Porous Geopolymer Components by Additive Manufacturing

Reference	Presenter	Authors (Institution)	Abstract
17-020	Paolo Colombo	Colombo, P.(Università degli Studi di Padova); Scanferla, P.(Università degli Studi di Padova); Franchin, G.(Università degli Studi di Padova);	Metakaolin-based geopolymer components were fabricated by Additive Manufacturing. Both a direct AM technique (Direct Ink Writing) and an indirect AM technique (powder bed) were used. Printable inks were obtained by controlling the composition, rheology and additives in the formulation as well as taking advantage of the time during which the viscosity of the system was rather constant. High-porosity components were produced for potential use as water purification filters. The use of a liquid geopolymer as the binder in powder-bed AM was also explored, leading to components with improved mechanical properties with respect to using other inorganic binder systems.
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