caa a22 4500 463224124 CHVBK 20180405153221.0 cr unu---uuuuu 170326e20070501xx s 000 0 eng 10.1007/s10853-006-0532-7 doi (NATIONALLICENCE)springer-10.1007/s10853-006-0532-7 The influence of calcium content on the structure and thermal performance of fly ash based geopolymers [Elektronische Daten] [K. Dombrowski, A. Buchwald, M. Weil] The influence of calcium and its content on the structure formation, hardening, and performance of fly ash based geopolymeric binder was the objective of our investigation. Calcium hydroxide was added to fly ash in different amounts. Since it is known that the formed structure determines certain properties of the material, the coherence between different types and various ratios of the reaction products on thermal properties such as strength after thermal treatment up to 1,100°C, thermal resistance under load, creep in compression, and axial dilation were investigated. The results were compared to the type and composition of the reaction product, which was detected, for example, by 29Si NMR spectroscopy and X-ray diffraction. Along with calcium containing zeolitic phases, the calcium built C-S-H-phases using the silicon from the fly ash, both of which crystallize or convert into new phases at elevated temperatures. Springer Science+Business Media, LLC, 2006 Dombrowski K. Institute of Ceramic, Glass and Construction Materials, Technical University Bergakademie Freiberg, Freiberg, Germany aut Buchwald A. Bauhaus-University Weimar, Coudraystr. 13C, 99421, Weimar, Germany aut Weil M. Department of Technology-Induced Material Flow (ITC-ZTS), Forschungszentrum Karlsruhe, Karlsruhe, Germany aut Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/9(2007-05-01), 3033-3043 0022-2461 42:9<3033 2007 42 10853 https://doi.org/10.1007/s10853-006-0532-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-006-0532-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Dombrowski K. Institute of Ceramic, Glass and Construction Materials, Technical University Bergakademie Freiberg, Freiberg, Germany aut NATIONALLICENCE 700 1- Buchwald A. Bauhaus-University Weimar, Coudraystr. 13C, 99421, Weimar, Germany aut NATIONALLICENCE 700 1- Weil M. Department of Technology-Induced Material Flow (ITC-ZTS), Forschungszentrum Karlsruhe, Karlsruhe, Germany aut NATIONALLICENCE 773 0- Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/9(2007-05-01), 3033-3043 0022-2461 42:9<3033 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer