Flexural and Shear Behavior of Prestressed Concrete Beams Using FRP Rods as Prestressing Tendons

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Title: Flexural and Shear Behavior of Prestressed Concrete Beams Using FRP Rods as Prestressing Tendons

Author(s): Asuo Yonekura, El-Ichi Tazawa, and Hideaki Nakayama,

Publication: Special Publication

Volume: 138

Issue:

Appears on pages(s): 525-548

Keywords: beams (supports); carbon; deflection; fiber reinforced concretes; fibers; flexural strength; modulus of elasticity; prestressed concrete; prestressing steels; shear strength; tensile strength; Structural Research

Date: 9/1/1993

Abstract:
Flexural and shear behavior of prestressed concrete (PC) beams using carbon or aramid fiber reinforced plastics (CFRP or AFRP) rods are investigated experimentally and compared with those using prestressing steel bars. Since moduli of elasticity of AFRP and CFRP are about 1/4 and 2/3 that of prestressing steel bars, respectively, the deflection of beams using FRP rods is larger and ultimate flexural and shear strengths of beams are smaller than those of PC beams using prestressing steel bars with similar tensile strength of tendons and web reinforcement. The ultimate flexural and shear strengths and deflection of PC beams using FRP rods are improved by an increase of prestress in beams. 229-493