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Utilisation of Sand from KaolinWashing for the Manufacture of Alkali-activated Artificial Sandstone
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SYSNO ASEP 0475839 Document Type A - Abstract R&D Document Type O - Ostatní Title Utilisation of Sand from KaolinWashing for the Manufacture of Alkali-activated Artificial Sandstone Author(s) Vavro, Martin (UGN-S) RID, ORCID
Vavro, Leona (UGN-S) RID
Mec, P. (CZ)
Souček, Kamil (UGN-S) RID, ORCID
Pticen, F. (CZ)
Reiterman, P. (CZ)Number of authors 6 Source Title EGU General Assembly, EGU2017, Conference Proceedings, 19. - Mnichov : EGU – European Geosciences Union GmbH, 2017
S. 10626-10626Number of pages 1 s. Publication form Online - E Action EGU General Assembly - EGU2017 Event date 23.04.2017 - 28.04.2017 VEvent location Vídeň Country AT - Austria Event type WRD Language eng - English Country DE - Germany Keywords natural stones ; sandstones ; artificial materials Subject RIV DH - Mining, incl. Coal Mining OECD category Mining and mineral processing Institutional support UGN-S - RVO:68145535 Annotation Sandstones represent a traditional natural stones which are widely used in Czech architecture and sculpture over a long time. Thanks to their relatively easy workability, sandstones provide a wide range of stone products and also represent a popular material for architectural and sculptural purposes. In the field of restoration of artworks, they are therefore often used for manufacturing stone statue copies originally made from the same or similar type of stone. Despite a relatively common and varied occurrence of natural sandstones, the method of the artificial stone facsimiles creation in the form of various cast elements is also often applied in restoration practice. The history of application of artificial stones in civil engineering and architecture goes back to the ancient times, i.e. to Roman antiquity and possibly up to the time of ancient Egypt. The lack of appropriate natural rock, suitable in the view of colour, grain size or texture is the main reason of manufacturing copies based on synthetic mixtures. The other reason is high financial costs to create a sculpture copy from natural materials. Mixtures made from white and/or grey cements, sands, carefully selected crushed stone or well graded natural gravels, and mineral coloring pigments or mixtures with acrylate, polyester, and epoxy resins binder are the most frequently used artificial materials for cast stone manufacturing. This paper aims to bring information about composition and properties of artificial sandstones made from alkali-activated binder mixtures based on metakaolin and granulated blast furnace slag. The filler of this artificial stone is represented by fine-grained sand generated during kaolin wet processing. Used sand is mainly formed by quartz, feldspars, micas (muscovite > biotite), residual kaolin, and to a lesser extent also by Fe oxyhydroxides ('limonite'), titanium dioxide mineral (probably anatase), and carbonate mineral unidentified in detail. Workplace Institute of Geonics Contact Lucie Gurková, lucie.gurkova@ugn.cas.cz, Tel.: 596 979 354 Year of Publishing 2018 Electronic address http://meetingorganizer.copernicus.org/EGU2017/EGU2017-10626.pdf
Number of the records: 1