The Properties of Geo-polymer Concrete by Partial Replacement of Cement with GGBS & Fly ash

Abstract

The production of Portland cement contributes to significant environmental pollution, with around 7% of global carbon dioxide emissions attributed to this industry. To address this issue, the construction sector seeks eco-friendly alternatives to conventional concrete. This project focuses on geopolymer concrete, which utilizes Fly ash and ground granulated blast-furnace slag (GGBS) can be utilized as a partial substitute for cement. The study investigates the effects of incorporating different percentages of fly ash (5%, 10%, 15%, 20%, and 25% as cement replacement) and GGBS (10%, 15%, 20%, 25%, and 30% as sand replacement) in geopolymer concrete. Compressive strength tests are conducted on cube specimens (150mm x 150mm x 150mm) at various ages (7 days, 14 days, and 28 days).