Spremljanje vlažnosti lesa v lopi, izdelani iz termično modificiranega lesa : diplomski projekt

Jarc, Tadej (avtor), Humar, Miha (mentor), Thaler, Nejc (komentor), Pohleven, Franc (recenzent)

Kot vsaka gradnja ima tudi gradnja z lesom svoje zakonitosti in omejitve. Ker želimo, da je življenjska doba čim daljša, moramo poznati zakonitosti lesa kot gradbenega materiala. Les je obnovljiv vir in ekološko malo obremenjujoč za okolje. Kot naravni material je podvržen razkroju. Predvsem ga okužijo razne vrste gliv in plesni. Za vse je značilno, da dobro uspevajo le ob določeni lesni vlažnosti (od 30 % do 60 %) in temperaturi (med 23 °C in 30 °C). Les ima že svojo naravno odpornost, vendar pa iz ekonomskih razlogov želimo to lastnost še izboljšati. Najbolj poznan postopek za izboljšanje naravne odpornosti lesa je impregnacija z biocidi. V sodobnem času pa se pojavlja postopek termične modifikacije, ki obeta zelo dobre rezultate. Če želimo zadržati lesno vlažnost pod kritično mejo, jo moramo meriti z različnimi merilniki. Najbolj poznani so uporovni merilniki. Na objektih Partizanske bolnice Franja in Mozirskega gaja je bil kot merilnik uporabljen Gigamodul z zapisovalnikom Thermofox proizvajalca Scanntronik. Oba objekta sta izdelana iz smrekovine. Objekt Partizanska bolnica Franja stoji v ozki grapi, v neposredni bližini tekoče vode in je v celoti izdelan iz impregniranega lesa, medtem ko je objekt v Mozirskem gaju izdelan iz termično modificiranega lesa, le dva manjša elementa sta izdelana iz impregniranega lesa, kar nam je služilo kot neposredna primerjava med impregniranim in termično modificiranim lesom. Ugotovili smo, da ima termično modificiran les nižjo vlažnost od impregniranega lesa in je tako zagotovljena daljša življenjska doba

• Jezik: Slovenski jezik
• Ključne besede: termično modificiran les, vlažnost, okužba z glivami
• Vrsta gradiva: Delo diplomskega projekta/projektno delo
• Tipologija: 2.11 - Diplomsko delo
• Organizacija: BF - Biotehniška fakulteta
• Kraj izida: Ljubljana
• Založnik: [T. Jarc]
• Leto izida: 2015
• Št. strani: VII, 34 f.
• PID: 20.500.12556/RUL-117696
• UDK: 630*843
• COBISS.SI-ID: 2433161
• Datum objave v RUL: 22.07.2020

JARC, Tadej, 2015, Spremljanje vlažnosti lesa v lopi, izdelani iz termično modificiranega lesa : diplomski projekt [na spletu]. Diplomsko delo. Ljubljana : T. Jarc. [Dostopano 21 april 2025]. Pridobljeno s: https://repozitorij.uni-lj.si/IzpisGradiva.php?lang=slv&id=117696

Sekundarni jezik

• Jezik: Angleški jezik
• Naslov: Monitoring of wood moisture content in hut made of thermaly modified wood

Izvleček

Wooden buildings have their own properties and expected lifespan, much like buildings made using other materials. In order for that lifespan to be as long as possible, we have to understand the properties of wood as a building material. It is renewable and eco-friendly, but prone to decay and attacks from various fungi and moulds. Those fungi and moulds have some common properties such as the fact that they thrive in environments with high humidity (from 30 % to 60 %) and temperatures between 23 °C and 30 °C. Wood has its own natural resistance to mould, but for economic reasons we want to improve it. Best known procedure for improving wood%s natural resistance is impregnation with biocides. Another procedure that emerged recently is thermal modification, which promises very good results. If we wish to keep humidity below critical level, we have to measure it. That can be done with various gauges. Most well-known ones are resistive. On objects of Franja Partisan Hospital and the hut in Mozirski gaj we used the Gigamodule gauge with a Thermofox data logger manufactured by Scanntronik. Both objects are made from spruce wood. Franja Partisan Hospital is located in a narrow valley, right next to running water; it is built from impregnated wood, while the hut in Mozirski gaj from thermally modified wood, with the exception of 2 small elements built from impregnated wood. Those 2 buildings were used as a direct comparison between impregnated and thermally modified wood. We found that humidity of thermally modified wood is lower than that of impregnated wood, which means that we can expect its lifespan to be longer

• Ključne besede: thermaly modified wood, humidity, fungi infection