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: Long-Term Performance of Glass Fiber-Reinforced Polymer Reinforcement Embedded in Concrete
Author(s): David Trejo, Paolo Gardoni, and Jeong Joo Kim
Publication: Materials Journal
Appears on pages(s): 605-613
Keywords: Corrosion; deterioration; glass fiber-reinforced polymer; model; reinforcement; tensile capacity.
Abstract:The chemical reactions that occur in glass fiber-reinforced polymer (GFRP) bars when embedded in concrete result in reduced tensile capacities of the bars over time. ACI recognized this and places reduction factors on the allowable design strength of GFRP reinforcing bars. There are limited longer-term data on GFRP bars embedded in concrete available, however, and probabilistic models based on GFRP bars embedded in concrete are not available to validate these reduction factors. This study investigated GFRP reinforcing bars embedded in concrete and exposed to unsubmerged conditions for 7 years. The results indicate lower rates in the loss of capacity when compared with data from the literature on accelerated exposure. Linear deterministic models indicate that the ACI reduction factors may be unconservative, but these models are likely too simple to represent real conditions. Probabilistic models to assess the time-variant capacity of GFRP bars embedded in concrete to better assess the capacity loss and ACI design reduction factors for GFRP reinforced structures are needed.
Click here to become an online Journal subscriber