BF, Dept. of Wood Technology, Lj. (BFLES)
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Izbrane fizikalne lastnosti starega hrastovega konstrukcijskega lesa : magistrsko delo = Selected physical properties of oak wood from historical constructions : M. Sc. thesisDremelj, Matjaž, 1992-Raziskali smo izbrane fizikalne lastnosti konstrukcijskega lesa hrasta (Quercus sp.) po staranju. Izbrali smo les od nedavno posekanega do starosti 600 let, iz konstrukcij po Sloveniji. Orientirane ... odrezke lesa dimenzij 40 x 40 x 5 mm iz notranjih delov tramov smo v ta namen dendrokronološko datirali ter lesu določili gostoto, barvo (vizualno in po CIELab standardu), dimenzijsko stabilnost in sorpcijske lastnosti. Vizualno smo ugotovili, da je starejša hrastova jedrovina temnejša. To smo potrdili tudi z linearnim nižanjem svetlosti barve L* s staranjem lesa. Pri starejšem hrastovem lesu smo po večini potrdili večjo dimenzijsko stabilnost v tangencialni smeri, ter nižjo anizotropijo krčenja in nižji sorpcijski koeficient. V radialni smeri spremembe v dimenzijski stabilnosti lesa niso bile potrjene. Ravnovesna vlažnost hrastovega lesa se je s staranjem na celotnem higroskopskem območju znižala, zmanjšala pa se je tudi sorpcijska histereza. Gostota hrastovega lesa se s staranjem ni spreminjala. Ne glede na starost lesa je gostota naraščala s širino branik ter z večanjem deleža kasnega lesa. Raziskava nakazuje, da imajo velik vpliv na dimenzijsko stabilnost in higroskopnost lesa tudi lokalne razmere, ki delujejo na les v času uporabe.Type of material - master's thesis ; adult, seriousPublication and manufacture - Ljubljana : [M. Dremelj], 2018Language - slovenianCOBISS.SI-ID - 2864521
Author
Dremelj, Matjaž, 1992-
Other authors
Straže, Aleš |
Čufar, Katarina |
Gorišek, Željko
Topics
les |
hrast |
Quercus |
staranje |
barva |
dimenzijska stabilnost |
sorpcija |
sorpcija |
wood |
oak |
aging |
colour |
dimensional stability |
sorption |
sorption
Call number – location, accession no. ... |
Copy status | Reservation |
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Knjižnica BF za lesarstvo du2 0000000039 IN: 020180009 Knjižnica BF za lesarstvo du2 39 IN: 020180009 |
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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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Dremelj, Matjaž, 1992- | |
Straže, Aleš | 18149 |
Čufar, Katarina | 02937 |
Gorišek, Željko | 05732 |
Source: Personal bibliographies
and: SICRIS
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