Abstract
The aim of this research was to determine some of the mechanical properties of Rowan wood impregnated with various impregnation materials. For this purpose, the test samples were prepared from Rowan (Sorbus aucuparia Lipsky) wood materials that are of common use in the forest products industry of Turkey according to TS 345. The test samples were treated with Tanalith-E, Vacsol Azure, Imersol-Aqua, and Boron compounds (Borax and Boric acid) by the vacuum impregnation technique in accordance with ASTM-D 1413-76standards and directives of the manufacturers. After impregnation, each sample was tested for observation of amount of retention, compression strengths, bending strengths, and modulus of elasticity in bending. As a result, compression strength was the highest with Boric acid impregnation, bending strength with Imersol-Aqua impregnation and modulus of elasticity in bending with Tanalith-E impregnation. The lowest value in compression strength was measured with Tanalith-E, bending strength in Borax and modulus of elasticity in bending with Vacsol Azure. So, the impregnations with Tanalith-E have advantages in compression and bending strengths and modulus of elasticity in bending of Rowan wood. Key words: Rowan wood, chemical materials, compression strength, bending strength, modulus of elasticity in bending.
Highlights
The durability of wood is affected by several factors
The test samples were prepared from Rowan (Sorbus aucuparia Lipsky) wood materials that are of common use in the forest products industry of Turkey according to TS 345
Each sample was tested for observation of amount of retention, compression strengths, bending strengths, and modulus of elasticity in bending
Summary
The durability of wood is affected by several factors. If the wood materials are used without processing by preservative chemicals (with regard to the area of usage), fungal stains, insect infestation, humidity, fire etc damage the wood. As a result of these damages, the woods require to be repaired, maintained or replaced before its economic life ends (Richardson, 1987). For this reason, in most places the wood materials should be impregnated with the proper chemicals. In mines, as a result of the impregnation of the beech and spruce wood with watersoluble salts, the bending, tensile, and impact strength decreased a little whereas compression strength increased (Kollmann, 1959). In another research concerning the impregnation of pine, spruce, fir, beech, and poplar woods with Antrasen, it was found that, the compression strength increased by 6 to 40% and bending strength increased by 10 to 22% (Stabnikov, 1957). The tar oil increased the bending strength whereas the UA salts diminished the bending strength (Gillwald, 1961)
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