Evaluation of carbon absorption capacity and fracture resistance of FRCC in mineralization curing
[Objective]Investigating the application of CO2 mineralization curing technology in fiber reinforced cement-based composites(FRCC),we aim to explore impacts of various mineralization curing durations and specimen thicknesses on the carbon absorption capacity and mechanical properties of FRCC.[Methods]The carbon absorption capacity of FRCC specimens was evaluated by using the improved mass gain method,and the development trend of mechanical properties of FRCC specimens was analyzed by performing bending tests.[Results]Results show that CO2 mineralization curing significantly enhances the early strength of FRCC and effectively promotes carbon absorption without negatively impacting the following later strength.The carbon sequestration capacity increases with the duration of mineralization curing.However,in consideration of the impact on strength comprehensively,the curing regimen is optimized as 4 hours of mineralization curing after 18 hours of specimen formation.[Conclusion]The CO2 mineralization curing technology provides significant advantages in reducing carbon emissions and improving the early strength of FRCC.This technology demonstrates its substantial potential for widespread application.
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