This study followed the first 20 h of flyash geopolymerization at 70 °C using time resolved Wide Angle X-ray Scattering (WAXS). The extent of dissolution of the amorphous phase of the flyash was determined to range from 29% to 54% for the different formulations trialed. The dissolution rate of the flyash significantly reduced after the first 5 h for all samples. During the formation stage of th...

The main objective of this research was to investigate the influence curing temperature on phase transformation, mechanical properties, and microstructure as-cured sintered kaolin-ground granulated blast furnace slag (GGBS) geopolymer. varied, giving four different conditions; namely: Room temperature, 40, 60, 80 °C. kaolin-GGBS geopolymer prepared, with a mixture NaOH (8 M) sodium silicate. sa...

Red clay contains solid aluminosilicate has been shown to be reactive in the presence of an alkaline activator. The addition coal fly ash and lime improvements their mechanical physical properties geopolymer products. FTIR analysis SEM images product have formation gel geopolymeric product. maximum compressive strength products GP-RFL was achieved 15.92 N/mm2 having water absorption 10.47 % bul...

In order to study the effect of R2O/Al2O3 (where R=Na or K), SiO2/Al2O3, Na2O/K2O and H2O/R2O molar ratios on the compressive strength (CS) of Metakaolin base geopolymers, more than forty data were gathered from literature. To increase the number of data, some experiments were also designed. The resulted data were utilized to train and test the three layer artificial neural network (ANN). Bayes...