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Table 2 Mixing proportion of geopolymer specimens.

From: Effect of Silica Fume on the Volume Expansion of Metakaolin-Based Geopolymer Considering the Silicon-to-Aluminum Molar Ratio

Specimen Silica fume addition (%) Precursor Sodium silicate solution
   Metakaolin (wt%) \(SF^{a}\) (wt%) NaOH (wt%) \(SF^{b}\) (wt%) Water (wt%) \(Mol^{c}\)
S/A 1.0 0 51 0 17 0 32 13.2
  5 49 2 17 0 32 12.7
  10 47 5 16 0 32 12.3
  15 45 8 15 0 32 11.9
S/A 1.4 0 43 0 15 10 32 11.3
  5 42 2 14 10 32 11.0
  10 41 4 14 9 32 10.7
  15 40 6 13 9 32 10.3
S/A 1.8 0 38 0 13 17 32 10.0
  5 37 2 13 16 32 9.7
  10 36 4 12 16 32 9.4
  15 35 6 12 15 32 9.2
S/A 2.0 0 36 0 13 19 32 9.4
  5 35 2 12 19 32 9.2
  10 34 3 12 19 32 8.9
  15 33 5 12 18 32 8.7
  1. aSilica fume was added into geopolymer in powder form, bSilica fume was used to synthesize sodium silicate solution, cThe molarity of sodium hydroxide solution.