Durability of fibre-reinforced polymers (FRP) used in concrete structures.

摘要

The research on the structural performance of Fibre Reinforced Polymers (FRP) has shown the these materials haw great potential for application in concrete structures. Not enough test data, however, are available to predict the long-term performance of the and improved structures. Degradation problems can wise when polymers are exposed to heat, light, weathering, high-energy radiation, chemicals, and microorganisms.;The objective of this research is to study the durability of FRP used in concrete structures by exposing the material to simulated environmental conditions in the laboratory. The conditions that were studied in this research project are freeze-thaw and ultraviolet radiation.;Four types of specimen were studied for the freeze-thaw. The specimens are: (1) Fibre Reinforced Plastic (FRP) coupons, (2) FRP to FRP single lap bonded panels, (3) FRP wrapped cylinders, and (4) FRP to concrete bonded prisms. Only the first two types of the were studied for the ultraviolet radiation. The results showed that the above exposures have minimal effect on the mechanical performance of Carbon- and Glass-FRP.