Microstructure of Alkali-Activated Granulated Blast Furnace Slag-Based Geopolymer
The microstructure of alkali-activated granulated blast furnace slag-based geopolymer was studied by means of field emission scanning electron microscope (FESEM) coupled with energy dispersive X-ray analysis (EDXA). FESEM images showed that the geopolymer material has worm-like microstructure in the nanoscale with an average particle size of 20 nm. EDXA results demonstrated that the Na-based and Ca-based geopolymers were produced via the disintegration of amorphous phases and some minerals in GBFS and polycondensation reaction of oxygen-silicon and oxygen-aluminum tetrahedrons under alkaline condition.
Guangfan Li, Yong Huang and Chaohe Chen
Y. J. Zhang et al., "Microstructure of Alkali-Activated Granulated Blast Furnace Slag-Based Geopolymer", Advanced Materials Research, Vols. 250-253, pp. 528-531, 2011