Prestressing Concrete with CFRP Composites for Sustainability and Corrosion-Free Applications

Abstract

Abstract. Advancement in material science has enabled the engineers to enhance the behavior of concrete structures. The conventional approach is to use steel for prestressed bridge girders. Despite having good ductility and strength, beams prestressed with steel are susceptible to corrosion when subjected to environmental exposure. The corrosio the prestressed member and result in catastrophic failures. In the last materials such as Aramid Fiber Reinforced Polymer (AFRP), Glass Fiber Reinforced Carbon Fiber Reinforced Polymer problem. Among these materials, CFRP stands out as a primary prestressing reinforcement, which has the potential to replace steel and provid CFRP has not frequently been used lack of advancement of this promising technology in the design specifications. Apart from a limited number of guides, manuals, and commentaries, there is currently no standard or comprehensive design guideline available to bridge engineers in the U.S. for the design of concret structures prestressed with CFRP systems. The main goal is to develop design guideline format for concrete bridge girders with prestressing CFRP materials. The guidelines are intended to address limitation in current AASHTO girders with steel strands. To accomplish this goal long-term behavior of prestressed concrete bridge girders with prestressing included in the research work. National Highway Co-operative Highway Research Program (NCHRP) project.

Theoretical Model for the Shear Strength of Prestressed Concrete Beams with FRP Tendons

“…The consequences of steel corrosion in the safety, performance and maintenance cost of prestressed concrete (PC) structures have led to considering alternative materials that are almost not susceptible to corrosion, such as fiber-reinforced polymers (FRP), for prestressing reinforcement (Belarbi et al 2018). Given that research on the use of FRP as active reinforcement has been limited as compared to that on mild FRP reinforcement for reinforced concrete (RC) structures, there are still some knowledge gaps about the structural performance of FRPprestressed elements and limited guidelines for their design and construction.…”