Performance evaluation and material analysis of modified eco-friendlier Engineered Cementitious Composites tailored for repairing/retrofitting concrete structures

• Applicant: Dr. Thamara Tofeti Lima
• Subject Area: Construction Material Sciences, Chemistry, Building Physics
• Term: since 2026
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 574018170

This project proposes the development of Modified Engineered Cementitious Composites (MECC), optimized for structural repair applications. The objective is to identify and validate innovative mix designs that retain key advantages, namely high ductility, sufficient tensile strength, crack control, workability, and high durability in the cracked state in terms of chloride permeability, while significantly reducing environmental impact and cost. The research will employ a multi-scale methodology linking composite behavior with material micromechanics. This integrative approach goes beyond conventional studies by defining performance through a global index that balances mechanical properties, crack management, and carbon emissions. Key innovations include the incorporation of environmentally friendly binders in varying proportions and the use of cost-effective fibers of different types and sizes. Rather than prescribing a single material solution, the goal is to identify combinations that lead to overall satisfactory behavior suitable for field deployment.

• DFG Programme: Research Grants
• International Connection: Brazil
• Cooperation Partner: Professorin Dr. Eliane Betânia Carvalho Costa