Performance Evaluation of Eco-Friendly Concrete Using Granite Powder And Waste Glass As Partial Replacements

The construction industry has developed at high rates and the resources consumed rapidly are natural river sand and cement, which cause a severe degradation of nature and also lead to high carbon dioxide emissions. At the same time, the amounts of industrial waste products including granite powder, waste glass, fly ash, and marble powder produced by stone-processing and manufacturing industry pose severe disposal and health problems. The research examines the potential of using granite powder as a partial substitute of natural fine aggregate and glass powder as an auxiliary cementitious material to come up with sustainable and strong concrete. Experimental studies were conducted by substituting cement with up to 25% of natural sand with glass powder and then substituting natural sand with granite powder up to 50% and a combination of the two. Moreover, fly ash (20 percent) was added to enhance optimum mixes and marble powder (10 percent) was incorporated as a filler material. Slump tests were used to evaluate fresh property and the hardened property that were assessed included compressive strength, flexural strength, splitting tensile strength, density, abrasion resistance and modulus of elasticity. The properties of durability such as water absorption, water penetration, acid attack, sulphate attack and quick penetration through chloride were also evaluated. EMU Microstructural characterization was done by SEM and XRD to learn the behavior of the internal matrix and hydration. Findings show that the ideal ratios of granite powder and the glass powder are influential in improving the mechanical performance and durability as a result of better particle packing and pozzolanic reactions as well as reducing the reliance on traditional materials. The research shows that mixed use of these waste products is an effective, environmentally friendly and sustainable option towards concrete production.