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V zadnjih letih se je v Sloveniji zelo povečala gradacija gozdov zaradi delovanja smrekovega lubadarja. Les lubadark na trgu dosega nižjo ceno, kot n-razvrednoten les. Uporaba lesa lubadark je v veliki meri odvisna od njegovih lastnosti. Zato smo pomodrelem lesu in kontrolnemu nepomodrelem lesu določili klasične sorpcijske lastnosti, dinamično sorpcijo vodne pare, kapilarni vlek, lastnosti namakanja in odpornost proti glivam razkrojevalkam ter upogibno trdnost in tlačno trdnost. Na podlagi vseh naštetih parametrov smo ugotovili, da pomodrel les hitreje vpija vodo, a ima še vedno enake mehanske lastnosti kot nepomodrel les. In the recent years the damage of forest due to the bark beetles attack has increased considerably. Bark beetle damaged wood has considerably lower price than non-damaged wood. However, the use of such material depends on its relevant properties. Therefore, classic sorption properties, dynamic sorption of water vapour, capillary water uptake, long-term water uptake, durability, bending strength and compressive strength on control and bark beetles damaged spruce wood were determined. Based on all of these parameters, we can conclude that bark beetle damaged wood absorbs more liquid water, but has comparable mechanical properties as reference spruce wood. |
