Developing a smart, sustainable and multifunctional biological self-healing system for cementitious composite materials

This thesis illustrates the design, preparation, and characterization of a biological self-healing system for concrete. The biological healing agents are protected by nano-reinforced microcapsules from the harsh concrete environment. Controlled-release of nutrients supports the formation of healing minerals inside the concrete by a specific bacterial species. This smart system only initiates the self-healing process after the concrete has been damaged. The findings showed that the self-healing system successfully heals artificial concrete cracks and restores the integrity of the structure. This sustainable approach to construction relies on environmentally friendly materials and can meaningfully extend the service life of concrete structures.