Self-cleaning and self-healing concrete for the marine environment

This thesis explores advancements in self-cleaning and self-healing concrete technologies, focusing on challenging environments like marine settings. It enhances existing photocatalytic self-cleaning methods by incorporating a novel Na-g-C₃N₃ catalyst, improving pollutant degradation. A new photocatalytic self-healing approach is introduced, using sunlight-activated capsules for concrete crack repair, achieving a 52% healing efficiency. Bacterial technology is applied to geopolymer concrete with a higher calcium content, boosting healing performance. Lastly, fibers in engineered geopolymer composites (EGC) are studied for self-healing, revealing the influence of mix designs and healing environments on performance, including tensile property recovery.