Experimental Research on Short-Term and Long-Term Mechanical Properties of Prestressed FRP Tendons/Cables

Fiber-reinforced polymer （FRP） composites are high-performance materials characterized by their high strength， lightweight， corrosion resistance， and excellent fatigue resistance， making them highly promising for prestressed structural applications. However， FRPs are typically orthotropic materials， exhibiting significantly lower strength and modulus perpendicular to the fiber direction compared to the longitudinal direction， posing challenges for the application of FRP tendons/cables. Existing research findings remain insufficient to support the standardized use of FRP tendons/cables in prestressed structures. Based on recent experimental studies and theoretical analyses of FRP tendons/cables， this paper summarizes the testing methods， failure modes， mechanical characteristics， and other relevant conclusions under different loading conditions. It systematically examines the influence of various factors—such as fiber type and content， tendon/cable diameter， manufacturing processes， and testing methods—on the short- and long-term mechanical properties of FRP tendons/cables. Furthermore， future research and development directions for FRP tendons/cables are outlined， providing valuable insights for both academic research and practical engineering applications.