20.500.12556/RUL-173926 Odziv stenske obloge iz starega lesa na ogenj Reaction to fire of old wood wall cladding V gradbeništvu in arhitekturi sodobni trendi stremijo k ponovni uporabi starega lesa v notranjih in zunanjih prostorih. Les lahko ponovno uporabimo v številne namene. V interierju ga lahko uporabimo za pohištvo, stensko ali stropno oblogo. Prednosti starega lesa so boljša dimenzijska stabilnost, estetski videz in zgodovinska vrednost. Pri ponovni uporabi lesa se poraja vprašanje, kako se s staranjem spreminja njegovo obnašanje v primeru požara. Za primerjavo požarnih lastnosti različno starega lesa smo uporabili konusni kalorimeter, s pomočjo katerega ovrednotimo odziv materiala na ogenj. Za testiranje smo uporabili les macesna in smreke. Za primerjavo smo vzeli recenten les, ki smo ga površinsko obdelali z različnimi tehnikami (skobljanje, brušenje in krtačenje), da bi lažje primerjali različno hrapavost površine med vzorci različnih starosti. Stari primerjalni vzorci so bili izpostavljeni vremenskim vplivom 10, 40, 80 ali 100 let. S testiranjem na konusnem kalorimetru smo ugotovili, da se star les vžge nekoliko prej kot recenten les, vendar sprosti manj toplote v primeru požara. Končna klasifikacija je pokazala, da ga lahko uvrstimo v isti razred kot recenten les. Na podlagi rezultatov lahko zaključimo, da je star les kljub spremembam zaradi staranja primeren za nadaljnjo uporabo v gradbeništvu in arhitekturi. In construction and architecture, modern trends are moving toward the reuse of old wood in both interior and exterior spaces. Wood can be reused for many purposes. In interiors, it can serve as furniture, wall cladding, or ceiling covering. The advantages of old wood include better dimensional stability, aesthetic appearance, and historical value. However, when reusing wood, the question arises of how its behavior in the event of fire changes with age. To compare the fire properties of wood of different ages, we used a cone calorimeter, which allows us to evaluate a material’s reaction to fire. For testing, we used larch and spruce wood. For comparison, we took fresh wood, which we surface-treated with different techniques (planing, sanding, and brushing) to more easily compare surface roughness between samples of different ages. The old comparative samples had been exposed to weathering for 10, 40, 80, or 100 years. Testing with the cone calorimeter showed that old wood ignites somewhat earlier than fresh wood but releases less heat in the event of fire. The final classification indicated that it can be placed in the same category as fresh wood. Based on the results, we can conclude that despite the changes caused by aging, old wood is still suitable for further use in construction and architecture. odziv na ogenj star les ponovna uporaba reaction to fire old wood reuse true false false [M. Vrhovec] Slovenski jezik Angleški jezik Magistrsko delo/naloga 2025-09-25 08:16:18 2025-09-25 08:16:22 2025-11-15 03:53:12 0000-00-00 00:00:00 2025 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 630*843 266207 251877123 53521.pdf 53521.pdf 1 25DB71A9B544140B5BA656E2EE4823BE f9980d0a500f4818a0ff84622e7997f6997018ed2a8ad674148c96b5fb49fd8a f8728c08-99d6-11f0-9328-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=218630 Biotehniška fakulteta 0 0 0