Production of refractory chamotte particle-reinforced geopolymer composite

3rd International Conference on Competitive Materials and Technology Processes

Kováík, T.^1 ; Kullová, L.^1 ; Rieger, D.^1

New Technologies - Research Centre, University of West Bohemia, Plze, Czech Republic^1

关键词: Aggregate gradations;    Alkaline activation;    Chemical compositions;    Geopolymer composites;    Granular composites;    Particle reinforced;    Production of refractories;    Rheological measurements;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/123/1/012041/pdf
DOI  :  10.1088/1757-899X/123/1/012041

来源: IOP

【 摘 要 】

Geopolymer resins are obtained by alkaline activation of aluminosilicate sources where raw calcined clays are one of the suitable potentialities. Besides the fact that chemical composition has an essential effect on final properties of the geopolymer binder, the type of filler strongly affected resulting properties of such granular composite. However, very few comparative studies have been done on detail description of composite systems: binder - granular filler, in relation to aggregate gradation design and rheology properties of the mixture. The aim of this work is to develop and describe granular composite concerning workability of the mixture and kinetics of geopolymerization/polycondensation through flow behaviour. The rheological measurements indicated that initial viscosities of the mixtures and their evolution are different for various proportions of the filler. Moreover, it was demonstrated that increase in complex viscosity responds to the creation of chemical bonds and the formation of structural network. Finally, a correlation of the mechanism of geopolymer formation was carried out by differential scanning calorimetry (DSC).