Materials and methods Materials In this study two alkaline silicate

The viscosity increases with the decrease of the NaOH quantity for Na-materials. On the other hand, the geopolymer binders based on potassium silicate presents a liquid aspect which and becomes sediment with the decrease of the KOH quantity. This variation of the viscosity between the two types of geopolymer binders can be explained by the variation of the cation nature, which influences the binding energy and induces different behaviors in the network?s matrix [29] and [37].