izpis_h1_title_alt

Tehnološke lastnosti in uporabnost lesa velikega pajesena v primerjavi z lesom velikega jesena
ID Gorišek, Željko (Author), ID Plavčak, Denis (Author), ID Straže, Aleš (Author), ID Merela, Maks (Author)

.pdfPDF - Presentation file, Download (2,82 MB)
MD5: 7A759D31D3A7B783557B4F7A4FDBB567
URLURL - Source URL, Visit https://journals.uni-lj.si/les-wood/article/view/12168 This link opens in a new window

Abstract
Veliki pajesen (Ailanthus altissima (Mill.) Swingle)) spada med najbolj invazivne tujerodne drevesne vrste v Evropi in pri nas. Zaradi velike obnovitvene moči se hitro širi, predvsem na golosekih, na opuščenih kmetijskih površinah ter ob prometnih poteh. Botanično se razlikuje od velikega jesena (Fraxinus excelsior L.), sicer pa nanj značilno spominja z izgledom drevesa kot tudi s strukturnimi lastnostmi lesa. Zaradi tega smo primerjalno analizirali vizualne, anatomske in nekatere fizikalne ter mehanske lastnosti obeh lesnih vrst. V vseh anatomskih ravninah smo potrdili značilno vizualno in barvnometrično podobnost obeh proučevanih lesov. Anatomsko se raziskani venčasto porozni lesni vrsti razlikujeta predvsem v velikosti in razporedu trahej ter parenhimskega tkiva. Lesova imata podobni gostoti, pajesen pa je bolj dimenzijsko nestabilen. Mehanske lastnosti lesa pajesena so le nekoliko slabše od tistih pri lesu velikega jesena. Določili pa smo 20 % manjšo upogibno togost ter povprečno 50 % nižjo trdoto lesa pajesena v primerjavi z lesom velikega jesena. Nasprotno pa je bila strižna trdnost pri pajesenu 30 % višja. Glede na ugotovljene lastnosti je les pajesena uporaben za predelavo v celulozo in papir, razne lesne plošče in delno za manj obremenjene konstrukcije, ki niso izpostavljene drastičnim klimatskim razmeram.

Language:Slovenian
Keywords:les, veliki pajesen, Ailanthus altissima, veliki jesen, Fraxinus excelsior, anatomija lesa, fizikalne lastnosti, mehanske lastnosti, uporaba
Work type:Article
Typology:1.01 - Original Scientific Article
Organization:BF - Biotechnical Faculty
Publication status:Published
Publication version:Version of Record
Year:2018
Number of pages:Str. 29-44
Numbering:Letn. 67, št. 2
PID:20.500.12556/RUL-126666 This link opens in a new window
UDC:630*812:630*181.1:176.1 Ailanthus altissima
ISSN on article:0024-1067
COBISS.SI-ID:2993545 This link opens in a new window
Publication date in RUL:30.04.2021
Views:1902
Downloads:211
Metadata:XML RDF-CHPDL DC-XML DC-RDF
:
Copy citation
Share:Bookmark and Share

Record is a part of a journal

Title:Les
Shortened title:Les
Publisher:Zveza društev inženirjev in tehnikov gozdarstva in lesarstva Slovenije, Zveza društev inženirjev in tehnikov gozdarstva in lesarstva Slovenije, Biotehniška fakulteta, Oddelek za lesarstvo, Založba Univerze, Biotehniška fakulteta, Oddelek za lesarstvo, Založba Univerze
ISSN:0024-1067
COBISS.SI-ID:13940224 This link opens in a new window

Licences

License:CC BY 4.0, Creative Commons Attribution 4.0 International
Link:http://creativecommons.org/licenses/by/4.0/
Description:This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
Licensing start date:30.04.2021

Secondary language

Language:English
Title:Technological properties and usability of Chinese sumac wood in comparison with ash wood
Abstract:
Chinese sumac (Ailanthus altissima (Mill.) Swingle) is one of the most invasive alien species in Europe, and also in Slovenia. Due to its great renewal power the species is spreading rapidly, especially in abandoned agricultural and forest areas and along the traffic routes. It is botanically different from the European ash (Fraxinus excelsior L.), but it has similar tree habitus as well as similar structural characteristics of the wood. For this reason, we analysed the visual, anatomical and some physical and mechanical properties of both wood species. In all anatomical planes, the typical visual and colorimetric similarity of both studied woods was confirmed. Anatomically both ring porous wood species differ mainly in size and distribution of vessels, axial parenchyma and ray tissue. Wood of both species has a similar density as well, but the Chinese sumac has greater shrinkage. Some of the mechanical properties are comparable, although Chinese sumac wood has a lower modulus of elasticity and hardness and greater shear strength than ash wood. We can recommend that the wood of Chinese sumac can be used for production of pulp and paper, various panels and partly for less loaded constructions, which are not exposed to drastic climatic variability.

Keywords:Chinese sumac, wood, European ash, wood anatomy, physical propertes, mechanical propertes, use

Projects

Funder:ARRS - Slovenian Research Agency
Project number:P4-0015
Name:Les in lignocelulozni kompoziti

Similar documents

Similar works from RUL:
Similar works from other Slovenian collections:

Back