Table 1 Fluctuations of strength of fly ash based geopolymers in sodium and magnesium sulfate solutions, Bakharev (2005).
Immersed solutions | Activators | Fluctuations of strength |
|---|---|---|
Sodium sulfate | Sodium hydroxide | 4 % strength increase |
Sodium hydroxide and potassium hydroxide | 65 % strength reduction | |
Sodium silicate | 18 % strength reduction | |
Magnesium sulfate | Sodium hydroxide | 12 % strength increase |
Sodium hydroxide and potassium hydroxide | 35 % strength increase | |
Sodium silicate | 24 % strength reduction |