Bacteria for Self-Healing Concrete – Project Examples and Current Results
Evonik’s Sitren Selfheal 455 is an innovative powder formulation based on natural microbes, nutrients, and surface-active ingredients designed to enhance the longevity and sustainability of concrete structures.
As a self-healing agent, Sitren Selfheal 455 is incorporated during the manufacturing of ready-to-use and precast concrete elements. When cracks or pores occur, the system activates in the presence of moisture or water, enabling repeated healing cycles that restore structural integrity.
Possible applications include containment basins for hazardous material in aqueous solution, tunnels, bridges, offshore windmill foundations, and dams - critical infrastructures where durability and water resistance are essential. Demonstrator projects will showcase real-world performance data, highlighting measurable improvements in compressive strength, reduced water penetration, and enhanced freeze-thaw resistance. These benefits translate into significant cost and time savings for repair and maintenance, while extending the service life of concrete structures. This not only minimizes concrete waste but also contributes to lower CO₂ emissions, supporting more sustainable construction practices.
Sitren Selfheal 455 delivers smooth surface finishes, excellent workability, and a transformative approach to concrete durability - shaping the future of resilient infrastructure.
