The mechanical properties of fly ash-based geopolymer concrete with alkaline activators

By G. Ryu, Young Keun Lee, K. Koh, Y. Chung. 2013

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Clean production and properties of geopolymer concrete; A review (2020, methodology): “RHAbased ASTM Class C FA (0, 25, 50, 75, 100%), GGBS (0, 5, 10, 15%) 5–55 50% FA and 5% GGBS replacement level optimal (Ryu et al., 2013)”
Effects of nano-silica on the strength development of geopolymer cured at room temperature (2015, background): “It was observed that the amount of small pores proportionately increases with the higher molarity of the alkaline activator solution [25].”
Workability and mechanical properties of alkali-activated fly ash-slag concrete cured at ambient temperature (2018, background): “It can be noted that increasing the molarity of SH from 10 M (series A) to 12 M (series B) gradually increased the compressive strength of AAFS concrete, which can be explained by the reaction of the internal Si, Al and Ca components caused by the increased breakage of the T-O-T bonds (T: Si or Al) ”
Effect of sodium hydroxide concentration on chloride penetration and steel corrosion of fly ash-based geopolymer concrete under marine site (2014, background): “This result is consistent with several other researches [24,25] which indicated that the polycondensation reaction of ash-based geopolymer concrete with a higher concentration of NaOH produced lower permeability and higher strength, thus leads to lower chloride ingress than those with lower NaOH con”