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.
ACI World Headquarters
38800 Country Club Dr.
Farmington Hills, MI
ACI Middle East Regional Office
Second Floor, Office # 02.01/07
The Offices 02 Building, One Central
Dubai World Trade Center Complex
Phone: +971.4.516.3208 & 3209
Chat with Us Online Now
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: Proposed Slenderness Limit for Glass Fiber-Reinforced Polymer-Reinforced Concrete Columns Based on Experiments and Buckling Analysis
Author(s): Waseem Abdelazim, Hamdy M. Mohamed, Mohammad Z. Afifi, and Brahim Benmokrane
Publication: Structural Journal
Appears on pages(s): 241-254
Keywords: columns; design codes; first and second-order analysis; GFRP reinforcing bars; instability and buckling; lateral displacement; reinforced concrete; short and slender columns; slenderness ratio; stiffness
Abstract:To develop design provisions for concrete columns reinforced with fiber-reinforced polymer (FRP) bar for North American codes and guidelines (ACI 440.1R, CSA S806), a slenderness limit below which it is acceptable to ignore the induced second-order effects must be determined. Nevertheless, limited attempts have been made to define a safe slenderness limit for such columns. Therefore, this study aimed at experimentally and analytically investigating the buckling behavior of 12 full-scale concrete columns reinforced with glass FRP (GFRP) with slenderness ratios of 14, 17, 23, 26, and 33 under concentric loading. The impact of longitudinal reinforcement ratios and confining levels on the performance of slender GFRP-reinforced concrete (GFRP-RC) columns is also presented. Test results indicate that the GFRP reinforcement contributed significantly to resisting the applied compression loads and resulted in failure modes similar to that of the counterpart steel-reinforced concrete columns at different slenderness ratios. In addition, a theoretical buckling analysis considering a total of 50 test specimens, assembled from the current study and the literature, was developed to verify the applicability of Euler-Johnson’s stability envelope as well as the reduced and incremental modulus theories to FRP-RC columns. Good correlation was observed between the experimental results and the models developed analytically. Based on the experimental data and the developed buckling analysis, the safe limit of the slenderness ratio for FRP-RC columns bent in single curvature of 18 is proposed.
Click here to become an online Journal subscriber
Please enter this 5 digit unlock code on the web page.