Influence of aluminum hydrothermal reaction on hydration mechanism and mechanical properties of alkali-activated autoclaved aerated concrete (ASAAC) produced from FA and BFS

Key Points

• Aluminum hydrothermal reaction significantly improves mechanical properties of alkali-activated autoclaved aerated concrete.
• Mechanical strength increased by 25%, with compressive strength reaching 40 MPa after 28 days.
• Hydration mechanism analysis indicates enhanced binding from reactions between aluminum and constituents in concrete.
• The findings suggest that optimizing aluminum content may further enhance performance in construction applications.