Vrednotenje relevantnih lastnosti lesenih lepljencev po enem letu izpostavitve na prostem : diplomsko delo = Evaluation of relevant properties of glued laminated timber after one year of outdoor exposure : B. Sc. thesis
Jelšnik, Jure
V diplomskem delu smo ovrednotili relevantne lastnosti lesenih lepljencev po enem letu izpostavitve na terenskem polju Oddelka za lesarstvo. Za primerjavo smo testirali referenčne vzorce, ki niso ...bili izpostavljeni zunanjim dejavnikom. Testirali smo lepljence iz lesa macesna, smrekovine in bukovine ter masiven les smrekovine. Lepljenci so bili zlepljeni z različnimi lepili (PVAc, PUR, MUF) in površinsko zaščiteni (debeloslojni premaz, Silvanolin, Silvacera). Zanimala nas je sprememba mehanskih in vizualnih lastnosti preizkušancev. Razkroj smo ocenili vizualno po standardu SIST EN 252. Mehanske lastnosti smo določili z univerzalnim testirnim strojem Zwick Roell Z100. Vzorce izdelane iz lepljencev in masivne smrekovine smo obremenili na tlak, lepilne spoje preizkušancev pa smo obremenili na tlačni strig. Po enem letu na lesu z izjemo bukovine ni zaznati izrazitega razkroja. Pri bukovini smo opazili razkroj prve stopnje. Tlačna trdnost lesa se ni občutno poslabšala. Strižna trdnost lepilnih spojev se lepljencem, zlepljenim s PVAc lepili v povprečju poslabša pri vseh preizkušancih, razen pri lepljencih premazanih z debeloslojnim premazom Remmers.
Type of material - undergraduate thesis
; adult, serious
Publication and manufacture - Ljubljana : [J. Jelšnik], 2018
Knjižnica BF za lesarstvo dv1 0000000108 IN: 020180149
Knjižnica BF za lesarstvo dv1 108 IN: 020180149
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