Počet záznamů: 1

PROPERTIES OF PHOSPHORUS-CONTAINING GEOPOLYMER MATRIX AND FIBER-REINFORCED COMPOSITE

  1. 1.
    0357806 - UFCH-W 2011 RIV US eng C - Konferenční příspěvek (zahraniční konf.)
    Bortnovsky, O. - Bezucha, P. - Dědeček, Jiří - Sobalík, Zdeněk - Vodičková, V. - Kroisová, D. - Roubíček, P. - Urbanová, Martina
    PROPERTIES OF PHOSPHORUS-CONTAINING GEOPOLYMER MATRIX AND FIBER-REINFORCED COMPOSITE.
    PROPERTIES OF PHOSPHORUS-CONTAINING GEOPOLYMER MATRIX AND FIBER-REINFORCED COMPOSITE. Westerville: American Ceramic Soc, 2009 - (Singh, D.; Kriven, W.), s. 283-299. Ceramic Engineering and Science Proceedings, Vol. 30. ISBN 978-0-470-45752-8. ISSN 0196-6219.
    [International Conference on Advanced Ceramics and Composites /33./. Daytona Beach (US), 18.01.2009-23.01.2009]
    Výzkumný záměr: CEZ:AV0Z40400503; CEZ:AV0Z40500505
    Klíčová slova: material science * ceramics
    Kód oboru RIV: CF - Fyzikální chemie a teoretická chemie

    In this work properties of geopolymer matrices based on silica fumed prepared with different alumina sources and phosphoric acid were discussed. To evaluate the pot-life of geopolymer resin at room temperature, the viscosity of geopolymer resins was coherently measured. Matrices were analyzed by means of XRD, FTIR ATR, SEM-EDS, Al-27, Si-29 and P-31 MAS NMR. Thermodimensional stability of fiber-reinforced composites was measured by dilatometry. Water resistance was tested in boiling water; chemical composition and NMR spectra of treated geopolymer matrices were analyzed. The nature of the alumina source influenced the mechanical and thermomechanical properties of the matrix. Although the phosphorus added enhanced the dimensional stability of geopolymer matrix/composites at high temperature, more than 50% of phosphorus was soluble and washed out of the matrix during boiling in water. The rest of phosphorus was probably bound to geopolymer or adhered to silica fumed particles.
    Trvalý link: http://hdl.handle.net/11104/0196000