diplomsko delo
Aljaž Krznar (Author), Miha Humar (Reviewer), Boštjan Lesar (Mentor)

Abstract

Zadnje čase se vse več macesnovega lesa uporablja v gradbeništvu, na primer za izgradnjo fasad, teras, balkonskih ograj. V Sloveniji je še posebej priljubljena uporaba sibirskega macesna. Zato nas je v nalogi zanimala odpornost naravno in plantažno gojenega sibirskega macesna (Larix sibirica) ter alpskega macesna (Larix decidua) proti navlaževanju. Poleg macesna smo v raziskavo vključili še smrekovino obdelano s pripravki za pospešeno sivenje lesa. Na vzorcih naravno in plantažno gojenega sibirskega macesna, alpskega macesna, navadne smrekovine in predhodno obdelane smrekovine smo izvajali različna testiranja odpornosti proti navlaževanju. Pri uravnovešanju vzorcev macesnov pri visoki zračni vlažnosti smo ugotovili, da je plantažno gojen sibirski macesen navzel največ vode, in se je najhitreje uravnovešal. Ob dolgotrajnem navzemu vode smo ugotovili, da se plantažno gojen in naravno rasel sibirski macesen navlažujeta enako hitro. Po končanih meritvah opazimo, da se najbolj navlaži plantažno gojen sibirski macesen, najmanj pa alpski macesen. Rezultati prikazujejo, da je plantažno gojen sibirski macesen bolj vodoodbojen kot alpski macesen ter sibirski macesen. Izračun predvidene življenjske dobe na podlagi zgoraj omenjenih testiranj kaže, da ima alpski macesen daljšo življenjsko dobo kot sibirski macesen iz naravnih rastišč ali pa plantažni macesen.

Keywords

macesen;pospešeno sivenje;navlaževanje;sorpcijske lastnosti;odpornost;

Data

Language: Slovenian
Year of publishing:
Typology: 2.11 - Undergraduate Thesis
Organization: UL BF - Biotechnical Faculty
Publisher: [A. Krznar]
UDC: 630*841.4:630*814.1
COBISS: 27332099 Link will open in a new window
Views: 476
Downloads: 97
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Other data

Secondary language: English
Secondary title: Resistance to water uptake of wood of Siberian larch from natural sites and plantations
Secondary abstract: In recent years larch wood is more often used in building projects, as seen in building façades, terraces and balcony fences. In Slovenia, the use of the Siberian larch is especially popular. In this thesis, I decided to research the resilience of wood against moisture using the example of the Siberian larch (Larix sibirica) grown naturally and on plantations, as well as the European larch (Larix decidua). Along with larch, spruce wood processed to grey at an accelerated rate was also integrated into the research. Various tests relating to moisture absorption were made on samples of Siberian larch grown naturally and on plantations, European larch, ordinary spruce and treated spruce wood. Siberian larch grown on a plantation had the highest moisture content at conditioning in a chamber above distilled water. This means this sample reached equilibrium faster than the others used in a research. We found out that the two types of Siberian larch, natural and plantation, absorb moisture at the same rate after long exposure to water uptake. The final measurements showed that the plantation Siberian larch absorbs moisture the most and the European larch absorbs it the least. The results indicated that the plantation Siberian larch is more hydrophobic than the European larch and naturally grown Siberian larch. The wetting ability of the tested materials was examined with regard to the resistance dose, with European larch showing the highest resistance dose.
Secondary keywords: larch;accelerated graying;moistening;sorption properties;resistence;
Type (COBISS): Bachelor thesis/paper
Study programme: 0
Thesis comment: Univ. v Ljubljani, Biotehniška fak., Oddelek za lesarstvo
Pages: VII, 38 f.
ID: 12023767