Characterisation of class F fly ash geopolymer pastes immersed in acid and alkaline solutions

By J. Temuujin, A. Minjigmaa, Melissa Lee, Chen-Tan Nigel, A. Riessen. 2011

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Resistance of lignite bottom ash geopolymer mortar to sulfate and sulfuric acid attack (2012, background): “Geopolymers exhibit many excellent properties such as high early strength, low creep, low shrinkage, and good resistance against acid and sulfate attack in addition to its environment friendliness [8–12].”
Clean production and properties of geopolymer concrete; A review (2020, background): “alkaline liquid medium for concentrated polymerization reaction (Temuujin et al., 2011; Yusuf et al., 2015).”
Sulfuric acid resistance of one-part alkali-activated mortars (2018, unknown): “…been repeatedly observed to exhibit high acid resistance [12 – 18], making them promising materials for applications in the aforementioned environments, though exceptions from this general trend, i.e. unsatisfactory or ambiguous results of acid resistance tests, have been reported too [12,19 – 21].”
Utilization of cement kiln dust (CKD) to enhance mine tailings-based geopolymer bricks (2013, methodology): “Deterioration of geopolymeric structure in alkaline solution is also observed by others [40,41].”