2025 Volume 81 Issue 14 Article ID: 24-14001
Prestressed concrete (PC) is a structural method that can effectively reinforce concrete, which has a weak tensile property. However, in recent years, deterioration phenomena have been confirmed in which rein-forcing bars and prestressing steel members placed inside the structure corrode. Because this deterioration phenomenon progresses inside the concrete, it is difficult to detect early. Therefore, various measures to improve the durability of PC structures have been developed. One of these methods is the non-metallic bridge that is a composite structure that uses aramid FRP rods, which are made by molding aramid fibers into a rod shape with resin, as tension members and completely eliminates the use of reinforcing bars and ordinary prestressing steel members, which are likely to corrode. In this paper, an overview of various experiments conducted to realize this structure are provided and introduced examples of applying this structure to an actual structure. Furthermore, the outlook for expanding the application of such new structures is presented.
