Characterization of Geo Polymer Concrete with Ground Granulated Blast furnaces and Cenosphere as Binder and Glass Powder as Fine Aggregate

Cement serves as a binding and solidifying agent in buildings. The combustion of fossil fuels (5%–8%)during cement manufacture releases significant quantities of CO2, and the high demand for concrete hasgreatly increased the use of ordinary Portland cement (OPC). Geopolymer, an innovative advancement inthe field of concrete, completely replaces cement with pozzolanic elements like fly ash. Extremely alkalinesolutions then activate these materials, serving as a binding agent in the concrete mixture. In this era, it isimperative to use supplemental cementitious materials (SCMs) that produce less carbon dioxide as asubstitute for cement in order to minimize environmental impact and advance sustainable construction. Thestudy's goal is to find out if waste glass powder (WGP) and cenosphere (CS) can be used instead of fly ashand fine aggregate at a range of 0% to 20%, with a weight increase level of 5% for each. The study will alsouse a constant 12% GGBS. A number of tests assess the rheological, mechanical, and durabilitycharacteristics of CS-WGP-based geopolymer concrete, including workability/fluidity, water absorption,compressive strength, acid attack, flexural strength, and thermal conductivity. Researchers have also proventhat the application of CS enhances the mechanical, rheological, and durability qualities. The studydetermined that substituting 10% of CS and GGBS yielded significant improvements in all specifiedparameters. We conducted a scanning electron microscopy (SEM) examination on the cenosphere. Theresults show that adding cenosphere does not strengthen the mix. Hence, incorporating 10% of GGBS as acontinual replacement for the mass of fly ash effectively restores the strength diminished by adding thecenosphere. Overall, it was suggested that the decrease in strength caused by adding cenosphere can bemitigated using GGBS, resulting in a reliable level of strength.