NTF, Department of Geology, Lj. (NTFGEO)
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Petrološke in mineraloške značilnosti kamnoloma Velika Pirešica ; diplomsko delo = Petrological and mineralogical characteristics of quarry Velika PirešicaŠtorman, MartinaV kamnolomu Velika Pirešica, ki je v lasti CM Celje, d. d., odkopavajo tehnični kamen, apnenec in dolomit. Kamnina predstavlja osnovno surovino za proizvodnjo asfaltnih in betonskih mešanic, poleg ... tega pridobivajo kamniti drobir in druge mineralne agregate ter apnenčevo moko in apnenčevo mikro polnilo. Apnencev in dolomitov med sabo ne ločujejo, ker med njimi ni ostre meje, prehod iz enega v drugega je postopen preko dolomitiziranega apnenca. V svoji diplomski nalogi sem analizirala karbonatne različke v kamnolomu gledena heterogeno sestavo. Med apnencem se v spodnjih etažah kamnoloma pojavlja sivo zelen drobnozrnat tuf, katerega mineralno sestavo smo ugotavljali z rentgensko praškovno difrakcijo. Geokemične analize so bile opravljene z namenom določanja kemične sestave in prisotnosti nečistoč, ki bi vplivale na nadaljnjo uporabo kamnine za betone in asfaltne zmesi. Na podlagi petrografsko-sedimentoloških analiz smo vzorce uvrstili v naslednje tipe kamnin: srednjekristalni dolomit s sledovi alokemov, stromatolitni apnenec, dolomitno apnenčeva breča, biopelintramikritni apnenec, pelintrabiosparitni apnenec, pelintrabiomikritni apnenec in intraoosparitni apnenec. Z rentgensko praškovno difrakcijo smo določili naslednje minerale: kalcit, kremen, illit/muskovit in klinoklor. Geokemične analize so pokazale, da se v kamnolomu pojavljajo čisti apnenec, dolomit in dolomitno apnenčeva breča ter tuf. Apnenci. dolomiti in dolomitno apnenčeva breča so kemično stabilni agregati, ki ne vsebujejo sulfatov, kloridov, sljud in kremena. Organske primesi niso prisotne, vsebnosti Al2O3 so pod mejo škodljivosti v vseh vzorcih, izjema je le svetlosivo zelen drobnozrnat tuf SiO2, Al2O3, Fe2O3, K2O ter ostale sledne prvine. REE in težke kovine so vezane predvsem na minerale glin. V zgornjih etažah, kjer je material bolj preperel in s tem manj kompakten, je njegova uporabnost bolj primerna za nasipe in nevezane nosilne plasti. V spodnjem delu kamnoloma pa se pojavlja manj pretrt apnenec,ki je primernejši za betonske in asfaltne agregate. Glede na dosedanje preiskave uporabnosti kamnine sta apnenec in dolomit kakovosten surovinski gradbeni material, ki ustrezata zahtevam kakovosti za pripravo agregatov za betone, malte, asfaltne plasti in nevezane nosilne plasti.Type of material - undergraduate thesis ; adult, seriousPublication and manufacture - Ljubljana : [M. Štorman], avg. 2010Language - slovenianCOBISS.SI-ID - 843614
Author
Štorman, Martina
Other authors
Dolenec, Matej |
Dobnikar, Meta, 1964-
Topics
petrološke značilnosti |
mineraloške značilnosti |
kamnolomi |
Veilka Pirešica
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NTF, Department of Geology, Lj. |
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Call number – location, accession no. ... |
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Geologija D ŠTORMAN Martina Petrološke IN: 000014748 Geologija D ŠTORMAN Martina Petrološke IN: 000014748 |
available - outside loan, loan period: 14 days
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Štorman, Martina | |
Dolenec, Matej | 21372 |
Dobnikar, Meta, 1964- | 11447 |
Source: Personal bibliographies
and: SICRIS
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