Test on Prestressed Concrete Beam with AFRP Spiral Confinement and External Aramid Tendons

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Title: Test on Prestressed Concrete Beam with AFRP Spiral Confinement and External Aramid Tendons

Author(s): C.J. Burgoyne and H.Y. Leung

Publication: Special Publication

Volume: 272

Issue:

Appears on pages(s): 69-86

Keywords: aramid fiber, beam, confinement, prestressed concrete, testing.

Date: 10/1/2010

Abstract:
This paper describes an experimental study of a new form of prestressed concrete beam. Aramid Fiber Reinforced Polymers (AFRPs) are used to provide compression confinement in the form of interlocking circular spirals, while external tendons are made from parallel-lay aramid ropes. The response shows that the confinement of the compression flange significantly increases the ductility of the beam, allowing much better utilization of the fiber strength. The failure of the beam is characterized by rupture of spiral confinement reinforcement.