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Vpliv širine branik smrekovine in macesnovine na delež ekstraktivov in naravno odpornost na glive razkrojevalke : diplomsko delo - visokošolski strokovni študij = Influence of ring width on portion of extractives and natural durability of spruce and larch wood against wood decay fungi : graduation thesis - higher professional studiesSitar, RobertSmrekovina in macesnovina spadata med tiste vrste lesa, ki se pri nas v obliki masivnega lesa najpogosteje uporabljajo kot gradbeni, konstrukcijski in stavbni les. Za takšen namen uporabe je poleg ... mehanskih lastnosti lesa zelo pomembna tudi naravna odpornost lesa. Znano je, da je smrekovina neodporna drevesna vrsta, medtem ko macesnovina spada v razred zmerno odpornih drevesnih vrst. Ker se pri obeh drevesnih vrstah mehanske lastnosti lesa izboljšujejo (povečujejo) z gostoto oz. z ožanjem branik, nas je zanimalo, kakšen vpliv ima pri teh 2 lesnih vrstah širina branik na naravno odpornost lesa in hkrati tudi na delež vsebnosti ekstraktivov, katerim na splošno predpisujemo največji vpliv na naravno odpornost lesa. Te vplive smo ugotavljali v skladu s standardom SIST EN 113. Izdelali smo vzorce lesa smreke in macesna z različnimi širinami branik in jih izpostavili 3 vrstam gliv razkrojevalk. Nekaterim vzorcem lesa smo pred izpostavitvijo 3 glivam razkrojevalkam z ekstrakcijo izločili ekstraktive in tako poskušali določiti delež ekstraktivov za posamezen razred širin branik. Ugotovili smo, da širina branik obeh lesnih vrst nima vpliva na delež ekstraktivov v lesu. Z gravimetrično metodo smo po izpostavitvi glivam razkrojevalkam preučevali vpliv širine branik na naravno odpornost obeh lesnih vrst in ugotovili, da splošnega značilnega vpliva ni.Type of material - undergraduate thesis ; adult, seriousPublication and manufacture - Ljubljana : [R. Sitar], 2013Language - slovenianCOBISS.SI-ID - 2141321
Author
Sitar, Robert
Other authors
Humar, Miha |
Oven, Primož
Topics
les |
smreka |
macesen |
širina branik |
gostota |
lesne glive |
razkroj |
izguba mase |
wood |
spruce wood |
larch wood |
ring-width |
density |
wood fungi |
decay |
extractive
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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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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Sitar, Robert | |
Humar, Miha | 19106 |
Oven, Primož | 11223 |
Source: Personal bibliographies
and: SICRIS
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