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: Effective Moment of Inertia Expression for
Concrete Beams Reinforced with Fiber-Reinforced Polymer (FRP)
Author(s): H. Vogel and D. Svecova
Publication: Special Publication
Appears on pages(s): 77-94
Keywords: deflection; fiber-reinforced polymer (FRP); serviceability; tension stiffening.
Abstract:Due to concerns with corrosion, the use of fiber reinforced polymer (FRP) as a replacement to conventional steel reinforcement has greatly increased over the last decade. However, elastic modulus values of some commercially available FRP reinforcement hardly reach 20% of that for conventional
steel. Existing code relationships for conventional steel have been modified to address this proprietary difference but the modifications are restricted by the empirical nature of the expressions. This paper provides an alternate approach to estimate the deflection of concrete beams by considering effects of tension stiffening that incorporate material properties of the reinforcement as well as the effects of concrete non-linearity in compression. A database containing experimental load-deflection records from 139 glass FRP (GFRP) and 48 carbon FRP (CFRP) reinforced concrete beams was used to calibrate
a tension stiffening model for the proposed approach and establish its accuracy as well as precision through statistical analysis. Results were compared to those obtained from existing relationships and indicate that the revised approach provides higher accuracy at service conditions ranging from 25% to 80% of ultimate.
Click here to become an online Journal subscriber