• I worked on high-performance concrete by partially replacing cement with metakaolin as per ASTM standards.
• At 28 and 56 days, the compressive strength was higher compared to normal concrete.
• It also improved durability by reducing permeability, chloride penetration, and sulfate attack.
• Workability slightly decreased, but I managed it using superplasticizers.
• Overall, the concrete showed better strength, durability, and long-term performance.