Authors: Atorod Azizinamini (Florida International University) , Abbas Khodayari (Florida International University)
A significant portion of the existing roadway system in the United States was built over 50 years ago and is widely showing signs of increasing deterioration. Construction activities related to bridge replacement and rehabilitation are important contributors to traffic jams and reduced mobility and, most importantly, to safety hazards. Conventional construction practices have proven inadequate to address the magnitude of the problem now facing this nation. Highway system disruptions due to work zones must be considered when evaluating the need for rapid renewal procedures. ABC has the potential to reduce both the frequency and duration of work zone disruptions. ABC is a delivery solution method of building and repairing bridges with the capability to reduce the interruption to traffic and increase safety. UHPC provides a new horizon for addressing many actions that are needed to be taken to address the challenges facing the nation with respect to existing bridges. At ABC-UTC, researchers have developed many UHPC based solutions that can retrofit/upgrade existing bridges or utilized for construction of new bridges. These solutions includes systems where formwork is replaced by a UHPC shell that becomes permanent part of bridges, connections for connecting pre-fabricated bridge elements, 3D printing, automation, durability and fire resistance of bridge elements constructed using UHPC, advanced integral abutment systems, shotcrete and more. This presentation will provide overview of major UHPC based solutions.
Keywords: UHPC, accelerated bridge construction, 3D printing
How to Cite: Azizinamini, A. & Khodayari, A. (2023) “UHPC Based Solutions for Accelerated Bridge Construction”, International Interactive Symposium on Ultra-High Performance Concrete. 3(1). doi: https://doi.org/10.21838/uhpc.16738