caa a22 4500 463224280 CHVBK 20180405153222.0 cr unu---uuuuu 170326e20070501xx s 000 0 eng 10.1007/s10853-006-0530-9 doi (NATIONALLICENCE)springer-10.1007/s10853-006-0530-9 Dissolution properties of some fly ash fillers applying to geopolymeric materials in alkali solution [Elektronische Daten] [Akira Mikuni, Ryuichi Komatsu, Ko Ikeda] Abstract:: Dissolution properties of three kinds of fly ash including a Pressurized Fluidized Bed Combustion (PFBC) ash from a novel type of fluidized bed combustion boiler have been studied by leaching in different concentrations of caustic soda solution up to 15N at 25°C and 80°C, stirring for 1h with liquor/solid ratio=10. Liquors sampled by a centrifugal separator were chemically analyzed by ICP technique. A blast furnace slag was also studied for reference. Results showed that Ca2+ dissolved relatively large amount in genuine water, but no marked dissolution was detected with increasing NaOH concentrations of the leaching solution. No enhanced dissolution of Al3+ was detected for ordinary fly ashes collected from pulverized coal combustion boilers even with increasing concentrations of solution at 25°C, whereas enhanced dissolution of Al3+ was observed at 80°C, when 5N was reached and more. On the contrary, appreciable increasing was noted on the dissolution of Si4+ with increasing NaOH concentrations even at 25°C for the ordinary fly ashes and the Si4+ dissolution became enhanced at 80°C, specifically in 5N and more. Springer Science+Business Media, LLC, 2007 Mikuni Akira Yamaguchi Prefectural Industrial Technology Institute, 755-0151, Asutopia, Ube, Japan aut Komatsu Ryuichi Department of Advanced Materials Science and Engineering, Yamaguchi University, 755-8611, Ube, Japan aut Ikeda Ko Department of Advanced Materials Science and Engineering, Yamaguchi University, 755-8611, Ube, Japan aut Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/9(2007-05-01), 2953-2957 0022-2461 42:9<2953 2007 42 10853 https://doi.org/10.1007/s10853-006-0530-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-006-0530-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Mikuni Akira Yamaguchi Prefectural Industrial Technology Institute, 755-0151, Asutopia, Ube, Japan aut NATIONALLICENCE 700 1- Komatsu Ryuichi Department of Advanced Materials Science and Engineering, Yamaguchi University, 755-8611, Ube, Japan aut NATIONALLICENCE 700 1- Ikeda Ko Department of Advanced Materials Science and Engineering, Yamaguchi University, 755-8611, Ube, Japan aut NATIONALLICENCE 773 0- Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/9(2007-05-01), 2953-2957 0022-2461 42:9<2953 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer