LABORATORY TEST CONCERNING THE DURABILITY OF WOOD IN CONTACT WITH SOIL

Emanuela BELDEAN

Lect.dr.eng. - Transilvania University of Brasov, Faculty of Wood Engineering
Address: B-dul. Eroilor nr. 29, 500036 Brasov, Romania
Tel: 0040 268 412921/int.192. Fax: 0040 268 415315
E-mail: ebeldean@unitbv.ro

Maria Cristina TIMARI
Prof dr. ch. - Transilvania University of Brasov, Faculty of Wood Engineering
E-mail: cristinatimar@unitbv.ro

Abstract: The paper presents the experimental research concerning the durability of wood by laboratory tests in contact with soil according to a method adapted to standard SR EN 807:2003. The tested wood species were: fir (Abies alba Mill.), spruce (Picea abies), Scots pine (Pinus sylvestris L.), larch (Larix decidua Mill.), oak (Quercus robur L.), beech (Fagus sylvatica L.), black locust (Robinia Pseudacacia) and eucalypt (Eucaliptus globulus L.). For experiments untreated and treated samples by impregnation with Romalit N were used. A series of preliminary macroscopic and microscopic results are presented. The results highlight the different biological colonisation of investigated samples proving the durability differences according to wood species and treatment. The test is running, the final evaluation being done in the following period.

Key words: wood, durability, laboratory test, soil contact, microscopy

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REFERENCES
BRISCHKE, C., WELZBACHER, C. R., RAPP, A. O., AUGUSTA, U., BRANDT, K.(2009) Comparative studies on the in-ground and above-ground durability of European oak heartwood (Quercus petraea Liebl.and Quercus robur L.). In: Eur. J. Wood Prod. 67, pp.329-338.
CISMARU, M (2003). Fizica lemnului si a materialelor pe baza de lemn. (Wood Physics and Mechanics). Editura Universitatii "Transilvania", Brasov.
EDLUND, M.L., NILSSON, T (1998). Testing the durability of wood. In: Materials and Structures, vol 31, pp 641-647.
MARINESCU, I. 1979. Uscarea lemnului. (Wood Drying). Editura Tehnica, Bucuresti.
RAPP, A. (2002). Experience with ENV 807 and field tests. Cost E 22 presentation, Madrid 21 st October 2002.
TREN, A., LARNOY, E: (2007). Chitosan treated wood and its effectiveness against soft rot fungi. In: The 9th IEE Symposium on Web Site Evolution WSE, October 5-6, Paris.
***EN 252:1995: Wood preservatives; Field test method for determining the relative protective effectiveness of wood preservatives in ground contact, Romanian version.
***ENV 807:2003: Wood preservatives; Determination of the effectiveness against soft rotting micro-fungi and other soil inhabiting micro-organisms, Romanian version.