High-performance geopolymer concrete for repairing normal concrete: Interfacial bonding characteristics and microstructure evolution

Key Points

• Improved interfacial bonding characteristics lead to enhanced durability in concrete repairs, and overall performance is notable.
• Testing shows a significant increase in bonding strength of geopolymer compared to traditional repair materials—measured at 20% higher strength.
• Observational analysis of microstructure evolution highlights changes in particle arrangement and density during the curing process.
• Geopolymer concrete's potential for long-lasting repairs supports the need for further studies comparing its performance in real-world applications.