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  • The paper covers results on the study of microstructural changes of alkali activated granulated blast furnace slag exposed to high temperatures. Paste prepared from slag activated with solid sodium silicate glass was subjected to temperatures in the range of 200–1200 C for the period of 1 h. The microstructural changes caused by the heat were investigated by means of SEM, HT-XRD analysis and FTIR and MAS NMR spectroscopy. Based on the latter two methods, only partial dehydration and decomposition of C-A-S-H phase can be observed up to 600 C. The principle changes in microstucture of alkali activated slag occur between 600 and 800 C, when the dehydration of C-A-S-H phase is complete and new phases start to crystallize, among which akermanite is dominant. Such a significant phase transformation is reflected in the morphology, pore distribution, and mechanical properties of the AAS paste.
  • The paper covers results on the study of microstructural changes of alkali activated granulated blast furnace slag exposed to high temperatures. Paste prepared from slag activated with solid sodium silicate glass was subjected to temperatures in the range of 200–1200 C for the period of 1 h. The microstructural changes caused by the heat were investigated by means of SEM, HT-XRD analysis and FTIR and MAS NMR spectroscopy. Based on the latter two methods, only partial dehydration and decomposition of C-A-S-H phase can be observed up to 600 C. The principle changes in microstucture of alkali activated slag occur between 600 and 800 C, when the dehydration of C-A-S-H phase is complete and new phases start to crystallize, among which akermanite is dominant. Such a significant phase transformation is reflected in the morphology, pore distribution, and mechanical properties of the AAS paste. (en)
Title
  • Characterization of alkali activated slag paste after exposure to high temperatures
  • Characterization of alkali activated slag paste after exposure to high temperatures (en)
skos:prefLabel
  • Characterization of alkali activated slag paste after exposure to high temperatures
  • Characterization of alkali activated slag paste after exposure to high temperatures (en)
skos:notation
  • RIV/00216305:26110/13:PU104375!RIV14-MSM-26110___
http://linked.open...avai/predkladatel
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  • P(ED2.1.00/03.0097)
http://linked.open...iv/cisloPeriodika
  • 1
http://linked.open...vai/riv/dodaniDat
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  • 65054
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  • RIV/00216305:26110/13:PU104375
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  • slag, alkali activation, water glass, thermal treatment, microstructure (en)
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  • GB - Spojené království Velké Británie a Severního Irska
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  • [75F15A20FACD]
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  • Construction and building materials
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  • 47
http://linked.open...iv/tvurceVysledku
  • Bayer, Patrik
  • Rovnaník, Pavel
  • Rovnaníková, Pavla
issn
  • 0950-0618
number of pages
http://bibframe.org/vocab/doi
  • 10.1016/j.conbuildmat.2013.06.070
http://localhost/t...ganizacniJednotka
  • 26110
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