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Buildings
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Innovative Applications of Fiber-Reinforced Concrete and Composites for Structural Reinforcement
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Innovative Applications of Fiber-Reinforced Concrete and Composites for Structural Reinforcement

A special issue of Buildings (ISSN 2075-5309). This special issue belongs to the section "Building Materials, and Repair & Renovation".

Deadline for manuscript submissions: 31 August 2026 | Viewed by 2278

Editors

Prof. Dr. Jun Tian

E-Mail Website
Guest Editor
School of Environment and Civil Engineering, Dongguan University of Technology, Dongguan, China
Interests: ultra-high-toughness cement-based composite materials; intelligent functional cement-based composite materials; prestressed FRP structure reinforcement; strengthening and durability improvement of bridge structure under coastal erosion environments
Special Issues, Collections and Topics in MDPI journals
Dr. Yanjie Xue

E-Mail Website
Guest Editor
College of Construction Engineering, Jilin University, Jilin, China
Interests: FRP; shape memory alloy; prestress strengthening; FRP/SMA composites; fiber-reinforced polymer
Dr. Hui Huang

E-Mail Website
Guest Editor
School of Civil Engineering and Architecture, Southwest University of Science and Technology, Mianyang, China
Interests: fiber-reinforced concrete; FRP; seismic strengthening; structural reinforcement
Special Issues, Collections and Topics in MDPI journals
Dr. Zhongfeng Zhu

E-Mail Website
Guest Editor
College of Civil and Transportation Engineering, Shenzhen University, Shenzhen, China
Interests: ECC; UHPC; FRP-ECC; FRP–steel composite bar; lattice discrete particle model; cycling behavior
Dr. Mingyuan Liu

E-Mail Website
Guest Editor
School of Environment and Civil Engineering, Dongguan University of Technology, Dongguan, China
Interests: fiber-reinforced concrete materials and structures; FRP-reinforced concrete structures; engineered cementitious composites; functionally recoverable structures

Special Issue Information

Dear Colleagues,

Fiber-reinforced concrete and composites have become increasingly pivotal materials in structural engineering, offering exceptional strength, durability, and adaptability for reinforcement applications. This Special Issue of Buildings aims to showcase innovative research and practical applications in this dynamic field, covering topics such as fiber-reinforced concrete, ultra-high-toughness cement-based composites, FRP composites, prestress strengthening, seismic reinforcement, and durability improvement of structures under harsh environments like coastal erosion. This Special Issue will focus on, but is not limited to, the following topics:

  • Fiber-reinforced concrete and composites;
  • Ultra-high-toughness cement-based composites;
  • Prestress strengthening of structures;
  • Seismic reinforcement of structures;
  • Durability improvement of structures;
  • Sustainable and green cement-based materials.

Prof. Dr. Jun Tian
Dr. Yanjie Xue
Dr. Hui Huang
Dr. Zhongfeng Zhu
Dr. Mingyuan Liu
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 250 words) can be sent to the Editorial Office for assessment.

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-anonymized peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Buildings 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 2600 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
  • fiber-reinforced composites
  • ultra-high-toughness cement-based composites
  • engineered cementitious composites
  • structural reinforcement
  • prestress strengthening
  • durability improvement
  • mechanical properties

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  • Greater discoverability: Special Issues support the reach and impact of scientific research. Articles in Special Issues are more discoverable and cited more frequently.
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Further information on MDPI's Special Issue policies can be found here.

Published Papers (4 papers)

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Research

22 pages, 11223 KB  
Article
Influence of Different Diffusion Depths on Chloride Migration Coefficient and the Calibration Methodology
by Changsheng Ma, Changjie Wu, Hua Wang, Pinjie Zhao, Zexian Wei, Yunchao Tang and Yehua Ling
Buildings 2026, 16(10), 1996; https://doi.org/10.3390/buildings16101996 - 19 May 2026
Viewed by 339
Abstract
In the rapid chloride migration (RCM) test, the chloride concentration at the chromogenic boundary often differs from the standard value of 0.07 mol/L, leading to an overestimated migration coefficient, especially when the penetration depth is shallow. This study investigates the effect of penetration [...] Read more.
In the rapid chloride migration (RCM) test, the chloride concentration at the chromogenic boundary often differs from the standard value of 0.07 mol/L, leading to an overestimated migration coefficient, especially when the penetration depth is shallow. This study investigates the effect of penetration depth on the measured migration coefficient and proposes a practical correction method. RCM tests were carried out on four concrete mixtures with fly ash and slag under various voltages, two curing ages, and multiple test durations. The results show that the migration coefficient decreases as the penetration depth increases. A simple empirical correction model is introduced, using a chromogenic error ε obtained by fitting the experimental data. After correction, most of the modified migration coefficients fall within ±20% of the true values. The proposed model provides a useful engineering tool for rapid estimation of chloride migration coefficients in field laboratories where direct chloride concentration measurement is not available. Full article
(This article belongs to the Special Issue Innovative Applications of Fiber-Reinforced Concrete and Composites for Structural Reinforcement)
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23 pages, 5548 KB  
Article
Multi-Scale Investigation of Fracture Behavior of Polypropylene Fiber-Reinforced Concrete Segment During Bending Test
by Yao Hu, Shifan Qiao, Yaqiang Wang and Jiaqi Chen
Buildings 2026, 16(5), 1060; https://doi.org/10.3390/buildings16051060 - 7 Mar 2026
Viewed by 513
Abstract
Polypropylene fibers provide an innovative solution for enhancing the crack resistance of tunnel lining segments. However, existing macro-models obscure the distinct effects of fibers on the mortar and ITZ, while explicit meso-modeling remains computationally prohibitive. This study develops a multi-scale modeling framework to [...] Read more.
Polypropylene fibers provide an innovative solution for enhancing the crack resistance of tunnel lining segments. However, existing macro-models obscure the distinct effects of fibers on the mortar and ITZ, while explicit meso-modeling remains computationally prohibitive. This study develops a multi-scale modeling framework to investigate PFRC segment fracture under bending. The framework integrates a 3D meso-scale module for calibrating fracture-related material properties, a 3D macro-scale module for predicting global displacements, and a 2D meso-scale module for resolving local fracture processes. A full-scale bending test was performed to validate the framework and to examine the effects of fiber content at both scales. Both the full-scale test and numerical simulations show that the segment response exhibits three stages: elastic, damage development, and cracking at the design load. Numerical simulations further reveal that an optimal fiber content of 0.4% reduces the vertical displacement at the load point by 9.8% and the horizontal displacement at the edge point by 2.9% relative to the fiber-free case. Meso-scale simulations show that 0.4% fibers decrease the bottom crack width from 0.0868 to 0.0770 mm (−11.29%) and limit internal crack connectivity. Although fibers may locally promote ITZ cracking due to reduced mortar–aggregate bonding, a strengthened mortar matrix suppresses crack penetration and connected crack networks. A pronounced high-damage peak in the ITZ near the failure threshold confirms the ITZ as the governing weak link; therefore, further improvements may require ITZ-strengthening strategies. Full article
(This article belongs to the Special Issue Innovative Applications of Fiber-Reinforced Concrete and Composites for Structural Reinforcement)
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15 pages, 2666 KB  
Article
Investigation of the Flow and Mechanical Performances of Foamed Concrete Used for Filling Cracks in the Base Layer of Asphalt Pavement
by Yinfei Du, Siyi Li, Lingxiang Kong, Jun Tian, Jinyun Yuan and Hao Fu
Buildings 2026, 16(5), 1036; https://doi.org/10.3390/buildings16051036 - 6 Mar 2026
Cited by 1 | Viewed by 346
Abstract
Addressing the challenge that traditional flowability criteria cannot accurately characterize the grouting filling efficacy of foam concrete (FC) for cracks and voids in the base layer of asphalt pavement, this paper established a flowability evaluation method tailored for road grouting. Firstly, FC with [...] Read more.
Addressing the challenge that traditional flowability criteria cannot accurately characterize the grouting filling efficacy of foam concrete (FC) for cracks and voids in the base layer of asphalt pavement, this paper established a flowability evaluation method tailored for road grouting. Firstly, FC with varying flow performances were prepared by controlling the water–cement (W/C) ratio and water-reducing agent (WRA) dosage. Secondly, the flow cone method and micro-slump meter on a smooth flow degree pan method (MSM) characterized their flow performances. The porous Marshall specimens were constructed to simulate the crack–void structure of the base layer, and grouting plumpness was calculated using sectional image processing methods. Building upon this, gray relational analysis and regression analysis were employed to establish quantitative relationships between multiple factors and grouting plumpness. The results show that increasing W/C ratio and WRA dosage could improve the flow performance of FC, but reduce the compressive strength. Specifically, when the W/C ratio increased from 0.40 to 0.45, flow time decreased by 72.2% and flow diameter increased by 25%. Increasing WRA dosage from 0.3% to 0.5% could reduce flow time by 16% and increase flow diameter by 10%. Gray relational analysis revealed the strong correlations between flow indexes and grouting plumpness. The gray relational degree was 0.87 between grouting plumpness and flow diameter. In addition, the gray correlation between grouting plumpness and flow time was 0.65. Therefore, flow diameter should be first selected to measure the flow performance of FC. Furthermore, it was found that flow diameter should be higher than 230 mm to ensure that the average grouting plumpness of FC was above 80%. The results of this study provide a reliable basis for evaluating the flow performance of FC for filling cracks in the base layer of asphalt pavement. Full article
(This article belongs to the Special Issue Innovative Applications of Fiber-Reinforced Concrete and Composites for Structural Reinforcement)
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21 pages, 7087 KB  
Article
Numerical Investigation on Cyclic Behavior of FRP-Reinforced SFRC Composite Walls Considering Bond-Slip Mechanism
by Mingyuan Liu, Jun Tian, Jianwen Liang, Yuping Sun and Ziran Quan
Buildings 2026, 16(4), 759; https://doi.org/10.3390/buildings16040759 - 12 Feb 2026
Viewed by 485
Abstract
To investigate the cyclic behavior of FRP-reinforced steel fiber reinforced concrete (SFRC) composite walls, this paper proposes a section-based finite spring calculation method (FSCM) to reliably predict the cyclic response of such walls under seismic loads. The proposed model accounts for the bond-slip [...] Read more.
To investigate the cyclic behavior of FRP-reinforced steel fiber reinforced concrete (SFRC) composite walls, this paper proposes a section-based finite spring calculation method (FSCM) to reliably predict the cyclic response of such walls under seismic loads. The proposed model accounts for the bond-slip effect of FRP bars and the confining action of transverse reinforcement in the boundary elements. Numerical calculations were conducted on six composite wall specimens with varying longitudinal bar types, fiber volume fractions, concrete strengths, and axial compression ratios. The results indicate that the established calculation method efficiently characterizes the “pinching” effect induced by the linear-elastic properties of FRP bars, and the obtained hysteretic curves are in good agreement with experimental data. Furthermore, the model accurately predicts the load-bearing capacity and residual displacements of the FRP-reinforced SFRC composite walls. Specifically, the average error of peak load calculation for all specimens ranges from −3.36% to 7.36%, and the predicted residual displacements correlate well with the experimental data. These findings demonstrate the applicability of the proposed model for key seismic performance indicators and provide a reliable basis for the research and engineering application of FRP-reinforced SFRC composite walls. Full article
(This article belongs to the Special Issue Innovative Applications of Fiber-Reinforced Concrete and Composites for Structural Reinforcement)
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