Advancing Carbon Neutrality: Formulation and Microstructural Analysis of Iron Carbonate Binder with Normal and Saline Water

The Iron carbonate binder emerges as a promising eco-friendly alternative to traditional cement, addressing the substantial carbon footprint of concrete production. Composed of iron dust, a byproduct of the iron industry, alongside limestone, fly ash, and metakaolin, this innovative binder not only utilizes diverse waste materials but also boasts a carbon-negative profile. This experiment investigates the impact of optimizing oxalic acid dosage, curing regimes, and water types on mechanical properties, notably compressive strength, and microstructural characterization. Saline water-treated iron carbonate binder exhibits superior performance, achieving a maximum compressive strength at 0.18 water binder ratio compared to normal water treatment. By minimizing environmental impact and efficiently repurposing industrial waste, the Iron carbonate binder aligns with the imperative to reshape construction practices towards a more sustainable future, embodying a pivotal step in fostering eco-friendly and efficient construction industries globally.