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Spremembe fizikalnih lastnosti hrastovega lesa iz zgodovinskih konstrukcij v življenjski dobi = Changes in physical properties of oak wood from historical constructions during service lifeStraže, Aleš ...Raziskali smo fizikalne lastnosti hrastovega lesa (Quercus sp.), pri katerem je od poseka minilo od 4 do 512 let in smo ga razdelili v stoletne starostne skupine 100-600. Mlajši les smo pridobili ob ... poseku dreves, starejši les pa iz zgodovinskih konstrukcij v Sloveniji. Izbrani les smo najprej dendrokronološko datirali, izdelali normirane vzorce za analize ter določili gostoto, barvo, dimenzijsko stabilnost in sorpcijske lastnosti. Vizualno in v CIELab barvnem prostoru smo ugotovili, da je barva jedrovine s starostjo postala temnejša. Pri starem hrastovem lesu smo ugotovili tudi manjšo higroskopnost in izboljšano dimenzijsko stabilnost, zlasti v tangencialni smeri, ter manjšo prečno krčitveno anizotropijo.Gostota hrastovega lesa se s staranjem ni spremenila, odvisna pa je bila od širine branik (naraščala je z večanjem deleža kasnega lesa). Rezultati nakazujejo, da na dimenzijsko stabilnost in higroskopnost poleg procesov staranja ver-jetno vpliva tudi mesto vgradnje in klimatska nihanja tekom uporabe lesa.Source: Les = Wood. - ISSN 0024-1067 (Letn. 67, št. 1, 2018, str. 5-14)Type of material - article, component part ; adult, seriousPublish date - 2018Language - slovenianCOBISS.SI-ID - 2921609
Author
Straže, Aleš |
Dremelj, Matjaž, 1992- |
Žveplan, Ervin |
Čufar, Katarina
Topics
les |
hrast |
lesena gradnja |
Quercus sp. |
staranje |
barva |
dimenzijska stabilnost |
sorpcija |
sorpcija
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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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Straže, Aleš | 18149 |
Dremelj, Matjaž, 1992- | |
Žveplan, Ervin | 39652 |
Čufar, Katarina | 02937 |
Source: Personal bibliographies
and: SICRIS
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