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Polymers
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Fiber Reinforced Polymers Applications as Reinforcement of Concrete Structures—Design Aspects,...
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Fiber Reinforced Polymers Applications as Reinforcement of Concrete Structures—Design Aspects, Tests and Analysis, 2nd Edition

A special issue of Polymers (ISSN 2073-4360). This special issue belongs to the section "Polymer Applications".

Deadline for manuscript submissions: 30 April 2025 | Viewed by 1504

Special Issue Editors

Dr. Violetta Kytinou

E-Mail Website
Guest Editor
Laboratory of Reinforced Concrete and Seismic Design of Structures, Civil Engineering Department, School of Engineering, Democritus University of Thrace, 67100 Xanthi, Greece
Interests: FRP; RC; reinforced concrete; SFRC; fiber reinforced concrete; beam; shear; flexure; FEM; finite elements; columns; joints; repair; strengthening; rehabilitation; RC jacket
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Constantin Chalioris

E-Mail Website
Guest Editor
Laboratory of Reinforced Concrete and Seismic Design of Structures, Civil Engineering Department, School of Engineering, Democritus University of Thrace, 67100 Xanthi, Greece
Interests: FRP; reinforced concrete; shear; tentioned concrete; steel fiber reinforced concrete; repair; tortion; structural health monitoring; strengthening and structural rehabilitation
Special Issues, Collections and Topics in MDPI journals
Dr. Adamantis Zapris

E-Mail Website
Guest Editor
Laboratory of Reinforced Concrete and Seismic Design of Structures, Civil Engineering Department, School of Engineering, Democritus University of Thrace, 67100 Xanthi, Greece
Interests: reinfrorced concrete; fiber reinforced polymers; FRP; CFRP; shear; tortion; beams; joints; strengthening; rehabilitation; anchorage; anchors; externally bonded; NSM

Special Issue Information

Dear Colleagues,

The investigation of Fiber-Reinforced Polymers (FRPs) as a main, supplementary and strengthening reinforcement in concrete structures has received significant attention in recent years. The growing need for non-corrosive and durable reinforcement has resulted in a rise in the number of FRP reinforcement manufacturers worldwide, and these have produced a wide range of materials with a variety of properties including textile composite reinforcement and FRP bars. The successful application of FRPs as a reinforcement in concrete structures is becoming more frequent as different national and international provisions and recommendations regarding the performance of construction and design with FRP have been established in recent decades. Researchers have focused on the investigation of FRP composites to create novel and efficient solutions to address the ever-increasing challenges associated with aging in infrastructure. Innovative FRP reinforcement solutions are being presented more often, and the benefits of these implementations over traditional steel reinforcing methods are being proven.

This Special Issue will highlight current developments and innovations regarding the use of FRP as a reinforcement in existing or newly constructed concrete structures. Studies involving the integration of FRPs in concrete structural members and structures, including traditional and modern experimental, numerical and analytical investigations, are welcome. The scope of this Special Issue includes, but is not limited to, the following topics: the use of FRP systems in reinforced concrete structural members, as well as the performance of FRPs (including bond performance) under monotonic and cyclic loadings and various environmental exposures.

Dr. Violetta Kytinou
Prof. Dr. Constantin Chalioris
Dr. Adamantis Zapris
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Polymers is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • fiber reinforced polymers (FRPs)
  • fiber-reinforced bars
  • concrete
  • reinforced concrete (RC)
  • repair
  • strengthening
  • mechanical properties
  • experimental study
  • bond behavior
  • numerical modeling
  • structural behavior
  • field applications

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Published Papers (2 papers)

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Research

27 pages, 5828 KiB  
Article
Flexural Behavior of Thin Concrete Slabs Reinforced with Surface Embossed Grid-Type Carbon-Fiber Composites
by Kyung-Min Kim, Sung-Woo Park and Kyung-Jae Min
Polymers 2025, 17(3), 411; https://doi.org/10.3390/polym17030411 - 4 Feb 2025
Viewed by 413
Abstract
Fiber-reinforced polymers (FRPs) are being increasingly used to replace rebars as reinforcements for concrete. In this study, the flexural behavior of one-way concrete slabs reinforced with a grid-type carbon FRP (CFRP) (carbon grid), in the form of strands with embossed surfaces, was experimentally [...] Read more.
Fiber-reinforced polymers (FRPs) are being increasingly used to replace rebars as reinforcements for concrete. In this study, the flexural behavior of one-way concrete slabs reinforced with a grid-type carbon FRP (CFRP) (carbon grid), in the form of strands with embossed surfaces, was experimentally investigated. The experimental variables included the effective depth, number of carbon grid layers, and concrete compressive strength. The results exhibit that the surface embossing of the CFRP strands effectively improves their bonding with concrete based on the crack formation pattern. Concrete specimens reinforced with carbon grids exhibited an increased maximum load and stiffness as the effective depth, number of carbon grid layers, and concrete compressive strength increased. Among the experimental variables, the effective depth exhibited the greatest influence on the flexural behavior of the carbon-grid-reinforced concrete specimen. Furthermore, the ratios of the experimental to calculated flexural strength values for all carbon-grid-reinforced concrete specimens ranged from 0.74 to 1.22. Based on the results, a trilinear load–deflection curve was proposed to simulate the flexural behavior of carbon-grid-reinforced concrete members, considering the bond property between the concrete and the carbon grid. The proposed trilinear load–deflection curve reasonably simulated the flexural behavior of the specimens reinforced with carbon grids. Full article
(This article belongs to the Special Issue Fiber Reinforced Polymers Applications as Reinforcement of Concrete Structures—Design Aspects, Tests and Analysis, 2nd Edition)
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13 pages, 5830 KiB  
Article
Shear Capacity of Hollow High-Performance Concrete Beams with Cross-Wound Carbon Fiber-Reinforced Polymer Reinforcement
by Tomáš Vlach, Jakub Řepka, Jakub Hájek, Jan Pošta, Richard Fürst and Petr Hájek
Polymers 2025, 17(1), 75; https://doi.org/10.3390/polym17010075 - 30 Dec 2024
Viewed by 583
Abstract
This paper introduces cross-wound CFRP shear reinforcement of hollow HPC beams. The CFRP reinforcement was manufactured in the form of a square tubular mesh from carbon rovings oriented at ±45° from the longitudinal axis. The shear reinforcement was made in two variants from [...] Read more.
This paper introduces cross-wound CFRP shear reinforcement of hollow HPC beams. The CFRP reinforcement was manufactured in the form of a square tubular mesh from carbon rovings oriented at ±45° from the longitudinal axis. The shear reinforcement was made in two variants from carbon yarns with linear densities of 1600 and 3700 tex. Tensile reinforcement made of BFRP bars was positioned directly around the hollow core and was used as a platform for manual winding of the shear reinforcement. The hollow beams were subjected to a three-point bending test with four configurations of the tensile BFRP reinforcement for better evaluation of the effect of the shear reinforcement under different conditions. The 1600 tex shear reinforcement increased the ultimate flexural strength by at least 89% compared to specimens without any shear reinforcement. The 3700 tex shear reinforcement yielded slightly better results in most cases but was not utilized to its full shear capacity as these specimens always failed in shear due to the delamination of the concrete matrix from the shear reinforcement. There was too much reinforcement in the beam cross-section. Full article
(This article belongs to the Special Issue Fiber Reinforced Polymers Applications as Reinforcement of Concrete Structures—Design Aspects, Tests and Analysis, 2nd Edition)
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