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: Durability of FRP-Concrete Bond in FRP-Strengthened Bridges
Author(s): Nemkumar Banthia, Aidin Abdolrahimzadeh, Marc Demers, Aftab Mufti, and Shamim Sheikh
Publication: Concrete International
Appears on pages(s): 45-51
Keywords: bridges, FRP, strengthening, bond, durability, infrared thermography
Abstract:After years of service, the durability of FRP-concrete bond in structures strengthened using FRPs remains uncertain. To investigate the durability of FRP-concrete bond, four in-service bridges in Canada strengthened using externally bonded FRPs were studied. To measure the integrity of the bond, mechanical pull-off tests were performed. In some cases, infrared thermography was used to detect debonding. Results indicate that thermography is an excellent way of detecting debonding between FRP and concrete. Bond is noted to be strongly influenced by the placement technique, exposure severity, location on the bridge, and type of loading. Generally speaking, while the bond in most instances is fairly good, in some cases, a severe deterioration in bond has occurred. This is a cause for concern.
Click here to become an online Journal subscriber