AN EXPERIMENTAL ANALYSIS OF FLY ASH BASED GEOPOLYMER CONCRETE

The primary objective of this experimental study is to explore the potential of geopolymer concrete as a substitute for conventional concrete in infilled stub columns and hollow stub columns. A crucial factor under investigation is the varying thickness of a stainless steel tube. The experimental procedure involves applying incremental loads to the columns to observe their mechanical response and behavior. Furthermore, the analytical integration of the properties and attributes of fly ash and geopolymer is undertaken to deepen the comprehension of the experimental findings.. The behaviour of infilled stub column and hollow stub column is studied experimentally by applying gradual load along with analytically integrating the engineering behaviour of fly ash and geopolymer synthesized binder at different mix proportions and at dissimilar curing environments these properties are compared with conventional concrete. The investigation concerns the use of the optimum mix proportion of two locally available pozzolanic waste materials, namely, fly ash and geopolymer, In addition, another local waste material, manufactured sand (M-sand), was used as a replacement for conventional sand in the development of green geopolymer concrete, Twenty-four mortar mixtures were designed with varying binder contents and alkaline activators. The oven dry curing was also kept consistent for all the mix proportions at a temperature of 65∘ C for 24 hours. The highest 28-day compressive strength was obtained, The fly ash replacement beyond 35% also reduced the compressive strength