Lastnosti lesa bršljana

diplomsko delo - univerzitetni študij

Klemen Merhar (Author), Željko Gorišek (Reviewer), Primož Oven (Mentor)

Abstract

Raziskali smo tiste izbrane lastnosti lesa navadnega bršljana (Hedera helix L.), ki bi utegnile predvideti njegovo uporabo. Raziskali smo anatomsko zgradbo in makroskopske posebnosti, vlažnost v svežem stanju, gostoto, anizotropijo krčenja in nabrekanja, kazalnike dimenzijske stabilnosti ter tlačno in upogibno trdnost bršljanovega lesa. Raziskava je pokazala, da bršljanov les spada med polvenčasto porozne drevesne vrste. Gostota absolutno suhega lesa je 522 kg/m3. Vlažnost svežega lesa, ki jo zasledimo, znaša povprečno 92 %. Anizotropija krčenja in nabrekanja je zelo variirala, vendar lahko povzamemo, da so skrčki in nabreki primerljivi z lesovi z nižjo gostoto. Kazalniki dimenzijske stabilnosti so ugodni ali normalni, razen sorpcijskega kvocienta in vrednosti anizotropije, ki sta neugodna. Mehanske lastnosti lahko primerjamo z lipo, topolom in smreko. Bršljanov les je primeren za galanterijske izdelke.

Keywords

navadni bršljan;Hedera helix L.;mehanske lastnosti;vlažnost;sorpcija;gostota;

Data

Language:	Slovenian
Year of publishing:	2010
Source:	Ljubljana
Typology:	2.11 - Undergraduate Thesis
Organization:	UL BF - Biotechnical Faculty
Publisher:	[K. Merhar]
UDC:	630*812:582.794.2
COBISS:	1838217
Views:	1154
Downloads:	313
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	Wood properties of ivy
Secondary abstract:	We investigated those selected properties of plain wood ivy (Hedera helix L.),which could anticipate for its use. We studied the anatomical structure and macroscopic specialities, humidity in fresh state, density, shrinkage and swelling anisotropy, indicators of dimensional stability and compressive and flexural strength of ivy wood. The research showed that ivy wood is semi-ring-porous tree species. Absolutely dry wood density is 522 kg/m3. Average humidity of fresh wood is 92 %. Anisotropy of shrinkage and swelling is very varied, but the constrictions and swelling can be compared to woods with lower density. Dimensional stability indicators are favourable or normal, with the exception of sorption quotient and anisotropy, which are unfavourable. Mechanical properties can be compared with linden, poplar and spruce woods. Ivy wood is suitable for haberdashery products.
Secondary keywords:	ivy;Hedera helix L.;mechanical properties;humidity;sorption;density;
Type (COBISS):	Undergraduate thesis
Thesis comment:	Univ. v Ljubljani, Biotehniška fak., Oddelek za lesarstvo
Pages:	X, 43 f., [12] f. pril.
Keywords (UDC):	applied sciences;medicine;technology;uporabne znanosti;medicina;tehnika;agriculture and related sciences and techniques;forestry;farming;wildlife exploitation;kmetijstvo ter sorodne vede in tehnologije;forestry;gozdarstvo;forest products and their utilization;gozdni proizvodi in njihova uporaba;mathematics;natural sciences;naravoslovne vede;matematika;botany;botanika;systematic botany;sistematska botanika;rosidae;
ID:	21913