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PROPERTIES OF PHOSPHORUS-CONTAINING GEOPOLYMER MATRIX AND FIBER-REINFORCED COMPOSITE
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SYSNO ASEP 0372237 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title PROPERTIES OF PHOSPHORUS-CONTAINING GEOPOLYMER MATRIX AND FIBER-REINFORCED COMPOSITE Author(s) Bortnovsky, O. (CZ)
Bezucha, P. (CZ)
Dědeček, Jiří (UFCH-W) RID, ORCID
Sobalík, Zdeněk (UFCH-W) RID
Vodičková, V. (CZ)
Kroisová, D. (CZ)
Roubíček, P. (CZ)
Urbanová, Martina (UFCH-W)Source Title MECHANICAL PROPERTIES AND PERFORMANCE OF ENGINEERING CERAMICS AND COMPOSITES IV, Vol. 30 - Ceramic Engineering and Science Proceedings. - Westerville : Amer. Ceram. Soc, 2010 - ISBN 978-0-470-45752-8 Pages s. 283-299 Number of pages 17 s. Action International Conference on Advanced Ceramics and Composites /33./ Event date 18.01.2009-23.01.2009 VEvent location Dayota Beach Country US - United States Event type WRD Language eng - English Country US - United States Keywords geopolymer matrix ; XRD ; FTIR ATR Subject RIV CF - Physical ; Theoretical Chemistry R&D Projects FT-TA4/068 GA MPO - Ministry of Industry and Trade (MPO) CEZ AV0Z40400503 - UFCH-W (2005-2011) UT WOS 000281694100027 Annotation 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, (27)Al, (29)Si and (31)P 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. Workplace J. Heyrovsky Institute of Physical Chemistry Contact Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Year of Publishing 2012
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