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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: Seismic Performance of Reinforced Concrete Piers with Bond-Controlled Reinforcements
Author(s): Govinda Raj Pandey and Hiroshi Mutsuyoshi
Publication: Structural Journal
Appears on pages(s): 295-304
Keywords: bond; columns; ductility; reinforced concrete; seismic behavior; shear
Abstract:An extensive experimental investigation was carried out to examine how controlling the bond of the longitudinal reinforcements can improve seismic performance factors, such as shear strength and ductility, of reinforced concrete (RC) structures. The experiment employed 15, 300 x 300 mm square RC columns tested under reversed cyclic loading. The columns were of six different bond conditions, varying from perfect bond, with the use of ordinary deformed bars, to perfect unbond. The other test variables included the shear span-depth ratio, shear to flexural strength ratio, and the length of unbonded region. The results of the experiment revealed that the failure mode at the ultimate state could be changed from shear to flexure by reducing the bond strength of the longitudinal bars. The test results also showed that RC columns reinforced with bond-controlled bars had significantly better shear strength and ductility than RC columns reinforced with ordinary bars.
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