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Lastnosti lesa po 7 letih izpostavitve na prostem [Elektronski vir] : magistrsko delo = Properties of wood after 7 years of outdoor exposure : M. Sc. ThesisJelšnik, JureMagistrsko delo obravnava lastnosti lesa po sedmih letih izpostavitve na prostem na terenskem polju Oddelka za lesarstvo. Testirali smo lesene vzorce smrekovine, ki je bila zaščitena z dvema tipoma ... bakrovih pripravkov (CCB in CuE pripravek) dveh različnih koncentracij (wCu = 0.25 % in 0.125 %). Les je bil izpostavljen v 3. in 4. razredu uporabe. Za primerjavo smo testirali kontrolne vzorce, ki niso bili izpostavljeni zunanjim dejavnikom. Cilji naloge so bili testirati les po sedmih letih izpostavitve na prostem ter izmeriti vsebnost bakra v lesu, določiti mehanske lastnosti lesa in ovrednotiti stopnjo razkrojenosti z mikroskopsko analizo. Rezultati so pokazali, da se je del bakrovih učinkovin spral iz lesa. Najintenzivnejše izpiranje smo opazili pri lesu impregniranem z zaščitnimi sredstvi z nizkimi koncentracijami v stiku z zemljo. Pri lesu izpostavljenim v tretjem razredu uporabe, je bilo izpiranje manj opazno. Tekom izpostavitve je les razpokal. Visoke koncentracije bakrovih učinkovin do določene mere preprečujejo pojav razpok. Mehanske lastnosti lesa izpostavljenega v tretjem razredu so bile boljše kot tistega v četrtem razredu uporabe. Les zaščiten s CCB in izpostavljen v četrtem razredu uporabe je razpokal, pri nižjih koncentracijah se je pojavila obarvanost, medtem ko so se pri s CuE zaščitenem lesu pojavili močan razkroj, zaznali smo spremembe barve in pri nekaj podzemnih delih vzorcev je prišlo do propadaType of material - master's thesis ; adult, seriousPublication and manufacture - Ljubljana : [J. Jelšnik], 2022Language - slovenianCOBISS.SI-ID - 124326915
Author
Jelšnik, Jure
Other authors
Humar, Miha |
Kržišnik, Davor |
Lesar, Boštjan
Topics
naravno staran les |
zaščita lesa |
CuE |
CCB |
mehanske lastnosti |
gostota |
pH |
natural aged wood |
wood protection |
CuE |
CCB |
mechanical properties |
density |
pH
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Year | Impact factor | Edition | Category | Classification | ||||
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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DRS, in which the journal is indexed
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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Jelšnik, Jure | ![]() |
Humar, Miha | 19106 |
Kržišnik, Davor | 37425 |
Lesar, Boštjan | 28503 |
Source: Personal bibliographies
and: SICRIS
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