Behavior of Externally Prestressed Concrete Girdersby Mohammad R. Ehsani, Univ of Arizona, United States,
Hamid Saadatmanesh, Univ of Arizona, United States,
Abstract: A new technique for prestressing concrete girders is presented. The girders are externally prestressed by epoxy-bonding fiber-composite plates to the tension flange of the cambered girders. This technique can be applied to single-span as well as continuous-span girders. Four 8 in. × 18 in. rectangular beams with a clear span of 15 feet have been constructed. The beams will be tested to failure after they are externally prestressed by bonding fiber-composite plates along their full lengths. The load-deflection behavior of these beams will be analyzed.
Subject Headings: Prestressing | Prestressed concrete | Beams | Plate girders | Fiber reinforced concrete | Epoxy
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