![]() Among the 12,518 bridges in Florida, 6,303 are prestressed concrete, and almost half of them are older than 40 years. For example, Florida has a long coastline, with many concrete bridges over coastal water. Thus, prestressed concrete bridges located in areas with high exposure to environmental factors (e.g., marine environments) deteriorate due to corrosion of carbon steel strands. Concrete is a permeable material where chloride ions can penetrate through and reach the internal reinforcement and carbon steel strands are highly susceptible to corrosion. Durability of prestressed concrete bridges in extremely aggressive environments is of increasing concern because of corrosion of the carbon steel strands that are typically used for prestressing. Prestressed concrete is used in structures because of its versatility, adaptability, and durability. ![]()
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