diplomsko delo
Žiga Zabukošek Počivalšek (Author), Milan Šernek (Reviewer), Miha Humar (Mentor)

Abstract

Namen te diplomske naloge je bil oceniti in ugotoviti stanje križno lepljenih plošč in mozničene plošče po sedmih letih izpostavitve pogojem, ki ustrezajo tretjemu razredu izpostavitve, kot ga definira SIST EN 355. Križno lepljeni plošči sta bili pred začetkom izpostavitve zaščiteni, ena s pripravkom iz voska druga s Silvanolinom. Med izpostavitvijo smo merili vlažnost v ploščah z namenom, da povežemo razkroj z vlažnostjo nad 25 %, ki je potrebna za razkroj lesa. Po koncu izpostavitve smo iz plošč izžagali vzorce za vizualno, mikroskopsko in hiperspektralno analizo ter vzorce za testiranje tlačne, in strižne trdnosti ter vsebnosti bakra v zunanjih slojih. Meritve vlažnosti so pokazale, da bi se razkroj lahko pojavil, kar smo tudi potrdili z vizualno analizo. Razkroj je bil minimalen, največ ga je bilo spodnjem in zgornjem delu plošč in na mestu kjer je bila pritrjena merilna omarica in je za omarico zatekala voda. Na srednjem delu plošč razkroja ni bilo.

Keywords

križno lepljen les;križno mozničen les;vlažnost;razkroj;vosek;Silvanolin;

Data

Language: Slovenian
Year of publishing:
Typology: 2.11 - Undergraduate Thesis
Organization: UL BF - Biotechnical Faculty
Publisher: [Ž. Zabukošek Počivalšek]
UDC: 630*814.1:841.4
COBISS: 209992451 Link will open in a new window
Views: 54
Downloads: 36
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Other data

Secondary language: English
Secondary title: Condition assessment of cross-laminated timber after seven years of exposure in use in class 3
Secondary abstract: The purpose of this thesis was to assess and determine the condition of cross-laminated timber and dowel-laminated timber after seven years of exposure to conditions corresponding to the third exposure class. Before exposure, one of the cross-laminated panels was treated with a wax preparation, and the other with Silvanolin. During the exposure period, the moisture levels in the panels were measured to correlate decay with moisture levels above 25%, which is necessary for wood decay. After the exposure period, samples were cut from the panels for visual, microscopic, and hyperfocal analysis, as well as for testing the compression, shear strength, and copper content in the outer layers. Moisture measurements indicated that decay could occur, which was confirmed by the visual analysis. The decay was minimal, with the most significant deterioration observed in the lower and upper parts of the panels. There was no decay in the middle part of the panels.
Secondary keywords: cross-laminated timber;dowel-laminated timber;moisture;decay;wax;Silvanolin;
Type (COBISS): Bachelor thesis/paper
Study programme: 0
Embargo end date (OpenAIRE): 1970-01-01
Thesis comment: Univ. v Ljubljani, Biotehniška fak., Oddelek za lesarstvo
Pages: 1 spletni vir (1 datoteka PDF (XI, 33 str.))
ID: 25096024