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Figure 1. 

Grading curve of silty sand.

Figure 2. 

Samples of CaO and Na₂SiO₃.

Figure 3. 

Experimental apparatus. (a) Universal testing machine, (b) JSM-6510 SEM.

Figure 4. 

Systematic technique route for this study.

Figure 5. 

Variation of unconfined compressive strength of geopolymer stabilized silty sands at different ratios of Na₂SiO₃ to CaO in the alkaline activator.

Figure 6. 

Variation of unconfined compressive strength of geopolymer stabilized silty sands at different ratios of slag to alkaline activator.

Figure 7. 

Variation of unconfined compressive strength of silty sands stabilized with different dosages of steel slag-based geopolymer binder.

Figure 8. 

Microstructural and chemical composition evolution of geopolymer stabilized silty sands at different curing ages.