In today’s market, it is imperative to be knowledgeable and have an edge over the competition. ACI members have it…they are engaged, informed, and stay up to date by taking advantage of benefits that ACI membership provides them.
Read more about membership
Become an ACI Member
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.
American Concrete Institute
38800 Country Club Dr.
Farmington Hills, MI
Feedback via Email
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 Externally Confined Concrete Columns
Author(s): Hamid Saadatmanesh, Mohammed Ehsani, and Mu-Wen Li
Publication: Special Publication
Appears on pages(s): 249-266
Keywords: bridges (structures); carbon; columns (supports); composite materials; confined concrete; ductility; shear stress; earthquake-resistant structures; fiber reinforced plastics; glass; strengthening; wrapping; Structural Research
Abstract:Fiber composites have become increasingly popular in the civil engineering community in recent years. The primary area of research and development of fiber composites in the concrete industry has been related to fiber reinforced plastic (FRP) reinforcing bars. Paper presents a different application of fiber composites in concrete structures, namely, confinement of concrete columns with fiber composite wraps for improved ductility and seismic performance. The confinement is accomplished by wrapping high-strength fiber composite belts around the columns. The belts are made very thin, resulting in flexibility sufficient to their being wrapped around circular as well as rectangular columns. The belts can be wrapped around the column in individual rings or in a continuous spiral. The ends of the belts can be mechanically coupled or they can be epoxy-bonded to the column. The confinement provided by the belts results in significant increase in the crushing strain of concrete well above that of unconfined concrete. This will improve the overall strength and ductility of the column. Paper presents the results of an analytical study and ongoing experimental study of concrete columns externally confined with fiber composite wraps.
Click here to become an online Journal subscriber