Ultra-high-performance concrete (UHPC), as a typical representative of new building materials, demonstrates unique advantages in the field of civil engineering with its ultra-high strength, high toughness, and excellent durability. This paper systematically combs the material properties and preparation processes of UHPC, deeply analyzes its application status in prefabricated buildings, bridge engineering, tunnel reinforcement, and other fields. Combined with practical cases such as the south extension project of Ningbo Airport Road and the reinforcement of expressway bridges, this paper discusses the technical paths for UHPC performance optimization, including the regulation of steel fiber content, the improvement of thermal curing systems, and composite interface treatment. The study shows that UHPC can significantly improve the bearing capacity and durability of components through material composition optimization and structural design innovation, but it still faces challenges such as cost control, specification adaptation, and construction process standardization. Future research should focus on green preparation technologies, intelligent applications, and multi-functional integration to promote the wide application of UHPC in complex engineering environments.
Wang et al. (Fri,) studied this question.