This study explores the effects of CO2 curing on M20 grade concrete, focusing on the influence of various environmental parameters such as CO2 concentration, relative humidity (RH), temperature, and curing duration. Concrete specimens were cast and subjected to controlled CO2 curing within a carbonation chamber, with mechanical properties evaluated before and after carbonation. The compressive strength was measured to assess the impact of CO2 curing on the structural integrity of the concrete. Additionally, the CO2 uptake was quantified using titration method to determine the efficiency of the carbonation process. The results demonstrated a significant increase in CO2 uptake with prolonged curing duration, highlighting the potential for enhanced carbonation in improving the sustainability and durability of concrete. This study provides valuable insights into optimizing CO2 curing parameters to achieve desired mechanical properties and maximize CO2 sequestration in concrete.