NTF, Department of Geology, Lj. (NTFGEO)
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Pospešeno propadanje apnencev v odvisnosti od temperature in vlage : diplomsko deloKrajnc, VesnaKamen je kot okrasni in gradbeni material spremljal človeka že od najstarejših časov dalje. V plemeniti obliki je bil dosegljiv le najpremožnejšim, z razvojem tehnologije pridobivanja in obdelave pa ... se je naravni kamen približal širšemu krogu ljudi, s čimer se je močno povečala tudi njegova uporaba. Vendar kamen v okolju, ki mu je izpostavljen, propada ali prepereva. Pri tem se kamnina topi, spreminjajo se ji mineralna sestava, trdnost, trdota, odsevna sposobnost polirane površine, struktura, tekstura in velikost zrn mineralov v kamnini. V slovenskih razmerah propadanje naravnega kamna še ni preiskano. V zadnjem času potekajo številni testi različnih vrst naravnega kamna, pri čemer moramo posebej omeniti pospešeno staranje kamnine. Rezultati tega testa nam dajo prvo informacijo o obstojnosti materiala. Za natančnejše analize moramo upoštevati tudi razne pline in soli ter zmrzal, ki močno pospešujejo propadanje kamnine. Preiskave so bile narejene na petih vrstah apnenca v Sloveniji. S pospešenim testom staranja smo simulirali staranje v naravi v obdobju dveh let. Posledice so se odražale v spremembi trdote in zmanjševanju mase vzorcev. Vzorci so zgubljali maso zaradi mehanskega odpadanja delcev kamnine, kot tudi zaradi topljenja sestavnih prvin. Sorazmerno se je zmanjševala tudi odsevna sposobnost polirane površine.Med preiskovanimi vrstami apnencev sta bila najbolj obstojna apnenca iz Lipice.Type of material - undergraduate thesis ; adult, seriousPublication and manufacture - Ljubljana : Univerza, NTF, Oddelek za geologijo, 1999Language - slovenianCOBISS.SI-ID - 204126
Author
Krajnc, Vesna
Other authors
Mirtič, Breda
Topics
Slovenija |
apnenec |
diplomske naloge |
naravni kamen |
obstojnost kamna |
decay |
limestone |
Slovenia |
natural stone
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NTF, Department of Geology, Lj. |
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Geologija M KRAJNC Vesna Pospešeno IN: 000012817 Geologija M KRAJNC Vesna Pospešeno IN: 000012817 |
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Mirtič, Breda | 07177 |
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