Microstructure of Alkali-Activated Granulated Blast Furnace Slag-Based Geopolymer

Yao Jun Zhang; Hai Hong Li; Yong Lin Zhao; Ya Chao Wang; De Long Xu

doi:10.4028/www.scientific.net/AMR.250-253.528

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 250-253Microstructure of Alkali-Activated Granulated...

Microstructure of Alkali-Activated Granulated Blast Furnace Slag-Based Geopolymer

Abstract:

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.