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Naravna odpornost, delež ekstraktivov in izbrane mehanske lastnosti že uporabljene jedrovine hrasta : diplomski projekt = Natural durability, extractive ratio and selected mechanical properties of already used oak heartwood : B. Sc. thesisBregar, Matevž, 1988-Od nekdaj spada les med najpomembnejše gradbene materiale. V času zavedanja podnebnih sprememb, ki jih je povzročil človek, še dodatno pridobiva na pomenu kot okoljsko zelo ustrezen material. Njegova ... raba ne obremenjuje okolja in je zelo ugodna za bivanje. Namen projekta je bil ugotoviti, kakšne so izbrane lastnosti hrastovine po več desetletjih uporabe. V ta namen smo uporabili približno 150 let star podporni del ostrešja (roka), izdelanega iz hrastove jedrovine. Fungicidne lastnosti smo ugotavljali z izpostavitvijo 5 različnim glivam; Gloeophyllum trabeum, Antrodia vaillantii, Hypoksylon fragiforme, Pleurotus ostreatus in Trametes versicolor. Mehanske lastnosti (upogibno trdnost, modul elastičnosti in tlačno trdnost) smo določili z univerzalnim testirnim strojem Zwick, s tenziometrom pa kapilarni navzem vode. Opravili smo tudi ekstrakcijo po Soxhletu s 3 topili: vodo, 70 % metanolom in cikloheksanom. Stara hrastoina ima slabšo odpornost na lesne glive, najbolj je to izrazito pri delovanju glive G. trabeum. S staranjem pa pada delež ekstraktivnih snovi.Type of material - undergraduate thesis ; adult, seriousPublication and manufacture - Ljubljana : [M. Bregar], 2015Language - slovenianCOBISS.SI-ID - 2407817
Author
Bregar, Matevž, 1988-
Other authors
Humar, Miha |
Pohleven, Franc
Topics
naravna odpornost |
jedrovina |
ekstraktivi |
hrast |
natural durability |
heartwood |
extractives |
oak
Library/institution |
City | Acronym | For loan | Other holdings |
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BF, Department of Wood Science and Technology, Lj. | Ljubljana | BFLES |
reading room 1 cop.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Bregar, Matevž, 1988- | |
Humar, Miha | 19106 |
Pohleven, Franc | 05248 |
Source: Personal bibliographies
and: SICRIS
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