Aqueous carbonation-induced self-healing of UHPFRC: Role of sulfur/magnesium-rich expansive agents in crack closure and mechanical restoration

Key Points

• Mechanical restoration is achieved through self-healing mechanisms involving crack closure.
• The use of sulfur and magnesium-rich expansive agents significantly enhances the self-healing process.
• Aqueous carbonation plays a crucial role in facilitating the healing of cracks.
• This study highlights the potential for improved durability in UHPFRC applications.