The effect of alkali and Si/Al ratio on the development of mechanical properties of metakaolin-based geopolymers

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A Review of Recent Developments and Advances in Eco-Friendly Geopolymer Concrete (2020, background): “Mix design of GPC is a complex process because of the influence of numerous variables like alkaline content [67], curing time and temperature [68], water to solid ratio [69], pH and molarity of activators [70], aluminosilicate composition and type [71], aluminates to silicate ratio [72], and silicat”
Mechanical properties of sodium and potassium activated metakaolin-based geopolymers (2012, methodology): “[28] reported on the effect of types of alkali and Si/Al ratio on the mechanical properties of metakaolin-based GPs.”
Ambient Temperature Drying Shrinkage and Cracking in Metakaolin-Based Geopolymers (2012, background): “At the macrostructural level, there are some clear differences noted by replacing Na with K on compressive strength and Youngs modulus [35].”
Fracture properties of geopolymer paste and concrete (2011, background): “The effect of soluble silicate content on the compressive strength of geopolymers has been comprehensively investigated and well explained in the literature (Duxson et al., 2007).”
Mechanical activation of fly ash: Effect on reaction, structure and properties of resulting geopolymer (2011, background): “A large number of naturally occurring and industrially produced aluminosilicate solids are used for geopolymer synthesis [2–5].”