caa a22 4500 463223977 CHVBK 20180405153221.0 cr unu---uuuuu 170326e20070501xx s 000 0 eng 10.1007/s10853-006-0529-2 doi (NATIONALLICENCE)springer-10.1007/s10853-006-0529-2 Geopolymerisation of low calcium ferronickel slags [Elektronische Daten] [K. Komnitsas, D. Zaharaki, V. Perdikatsis] The present experimental study investigates the feasibility of geopolymer synthesis from low Ca electric arc ferronickel slags. Additives used include kaolinite, sodium silicate, sodium hydroxide and water. The effect of the main factors considered (heating temperature, heating time and aging period) as well as of their interactions on the final compressive strength of the geopolymers produced was studied through a 23 factorial design. The experimental results and the variance analysis have shown that only aging period has a statistically very significant and positive effect on the final compressive strength while the effect of the other factors as well as of their interactions were either less significant or negligible. Identification of new phases formed in order to elucidate geopolymerisation mechanisms was carried out by XRD and FTIR. Sodalite, maghemite, thermonatrite, trona and calcite are the major phases identified. The structural integrity of the produced geopolymers was studied by subjecting them to accelerated freeze-thaw cycles. Finally, the durability of the produced geopolymers when immersed in various aquatic and acidic solutions was investigated. Springer Science+Business Media, LLC, 2006 Komnitsas K. Department of Mineral Resources Engineering, Technical University Crete, 73100, Chania, Greece aut Zaharaki D. Department of Mineral Resources Engineering, Technical University Crete, 73100, Chania, Greece aut Perdikatsis V. Department of Mineral Resources Engineering, Technical University Crete, 73100, Chania, Greece aut Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/9(2007-05-01), 3073-3082 0022-2461 42:9<3073 2007 42 10853 https://doi.org/10.1007/s10853-006-0529-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-006-0529-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Komnitsas K. Department of Mineral Resources Engineering, Technical University Crete, 73100, Chania, Greece aut NATIONALLICENCE 700 1- Zaharaki D. Department of Mineral Resources Engineering, Technical University Crete, 73100, Chania, Greece aut NATIONALLICENCE 700 1- Perdikatsis V. Department of Mineral Resources Engineering, Technical University Crete, 73100, Chania, Greece aut NATIONALLICENCE 773 0- Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/9(2007-05-01), 3073-3082 0022-2461 42:9<3073 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer