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FOURTH NATIONAL WORKSHOP ON BRIDGE RESEARCH IN PROGRESS:
 
RESEARCH ABSTRACT
 
Title:
Carbon Fiber Seismic Retrofit of Poorly Confined Square Reinforced Concrete Columns Subjected to Large Axial Forces
Author(s) and Affiliation(s):
John F. Stanton, Gregory A. MacRae and Kirk J. Nosho Department of Civil Engineering University of Washington, Seattle, WA
Principal Investigator:
John F. Stanton
Sponsor(s):
Nissho Iwai American Corporation and Tonen Corporation
Research Start Date:
January 4, 1996
Expected Completion Date:
June 4, 1996
Research Objectives:
The objective of this study is to provide a better understanding of the effectiveness of wrapping square reinforced concrete columns with carbon fiber in order to improve their seismic performance.
Expected Products or Deliverables:
The products expected for the study are an improved understanding of the behavior of square reinforced concrete columns retrofitted by carbon fiber wrapping; a means of estimating the quantity of carbon fiber needed to achieve a given curvature of drift level if flexural behavior controls; and preliminary data on shear strength of fiber-wrapped columns. Limitations in the scope of the project prevented study of other important variables, such as the presence of intermediate bars in the column faces, the influence of shear due to cyclic loading, etc.

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