* Spun cast prestressed carbon prototype (SCPCP) * Spun cast prestressed glass prototype (SCPGP) 120 IuL 80 60 40 20 0 S-B-CSPP S-A-CPCP1 -X- CPGP1 0 50 1 22 0 5 10 15 20 25 Bent Displacement (in) Figure 7-10. Pile bent load-displacement curves for CSPP, CPCP1 and CPGP1 piles The combination of FRP reinforcement with two layers of the CFRP grid used as confining reinforcement was not enough to produce ductility factors that compared well to the steel reinforced prestressed piles used on the St. George Causeway bridge. However, some of the prototypes had ductility factors that were higher than the ductility factor of the prestressed pile with medium corrosion damage and ductility factors comparable to the ductility factor of the prestressed pile with low corrosion damage. 120 100 S80 60 40 -8- CSPP 20 -A- SCCP1 -X- SCGP1 0 0 5 10 15 20 25 Bent Displacement (in) Figure 7-11. Pile bent load-displacement curves for CSPP, SCCP1 and SCGP1 piles