Effect of CO2 injection concentration during mixing on chloride migration and binding behaviors of cement paste

Key Points

• Chloride migration is significantly affected by the concentration of CO2 injection, altering binding behaviors.
• A 20% increase in chloride binding efficiency was observed at higher CO2 levels during mixing.
• Analysis of chemical interactions reveals how varying CO2 concentrations influence ion mobility in cement paste.
• Understanding these effects may lead to improved concrete durability and longevity under various environmental conditions.