Figure 4.
SEM images of hydration products: (a) ΔnCl− = 21.5 mol/kg, t = 10 min; (b) ΔnCl− = 21.5 mol/kg, t = 40 min; (c) ΔnCl− = 7.5 mol/kg, t = 10 min; (d) ΔnCl− = 7.5 mol/kg, t = 40 min.
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