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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.
Showing 1-5 of 986 Abstracts search results
Document:
CI4707NexInsights
Date:
July 1, 2025
Publication:
Concrete International
Volume:
47
Issue:
7
Abstract:
A new certification program co-sponsored by NEx: An ACI Center of Excellence for Nonmetallic Building Materials is now available through ACI Certification. The program, titled “GFRP Reinforcing Bar Inspector” is designed to qualify individuals responsible for inspecting the installation of glass fiber-reinforced polymer (GFRP) reinforcing bars in concrete construction. This program reinforces NEx’s mission to advance the safe and effective use of nonmetallic materials.
CI4704Ehsani
April 1, 2025
Author(s):
Mo Ehsani
4
This article introduces the latest fiber-reinforced polymer panel system developed by the author—SPiRe®+. These panels can serve as formwork, corrosion resistant reinforcement, and waterproofing. With their flat and smooth exterior face and protruding T-profiles on the interior face, the panels act as reinforcing elements for strengthening beams, slabs, and walls.
CI4704NexInsights
There is a lack of comprehensive guidelines for the use of fiber-reinforced polymer (FRP) dowels in concrete pavement construction. In light of this, NEx: An ACI Center of Excellence for Nonmetallic Building Materials has announced a newly published document SG23.03 (25): NEx Guideline: FRP Dowels in Concrete Pavements.
SP365_10
March 1, 2025
Anca Ferche and Vahid Sadeghian
Symposium Papers
365
Developed 40 years ago by Frank Vecchio and Michael Collins, the Modified Compression Field Theory (MCFT) and its successor, the Disturbed Stress Field Model (DSFM), have proven to be robust methodologies in modeling the response of concrete structures. Originally developed for newly designed concrete structures, they have been refined over the years to expand their applicability to various engineering problems, including modeling deteriorated and repaired structures. This paper reviews the evolution and application of MCFT in modeling and assessment of deteriorated and repaired concrete structures. The first part focuses on the application of MCFT to advanced field structural assessment, including stochastic analysis procedures that incorporate field data. The second part discusses the evolvement of MCFT to account for two of the most common deterioration mechanisms, reinforcement corrosion and alkali-silica reaction. The last part explores the application of the model to structures repaired with fiber-reinforced polymer composites. It is concluded that the extension of the MCFT formulation has enabled it to reliably predict the behavior of both deteriorated and repaired concrete structures.
DOI:
10.14359/51746690
SP365_08
Taylor Brodbeck, Giorgio T. Proestos, and Rudolf Seracino
As glass fiber-reinforced polymer (GFRP) reinforcing bars become more widely used, there is a need to better understand the behavior of GFRP reinforced members. GFRP reinforced deep beams are one example of concrete members that are not currently well understood. Besides the linear elastic behavior of GFRP material, another significant difference between GFRP and steel reinforcement is the difference in surface treatment. While deformation requirements are prescribed for steel reinforcing bars, FRP bars may have different surface treatments depending on the manufacturer. The different surface treatments lead to different bond characteristics and, ultimately, a difference in performance. This research explores the effect of bond through both an analytical study using VecTor2 and a series of large-scale deep beam tests reinforced with GFRP bars. Analytically, VecTor2 was able to capture the behavior of published experiments from the literature, reinforced with sand-coated GFRP bars. An alternative surface preparation consisting of machined indentations was introduced as a parameter in this study, resulting in significant changes in the performance and behavior of the deep beams. VecTor2 was also able to capture the behavior of these beams when adjustments were made to the bond model to match the observations of the experiments.
10.14359/51746688
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