Experimental Study on Compressive Strength Prediction of Fly Ash-Based Geopolymer Concrete
摘要
Current environmental concerns arising from cement production highlight sustainable construction practices. To address this, emphasis on less use of building materials may be taken care of that negatively impact the environment. Cement manufacturing contributes to the emission of greenhouse gases, a significant factor in global warming. Consequently, researchers are actively exploring alternative materials to reduce and replace cement. Geopolymer concrete has emerged as a viable replacement for traditional cement-based concrete in the construction sector. Numerous research studies on geopolymer concrete suggest its potential to replace conventional concrete. Geopolymeric concrete presents an eco-friendly friendly concrete, using waste materials as a cementitious component. The mix design challenges its widespread adoption in construction. This gap is addressed by conducting experimental investigations to predict the CS of FA-based GPC depending on its constituents and compositions. Mixture design data from published articles spanning the years 2000 to 2020 were collected as a reference to predict the CS of GPC. The mixture design is performed with a concentration of 14 M sodium hydroxide solution. The results highlight the significant influence of chemical compositions, including fly ash, alkaline activators, AS/binder ratio, molarity and total aggregate mass, on the Cs of FA-based GPC. The study demonstrates acceptable accuracy in predicting compressive strength, indicating that these parameters play a key role in explaining variations between ideal mix designs observed in previous studies.