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Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design, construction, and materials, who share a commitment to pursuing the best use of concrete.
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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Behavior of a Structure Strengthened Using Reinforced Concrete Piers
Author(s): Thomas D. Bush, Jr., Carol Roach Talton and James O. Jirsa
Publication: Structural Journal
Appears on pages(s): 557-563
Keywords: beams (supports); columns (supports); dowels; epoxy resins; earthquake-resistant structures; failure mechanisms; frames; grout; piers; reinforced concrete; renovating; repairs; stiffness; strengthening; structural design; Structural Research
Abstract:A strengthening technique to improve the seismic behavior of a nonductile frame-type structure was investigated experimentally. The technique utilized cast-in-place piers, which partially encased the original columns and were attached using epoxy-grouted dowels. A two-thirds scale frame model consisting of two bays and three levels was subjected to statically applied cyclic lateral load. Test results indicated the governing failure, mechanism was shifted from column shear failure to flexural hinging of the beams. The strengthened frame behaved monolithically, exhibiting substantial increases in both lateral stiffness and strength.
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