Strength and Microscopic Characteristics of Slag-Based Geopolymer-Solidified Sludge after Dry–Wet Cycling with Chloride Salt Solutions

Figure 10

SEM image of solidified sludge before and after dry–wet cycling. (a) 28-day NO-solidified sludge. (b) 28-day NO-solidified sludge after 30 dry–wet cycles in distilled water. (c) 28-day NO-solidified sludge after 30 dry–wet cycles in 10% NaCl solution. (d) 28-day NS-solidified sludge. (e) 28-day NS-solidified sludge after 30 dry–wet cycles in distilled water. (f) 28-day NS-solidified sludge after 30 dry–wet cycles in 10% NaCl solution. (g) 28-day CS-solidified sludge. (h) 28-day CS-solidified sludge after 30 dry–wet cycles in distilled water. (i) 28-day CS-solidified sludge after 30 dry–wet cycles in 10% NaCl solution.

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