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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 Behavior of Lightweight and Normal Weight Concrete Columns
Author(s): B. G. Rabbat, J. I. Daniel, T. L. Weinmann, and N. W. Hanson
Publication: Journal Proceedings
Appears on pages(s): 69-79
Keywords: buildings; columns (supports); confined concrete; cyclic loads; deformation; ductility; earthquake resistant structures; flexural strength; frames; lightweight concretes; load tests (structural); strength; reinforced concrete; structural design.
Abstract:An experimental investigation was conducted to provide data on the behavior of lightweight and normal weight reinforced concrete columns subjected to simulated seismic forces. Sixteen full-scale column-beam assemblies representing a portion of a frame subjected to simulated seismic loading were tested. Test variables included concrete type, column size, amount of main column steel, size and spacing of column confining hoops, and magnitude of column axial load. The columns were subjected to constant axial load and slow moment reversals at increasing inelastic deformations. Test data showed that properly designed lightweight concrete columns maintained ductility and strength when subjected to large inelastic deformations from load reversals. Confinement requirements for normal weight concrete columns were shown to be applicable to lightweight concrete columns with axial loads up to 30 percent of the column design strength. Supplementary crossties engaging the column steel may be used to confine the core of lightweight and normal weight concrete columns.
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