Design and properties of fly ash, ground granulated blast furnace slag, silica fume and metakaolin geopolymeric based masonry blocks

TLDR: In this article, a phenomenological model was proposed to arrive at the combinations of the ingredients to produce geopolymer blocks to meet the strength development desired, and the validity of phenomenological models was examined with an independent set of experimental data.

Abstract: This chapter illustrates the reaction mechanism, the choice of materials used in making geopolymers and proportioning in brief. Later, the methods to be adopted to prepare mortar samples, determination of the optimum dry density, casting of mortar specimens and testing the same are illustrated. The development of compressive strength with various parameters is analyzed using the experimental data generated. This was done to formulate a phenomenological model to arrive at the combinations of the ingredients to produce geopolymer blocks to meet the strength development desired. The validity of phenomenological models was examined with an independent set of experimental data. It was found that the experimental values of compressive strength were in line with the predicted values.