتومیک چوب افرا پلت دست کاشت در محورهای
طولی و شعاعی درخت، فصلنامه علوم و فنون منابع طبیع ، ی سال پنجم، شماره 3، 1389
بررسی اثر تخریبی پوسیدگی نرم بر ...
107
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