Odunda Doğal Dayanımı Etkileyen Faktörler

Ağaç malzemenin kullanım yerinde uzun süre dayanıklılığı iki faktöre bağlıdır; kullanım sırasında ve sonundaki

Anahtar Kelimeler:

Doğal dayanım, Diri odun, Öz odun

Factors Effecting Natural Durability in Wood

The long term durability of wood material in service is depended on the two factors; the conditions in serviceand the end, and natural durability characteristic. When compared to other plants wood reveals more resistanceagainst biodeterioration caused by microorganisms. Natural resistance of wooden tissue is based on their cellwall. However, main reason of the natural resistance of certain woods is the toxical constituents present inheartwood.

Keywords:

Natural durability, Sapwood, Heartwood,

PDF

___

° Anonymous 1972. Laboratory tests of natural decay resistance of timber. Princes Risborough Laboratory, Timberlab pap. 50.
° ASTM D 2017 – 81 1994. Accelerated laboratory test of natural decay resistance of woods.
° Berkel, A. 1972. Ağaç Malzeme Teknolojisi, Ağaç Malzemenin Korunması ve Emprenye Tekniği, İ.Ü. Orman Fakültesi Yayın No: 1745/183, Sermet Matbaası, İstanbul.
° Findlay, W.P.K. 1985. Preservation of Timber In The Tropics. Martinus Nijhoof /DR W. Junk Publishers, ISBN 90-247-3112-7 Dordrecht, Netherlands.
° Fortin, Y., Poliquin, J. 1976. Natural durability and preservation of one hundred tropical African woods. International Development Reserach Center (IDRC)-017e, Ottawa, Canada.
° Haygreen, J.G. and Bowyer, J.L. 1996. Forest Products and Wood Science. Third edition, Iowa State University Press / Ames ISBN: 0-8138-2256-4.
° Hillis, W.E. 1972. Formation and properties of some wood extractives, Phytochemistry, 11:1207-1218.
° Nelson, N.D., Heather, W.A. 1972. Wood color, basic density and decay resistance in heartwood of fastgrown Eucalyptus grandis Hill. Ex Maiden. Holzforschung, 26 (2) : 54-60.
° Ofori, J. 1985. The durability and preservation of West African timbers. In: Preservation of Timber in the Tropics (ed. W.P.K. Findlay), pp. 193-203, Martinus Nijhoff / Dr W. Junk, Dordrecht, Netherlands.
° Panshin, A.J. and De Zeeuw, C. 1980. Textbook of Wood Technology. Mc Graw-Hill, Inc. Fourth Edition, ISBN: 0-07-04844-4, New York.
° Purslow, D.F. 1976. Results of field tests on the natural durability of timber (1932-1975). Princes risborough Laboratory, Building Research Establishment, cp6/76.
° Rao, B.S. 1976. Variation in resistance to decay of Aesculus hippocastanum L. against Polyporus versicolor. J. Indian Acad. Wood Sci., 7 (1):10-13.
° Scheffer, T.C. and Cowling, E.B. 1966. Natural resistance of wood to microbial deterioration. Annual Reviews Phytopathology, 4:147-170.
° Selik, M. 1988. Odun Patolojisi. İ.Ü. Orman Fakültesi, Yayın No: 3511/377, Taş Matbaası, İstanbul.
° Smith, D.N. 1959. The Natural Durability of Timber, For. Prod. Res. Record no 30, 2nd edn,
° HMSO, London.
° Taylor, A.M., Gartner, B.L. and Morrell, J.J. 2002. Heartwood formation and natural durability–A review. Wood and Fiber Science, 34 (4), 2002, pp. 587-611.
° Zabel, R.A. and Morrel. J.J. 1992. Wood Microbiology, Decay and Its Prevention. Academic Press, Inc., ISBN: 0-12-775210-2, San Diego, California.