Effectiveness of Nano-Titanium Dioxide on Abrasion Resistance, Fatigue Response, and Intrinsic Crack Repair Mechanisms in Cementitious Composites

This review examines the impacts of nano titanium dioxide (TiO2) on cementitious composites, particularly focusing on abrasion resistance, self-healing, and fatigue behavior. Results show that nano TiO2 significantly enhances abrasion resistance (up to 62.7% reduction in mass loss), improves fatigue life (up to 475.38% increase), and promotes self-healing through calcium carbonate crystal formation. These improvements stem from the ability of TiO2 to accelerate cement hydration and create a more compact microstructure. The results high-light how nano TiO2 may be used as an addition in transportation engineering to improve the sustainability and durability of concrete.