{"?xml":{"@version":"1.0"},"edm:RDF":{"@xmlns:dc":"http://purl.org/dc/elements/1.1/","@xmlns:edm":"http://www.europeana.eu/schemas/edm/","@xmlns:wgs84_pos":"http://www.w3.org/2003/01/geo/wgs84_pos","@xmlns:foaf":"http://xmlns.com/foaf/0.1/","@xmlns:rdaGr2":"http://rdvocab.info/ElementsGr2","@xmlns:oai":"http://www.openarchives.org/OAI/2.0/","@xmlns:owl":"http://www.w3.org/2002/07/owl#","@xmlns:rdf":"http://www.w3.org/1999/02/22-rdf-syntax-ns#","@xmlns:ore":"http://www.openarchives.org/ore/terms/","@xmlns:skos":"http://www.w3.org/2004/02/skos/core#","@xmlns:dcterms":"http://purl.org/dc/terms/","edm:WebResource":[{"@rdf:about":"http://www.dlib.si/stream/URN:NBN:SI:DOC-IMJ9DAQJ/012a9726-986d-4bf3-bd80-7373b395d396/PDF","dcterms:extent":"264 KB"},{"@rdf:about":"http://www.dlib.si/stream/URN:NBN:SI:DOC-IMJ9DAQJ/d5d8a193-b9c4-4833-9304-ac8166d0115f/TEXT","dcterms:extent":"25 KB"}],"edm:TimeSpan":{"@rdf:about":"2000-2024","edm:begin":{"@xml:lang":"en","#text":"2000"},"edm:end":{"@xml:lang":"en","#text":"2024"}},"edm:ProvidedCHO":{"@rdf:about":"URN:NBN:SI:DOC-IMJ9DAQJ","dcterms:isPartOf":[{"@rdf:resource":"https://www.dlib.si/details/urn:nbn:si:spr-ihg6vo21"},{"@xml:lang":"sl","#text":"Materiali in tehnologije"}],"dcterms:issued":"2014","dc:creator":["Đurović, Dijana","Janković - Častvan, Ivona","Krivokapić, Jasmina","Nikolić, Irena","Radmilović, Velimir","Radmilović, Vuk"],"dc:format":[{"@xml:lang":"sl","#text":"številka:1"},{"@xml:lang":"sl","#text":"letnik:48"},{"@xml:lang":"sl","#text":"str. 39-44"}],"dc:identifier":["COBISSID:1031082","ISSN:1580-2949","URN:URN:NBN:SI:doc-IMJ9DAQJ"],"dc:language":"en","dc:publisher":{"@xml:lang":"sl","#text":"Inštitut za kovinske materiale in tehnologije"},"dc:subject":[{"@xml:lang":"en","#text":"bauxite"},{"@xml:lang":"sl","#text":"boksit"},{"@xml:lang":"en","#text":"compressive strength"},{"@xml:lang":"sl","#text":"geopolimerizacija"},{"@xml:lang":"en","#text":"geopolymerization"},{"@xml:lang":"en","#text":"polymerization degree"},{"@xml:lang":"sl","#text":"stopnja polimerizacije"},{"@xml:lang":"sl","#text":"tlačna trdnost"},{"@rdf:resource":"http://www.wikidata.org/entity/Q186191"}],"dcterms:temporal":{"@rdf:resource":"2000-2024"},"dc:title":{"@xml:lang":"sl","#text":"Geopolymerization of low-grade bauxite| Geopolimerizacija revnega boksita|"},"dc:description":[{"@xml:lang":"sl","#text":"In terms of quality, bauxite ore can be classified as high- or low-grade ore. High-grade bauxite ores are used for alumina extraction using the Bayer process, while low-grade bauxite ores have a limited application. In this paper we investigate the possibility of evaluating low-grade bauxite ores with the geopolymerization process. The influence of the synthesis parameters, i.e., alkali and silicate dosages and alkali cations (Na+ and K+) on the compressive strength of bauxite-based geopolymers is evaluated. The results show that an increase in the alkali dosage has a beneficial effect on the strength of bauxite-based geopolymers, while the strengthening of geopolymers by increasing the silicate dosage is limited by the viscosity of the geopolymer paste. Moreover, Na-geopolymers reach higher values of the compressive strength than K-geopolymers"},{"@xml:lang":"sl","#text":"Glede na kvaliteto delimo boksitne rude na revne in bogate. Bogate se uporabljajo za pridobivanje glinice po Bayerjevem postopku, medtem ko ima revna boksitna ruda le omejeno uporabnost. V tem članku opisujemo preiskavo možnosti za oceno revne boksitne rude s postopkom geopolimerizacije. Ocenjeni so bili parametri sinteze, to je dodatek alkalij in silikatov ter alkalnih kationov (Na+ in K+) na tlačno trdnost geopolimera na osnovi boksita. Rezultati so pokazali, da povečanje dodatka alkalij ugodno vpliva na trdnost geopolimera na osnovi boksita, medtem ko je utrjevanje geopolimera z dodajanjem silikata omejeno z viskoznostjo geopolimerne paste. Poleg tega doseže Na-geopolimer večjo tlačno trdnost v primerjavi s K-geopolimerom"}],"edm:type":"TEXT","dc:type":[{"@xml:lang":"sl","#text":"znanstveno časopisje"},{"@xml:lang":"en","#text":"journals"},{"@rdf:resource":"http://www.wikidata.org/entity/Q361785"}]},"ore:Aggregation":{"@rdf:about":"http://www.dlib.si/?URN=URN:NBN:SI:DOC-IMJ9DAQJ","edm:aggregatedCHO":{"@rdf:resource":"URN:NBN:SI:DOC-IMJ9DAQJ"},"edm:isShownBy":{"@rdf:resource":"http://www.dlib.si/stream/URN:NBN:SI:DOC-IMJ9DAQJ/012a9726-986d-4bf3-bd80-7373b395d396/PDF"},"edm:rights":{"@rdf:resource":"http://rightsstatements.org/vocab/InC/1.0/"},"edm:provider":"Slovenian National E-content Aggregator","edm:intermediateProvider":{"@xml:lang":"en","#text":"National and University Library of Slovenia"},"edm:dataProvider":{"@xml:lang":"sl","#text":"Inštitut za kovinske materiale in tehnologije"},"edm:object":{"@rdf:resource":"http://www.dlib.si/streamdb/URN:NBN:SI:DOC-IMJ9DAQJ/maxi/edm"},"edm:isShownAt":{"@rdf:resource":"http://www.dlib.si/details/URN:NBN:SI:DOC-IMJ9DAQJ"}}}}