Field Performance Evaluation of Multiple Fiber-Reinforced Polymer Bridge DeckSystems over Existing Girders: Phase 1

摘要

The research work presented in this report is focused on the experimentalevaluation of fiber reinforced polymer (FRP) deck systems, which have been used on two side-by-side bridges on Route 49 in Dayton, Ohio (MOT-49-10). The long spans of the bridges allowed evaluation of FRP deck systems from four FRP deck manufacturers under similar loading and environmental conditions. The first phase of the project, reported herein, focused on the performance criteria and extensive laboratory testing. The objectives of Phase I of the project were to: (1) Assess the performance criteria developed by Ohio DOT for FRP deck systems; (2) Evaluate the mechanical properties of the FRP deck materials; (3) Evaluate the bending and shear stiffness of the FRP deck panels; (4) Evaluate the ultimate strength response of the FRP deck panels; (5) Evaluate the fatigue response of the FRP deck panels on steel girders at high and low temperature, and (6) Evaluate the environmental durability of the FRP deck materials. The fabricators provided FRP material coupons representative of the deck systems. The coupons were laminates with the same type of multi-axial reinforcement, fiber content and resin system that were used for the deck panels. The following properties were measured: tensile strength and tensile modulus in the longitudinal and transverse directions and interlaminar shear strength in the longitudinal direction. The materials were found to be consistent in their properties and the coefficients of variation are relatively small.