Performance on Fly Ash Based Geopolymer Concrete with 8, 10 & 12 Molar Naoh Activator Using M40 Grade of Concrete

Abstract

Abstract: Ordinary Worldwide, Portland cement is a vital building component. A source of carbon dioxide emissions alongside deforestation and the use of fossil fuels is the cement making business. The atmosphere is polluted by greenhouse gases like CO2, which contribute to global warming. CO2 makes up roughly 65% of the greenhouse gases that cause global warming. Around 7% of the planet's total greenhouse gas emissions come from the cement industry. Alternative binders for the manufacturing of concrete are required to overcome the environmental impacts associated with Portland cement. In this work, a geopolymer based on fly ash from Vijayawada with a low calcium content (Class F) was utilised. A thermal power plant was used to create geopolymer concrete. Flyash activation employed an alkaline solution made of sodium silicate and sodium hydroxide solutions. The ratio of alkaline solution to fly ash was adjusted to 0.45. The sodium hydroxide solution's concentration was kept at 8M, 10M, and 12M. (Molars). As ambient curing, different curing conditions for geopolymer concrete were used. At different ages, including 7 and 28 days, the geopolymer concrete's compressive strength and split tensile strength were evaluated. According to the test results, the strength of geopolymer concrete increases along with the alkaline solution to fly ash ratio.