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Fibers
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Recent Developments in Structural Applications of Fiber-Reinforced Concrete
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Recent Developments in Structural Applications of Fiber-Reinforced Concrete

A special issue of Fibers (ISSN 2079-6439).

Deadline for manuscript submissions: 20 July 2025 | Viewed by 1494

Special Issue Editors

Dr. Maria C. Naoum

E-Mail Website
Guest Editor
Division of Structural Engineering Science, Department of Civil Engineering, Democritus University of Thrace, 67100 Xanthi, Greece
Interests: structural health monitoring (SHM); fiber-reinforced concrete (FRC); reinforced concrete; rehabilitation & strengthening of existing R.C. structures; piezoelectric sensors; PZT; non-destructive testing (NDT); seismic performance assessment; seismic analysis
Special Issues, Collections and Topics in MDPI journals
Dr. Nikos Papadopoulos

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: structural health monitoring (SHM); reinforced concrete; rehabilita reinforced concrete; fiber-reinforced concrete (FRC); structural health monitoring (SHM); rehabilitation & strengthening of existing R.C. structures; fiber-reinforced polymer (FRP); piezoelectric sensors; PZT; electro-mechanical impedance (EMI); electro-mechanical admittance; non-destructive testing (NDT)
Special Issues, Collections and Topics in MDPI journals
Dr. George Sapidis

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: structural health monitoring (SHM); reinforced concrete; rehabilitation & strengthening of existing R.C. structures; fiber-reinforced polymer (FRP); piezoelectric sensors; PZT; electro-mechanical impedance (EMI); electro-mechanical admittance; non-destructive testing (NDT); seismic design; dynamic response
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Concrete structures, constructed using conventional concrete, are foundational elements in civil engineering and infrastructure development. However, traditional concrete exhibits inherent weaknesses in tensile strength and resistance to cracking. Fiber-reinforced concrete (FRC) addresses these limitations by incorporating fibers into the concrete matrix. Fibers enhance tensile strength, toughness, and crack resistance, making FRC advantageous in applications with enhanced crack control, flexibility, and durability. Furthermore, using environmentally friendly fibers and adopting sustainable techniques in FRC contribute to reducing traditional concrete's significant environmental impact while maintaining or improving its overall performance. Therefore, FRC represents a forward-thinking approach to sustainable construction, combining the structural benefits of fiber reinforcement with eco-friendly materials and processes.

The distinctive properties of FRC have evolved processes in the construction and design of structures, focusing on the importance of highlighting the latest innovations and research in this field. This Special Issue combines cutting-edge research and practical applications and invites original contributions focusing on FRC's properties, behavior, design, and applications in civil engineering and construction projects. Furthermore, this Special Issue will advance knowledge on the performance and behavior of fiber-reinforced concrete in diverse construction environments, offering valuable insights for researchers, engineers, and practitioners engaged in experimental, theoretical, case-based, and numerical studies. Submissions are encouraged from a broad range of topics, including but not limited to the following:

  • Mechanical properties of FRC under various loading conditions (tensile, compressive, shear);
  • Fiber–matrix interaction and bonding mechanisms;
  • Influence of fiber type (steel, glass, synthetic, natural) and content on concrete performance;
  • Durability and long-term behavior of FRC in aggressive environments;
  • Behavior of FRC under static and dynamic loading conditions;
  • Flexural, shear, and torsional performance of FRC elements (beams, slabs, walls);
  • Seismic response and design of fiber-reinforced concrete structures;
  • Advanced numerical models for simulating the behavior of FRC structures;
  • Finite element analysis (FEA) of fiber-reinforced concrete elements;
  • Damage and fracture mechanics in FRC;
  • Computational techniques for optimizing fiber distribution and orientation;
  • Performance of FRC in green building and sustainable construction;
  • Case studies on the use of FRC in large-scale infrastructure projects (bridges, tunnels, roads);
  • Applications of FRC in the repair and rehabilitation of existing structures.

Dr. Maria C. Naoum
Dr. Nikos Papadopoulos
Dr. George Sapidis
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. Fibers is an international peer-reviewed open access monthly 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 2000 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 concrete (FRC)
  • mechanical response
  • durability
  • experimental investigation
  • numerical analysis
  • fracture mechanism
  • mechanical properties
  • steel fibers
  • synthetic fibers
  • natural fibers

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Further information on MDPI's Special Issue policies can be found here.

Published Papers (2 papers)

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Research

26 pages, 10042 KiB  
Article
Verification of Crack Width Evaluation in Fiber-Reinforced Cementitious Composite Reinforced with Various Types of Fiber-Reinforced Polymer Bars
by Hideto Sasaki, Helen Negash Shiferaw and Toshiyuki Kanakubo
Fibers 2025, 13(5), 60; https://doi.org/10.3390/fib13050060 - 7 May 2025
Viewed by 173
Abstract
This study aims to verify the adaptability of a crack width evaluation method for fiber-reinforced cementitious composite (FRCC) proposed by the authors to various combinations of fiber-reinforced polymer (FRP) bars and FRCCs. As this evaluation method requires bond constitutive laws between FRP bars [...] Read more.
This study aims to verify the adaptability of a crack width evaluation method for fiber-reinforced cementitious composite (FRCC) proposed by the authors to various combinations of fiber-reinforced polymer (FRP) bars and FRCCs. As this evaluation method requires bond constitutive laws between FRP bars and FRCC, bond tests between FRP and FRCCs were conducted. The FRP and FRCC combinations used in the bond tests were spiral-type CFRP and GFRP bars with PVA-FRCC, as well as strand-type CFRP bars with aramid–FRCC. The maximum bond stress tended to increase as the rib–height ratio of the spiral-type bars increased. When the rib–height ratio increased by 50%, the maximum bond stress of the CFRP and GFRP bars increased by 11% and 33%, respectively. For aramid–FRCC, the average maximum bond stress in the FRCC with a 0.25% volume fraction was 1.67 times that in mortar, and that in 0.50% was 2.01 times that in mortar. The bond constitutive laws were modeled using the trilinear model. Verifications of the method’s adaptability were conducted using tension tests on prisms made of spiral-type CFRP and GFRP bars with PVA-FRCC. As a result of the tension tests, when the FRP strain reached approximately 0.3%, the crack width was about 0.2 mm for CFRP bars and about 0.1 mm for GFRP bars. Verifications were also conducted using four-point bending tests on strand-type CFRP bar beams with aramid–FRCC. The crack width at the same FRP strain tended to become smaller as the fiber volume fraction of FRCC increased. When the FRP strain reached approximately 0.2%, the average crack width of the mortar specimen was around 0.25 mm, whereas it was about 0.15 mm in FRCC with a 0.25% volume fraction and about 0.10 mm at 0.5%. The test results for FRP strain versus crack width relationships were compared with the calculations using the crack width prediction formula. The test results and calculation results were in good agreement. Full article
(This article belongs to the Special Issue Recent Developments in Structural Applications of Fiber-Reinforced Concrete)
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24 pages, 21943 KiB  
Article
Strengthening Fire-Damaged Lightweight Concrete T-Beams Using Engineered Cementitious Composite with Basalt Fiber-Reinforced Polymer Grid
by Haider M. Al-Baghdadi and Mohammed M. Kadhum
Fibers 2025, 13(1), 7; https://doi.org/10.3390/fib13010007 - 13 Jan 2025
Viewed by 899
Abstract
Lightweight concrete (LWC) is a long-standing development in the area of construction materials. LWC has become increasingly important for sustainable construction due to its reduced susceptibility to cracking. However, when exposed to extreme temperatures during fires, LWC can lose its compressive strength and [...] Read more.
Lightweight concrete (LWC) is a long-standing development in the area of construction materials. LWC has become increasingly important for sustainable construction due to its reduced susceptibility to cracking. However, when exposed to extreme temperatures during fires, LWC can lose its compressive strength and ductility. This study investigates the performance of lightweight expanded clay aggregate (LECA) concrete T-beams exposed to elevated temperatures. The research also focuses on the use of an engineered cementitious composite with a basalt fiber-reinforced polymer grid (ECCBFG) as a rehabilitation method for fire-damaged T-beams. Key variables considered include the concrete cover thickness (20 and 30 mm), fire exposure duration (30 and 60 min), and thickness of the ECCBFG layer. Thermocouples were installed at various points within the beams to monitor the heat gradient across the cross-section. Fourteen concrete beam specimens were tested, including control beams, fire-damaged beams, and beams strengthened with the ECCBFG layer. Key performance parameters, such as the energy absorption, cracking load, ductility index, maximum load capacity, and corresponding displacement, were analyzed. The experimental results showed that the strengthened beams outperformed the fire-damaged beams, closely matching the performance of undamaged reference beams in most aspects, except energy absorption. The findings suggest that further research is needed to optimize certain performance indicators and address challenges in strengthening fire-damaged beams. Full article
(This article belongs to the Special Issue Recent Developments in Structural Applications of Fiber-Reinforced Concrete)
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