Fly Ash/Blast Furnace Slag-Based Geopolymer as a Potential Binder for Mine Backfilling: Effect of Binder Type and Activator Concentration

Figure 6

Microstructure of BM samples with the NaOH concentration of 16 M: (a, b) F100B0N8; (c, d) F50B50N8; (e, f) F0B100N8; (g, h) F50B50N16.

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