caa a22 4500 463223993 CHVBK 20180405153221.0 cr unu---uuuuu 170326e20070501xx s 000 0 eng 10.1007/s10853-006-0522-9 doi (NATIONALLICENCE)springer-10.1007/s10853-006-0522-9 Thermo-mechanical and microstructural characterisation of sodium-poly(sialate-siloxo) (Na-PSS) geopolymers [Elektronische Daten] [Subaer,, Arie van Riessen] The thermo-mechanical and microstructural character of sodium-poly(sialate-siloxo) (Na-PSS) geopolymers synthesised from dehydroxylated kaolinite (metakaolinite) have been investigated. Thermal analysis by means of TG-DTA showed a single endothermic peak at 135-140°C due to dehydration (water evolution) from the geopolymer framework. Thermal expansion measurements show that geopolymer suffers 2% shrinkage below 250°C and is then dimensionally stable up to 800°C. The inclusion of aggregate (α-quartz or granite) was found to reduce the shrinkage by 1% although the presence of the quartz limits the working temperature range of the composite due a to disruptive phase change. Thermal conductivity and compressive strength of Na-PSS geopolymers varied with change in chemical composition of the geopolymer as well as the amount and type of aggregate. Investigation of the microstructure by electron microscopy showed that the ratio of the starting materials influences the homogeneity of the geopolymer microstructure, which in turn leads to differences in thermal conductivity and compressive strength. Springer Science+Business Media, LLC, 2006 Subaer, Centre for Materials Research, Department of Imaging & Applied Physics, Curtin University of Technology, PO Box U 1987, 6845, Perth, WA, Australia aut van Riessen Arie Centre for Materials Research, Department of Imaging & Applied Physics, Curtin University of Technology, PO Box U 1987, 6845, Perth, WA, Australia aut Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/9(2007-05-01), 3117-3123 0022-2461 42:9<3117 2007 42 10853 https://doi.org/10.1007/s10853-006-0522-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-006-0522-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Subaer Centre for Materials Research, Department of Imaging & Applied Physics, Curtin University of Technology, PO Box U 1987, 6845, Perth, WA, Australia aut NATIONALLICENCE 700 1- van Riessen Arie Centre for Materials Research, Department of Imaging & Applied Physics, Curtin University of Technology, PO Box U 1987, 6845, Perth, WA, Australia aut NATIONALLICENCE 773 0- Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/9(2007-05-01), 3117-3123 0022-2461 42:9<3117 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer