Cement production is one of the main industrial sources of carbon emissions, while fly ash is a byproduct of coal-fired power plants, occupying land and polluting the environment.
FGC utilizes fly ash to form geopolymer cementitious materials through alkali activation, which can significantly reduce the amount of ordinary Portland cement used and thus lower carbon emissions.
This is of great significance for the resource utilization of industrial solid waste.
However, traditional FGC requires high-temperature steam curing to achieve optimal mechanical properties, and energy consumption and carbon emissions offset some environmental benefits, which limits its engineering promotion and application.
The addition of a small amount of OPC can achieve the solidification and hardening of FGC at room temperature, which is a key technical route to solve this contradiction.
However, its impact on the mechanical properties and microstructure evolution of FGC still needs to be systematically studied.
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