Enhancing the properties of geopolymer concrete using nano-silica and microstructure assessment: a sustainable approach.

Nowadays low calcium fly ash-based geopolymer concrete can be replaced with cement-based concrete to avoid the adverse effect of manufacturing cement on the environment. Utilization of geopolymer concrete instead of traditional concrete using low calcium fly ash and nano silica reduces a significant amount of CO- emission towards the atmosphere. However, the performance of geopolymer concrete is less than that of Portland cement concrete.