A review of application of UHPFRC in bridges as an overlay

A quick increase in the traffic loads (repetitive) and aging deteriorates the bridge's life. To increase the life of the bridge, techniques like overlaying are developed & implemented. Concrete with higher compressive strength and appreciable interfacial bond, which can enhance the life of the deck slab, is used as an overlaying material. In this process, researchers developed a ground-breaking next-generation concrete named “Ultra-High-Performance Fiber Reinforced Concrete (UHPFRC).” UHPFRC gives a minimum 120 MPa compressive strength and 7 Mpa tensile strength, respectively, which is much higher than conventional concrete. The novelty of this paper is to highlight the constituents and exceptional properties of UHPFRC, like compressive strength, fatigue life, and interfacial bond with the already existing substrate, making out suitable material for overlaying. Further, the use of UHPFRC as an overlay in various structural elements has been studied. The applications of UHPFRC around the world for rehabilitation purposes are also highlighted by discussing various case studies that should be added.