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Buildings
Special Issues
Optimal Design of FRP Strengthened/Reinforced Construction Materials
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Optimal Design of FRP Strengthened/Reinforced Construction Materials

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

Deadline for manuscript submissions: 10 June 2025 | Viewed by 3628

Special Issue Editors

Dr. Kaiqi Zheng

E-Mail Website
Guest Editor
College of Civil Engineering, Nanjing Forestry University, Nanjing 210037, China
Interests: FRP confined concrete; FRP bridge structures; FRP–bamboo/wood composite structures
Prof. Dr. Pu Zhang

E-Mail Website
Guest Editor
College of Civil Engineering, Zhengzhou University, Zhengzhou 450001, China
Interests: FRP bar reinforced concrete structures; FRP-UHPC composite structures; fiber reinforced concrete
Special Issues, Collections and Topics in MDPI journals
Dr. Haitao Wang

E-Mail Website
Guest Editor
College of Civil and Transportation Engineering, Hohai University, Nanjing 210098, China
Interests: structural strengthening with FRP; prestressing FRPs for reinforcement and strengthening; FRP–concrete composite structures
Special Issues, Collections and Topics in MDPI journals
Dr. Yirui Zhang

E-Mail Website
Guest Editor
College of Civil Engineering, Nanjing Forestry University, Nanjing 210037, China
Interests: marine structures; FRP confined concrete; FRP repairing or retrofitting; durability of FRP materials

Special Issue Information

Dear Colleagues,

This century has witnessed the widespread application of Fiber Reinforced Polymer (FRP) composites in infrastructure. FRP composites have been developed into various products in recent decades due to their excellent corrosion resistance, designability, and high strength-to-weight ratio. FRP materials shine brightly in improving the structural behavior of existing structures and new structures. Combining them with traditional structures involves contact issues and collaborative work between different materials. In order to safely and reasonably use FRP composite materials to strengthen/reinforce structures, it is necessary to develop effective technologies and accurate analytical theories to evaluate the mechanical properties and design methods of all kinds of structures combined with FRP composites.

This Special Issue aims to introduce the latest research progress and technological innovation of FRP-strengthened construction materials, and focuses on material innovations in FRPs, structural analysis, and novel reinforcement design methods. Research from experimental analyses and numerical simulations of strengthened structures is also welcomed, as well as the maintenance and renovation of existing structures. Topics of interest include, but are not limited to, the following:

  • Properties of various FRP products;
  • Bonding between FRPs and substrates (e.g., concrete/metal/wood/bamboo/masonry);
  • Anchoring FRP materials (laminate, bar, cable, strand, etc.);
  • Mechanical properties and durability of FRP-strengthened structures (e.g., concrete/ metal/wood/ bamboo/masonry structures);
  • FRP bar reinforced concrete structures, FRP tube confined structures, and prestressed FRP-strengthened/reinforced structures;
  • Novel composite structures of FRPs and other construction materials (e.g., concrete/ metal/wood/ bamboo);
  • Experimental analyses and numerical simulations;
  • Novel design methods;
  • Case studies on the application of FRPs in engineering structures;

We look forward to receiving your contributions.

Dr. Kaiqi Zheng
Prof. Dr. Pu Zhang
Dr. Haitao Wang
Dr. Yirui Zhang
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. 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

  • composite structures
  • FRP profiles/bars/sheets, etc.
  • analytical and design method
  • prestressing and anchoring FRP
  • novel FRP composites
  • FRP-reinforced structures

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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

23 pages, 12221 KiB  
Article
Experimental Study on Axial Compression Behavior of Molybdenum Tailings Concrete Column Confined by GFRP
by Jian Yuan, Xin Zhao, Lianmin Tian, Zhaolong Hou, Yunfeng Pan and Jun He
Buildings 2024, 14(12), 3779; https://doi.org/10.3390/buildings14123779 - 26 Nov 2024
Cited by 1 | Viewed by 564
Abstract
To promote the application of molybdenum tailings as the fine aggregate in concrete in construction engineering and verify the feasibility of fiber-reinforced polymer (FRP) material for strengthening molybdenum tailings concrete columns, this study takes a short circular molybdenum tailings concrete column reinforced by [...] Read more.
To promote the application of molybdenum tailings as the fine aggregate in concrete in construction engineering and verify the feasibility of fiber-reinforced polymer (FRP) material for strengthening molybdenum tailings concrete columns, this study takes a short circular molybdenum tailings concrete column reinforced by glass FRP (GFRP) as the research object. The influences of the molybdenum tailings content (0%, 25%, 50%, 75%, and 100%), the concrete grade (C30, C40, and C50), and the layer number (0, 1, and 2) of the GFRP sheet on the axial compressive capacity of the molybdenum tailings concrete column are investigated. The experimental phenomena and failure modes of the unreinforced and GFRP-reinforced columns are analyzed. The axial compressive strengths of the unreinforced and GFRP-reinforced columns are then compared. The load–strain curve and load–displacement curve of typical molybdenum tailings concrete columns are presented. Subsequently, six classical strength models for FRP-reinforced concrete are used to calculate the axial compressive strength of the confined specimens. The results show that the best classical model has a predictive accuracy with an absolute relative deviation (ARD) of 8.5%. To provide a better prediction of the compressive strength of the GFRP-reinforced molybdenum tailings concrete column, the best classical model is further improved, and the ARD of the modified model is only 5.87%. Full article
(This article belongs to the Special Issue Optimal Design of FRP Strengthened/Reinforced Construction Materials)
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23 pages, 5991 KiB  
Article
Study on Error Influence Analysis of an Annular Cable Bearing-Grid Structure
by Jingshuo Xu, Mingmin Ding, Yu Lin, Yang Wei and Zhenliang Hua
Buildings 2024, 14(12), 3750; https://doi.org/10.3390/buildings14123750 - 25 Nov 2024
Viewed by 586
Abstract
Manufacturing errors of cable length, external node coordinates and tension force by the passive tension method are inevitable, which will inevitably affect the prestressing of cable bearing-grid structures, while existing studies lack the error analysis of error influences in this area. This paper [...] Read more.
Manufacturing errors of cable length, external node coordinates and tension force by the passive tension method are inevitable, which will inevitably affect the prestressing of cable bearing-grid structures, while existing studies lack the error analysis of error influences in this area. This paper proposes a method for analyzing random errors in constructing annular cable bearing-grid structures. An error control index and a normal distribution-based random error model, considering the impact of cable and ring beam length errors on cable force, were established afterwards. Taking the roof of the Qatar Education City Stadium as an example, the influence of the length errors of the radial cable, ring cable, and outer pressure ring beam on the structural cable force and stress level was analyzed, and the coupling error effect analysis was carried out. The results show that ring cable force and radial cable force are less affected by the length error of each other’s cables, while they are more affected by the length error of the outer ring beam. Stress levels exhibit greater sensitivity to outer ring beam errors compared to cable length errors. As the error limits of outer ring beam increase, radial and ring cable error ratios and outer ring beam stress errors also rise. Full article
(This article belongs to the Special Issue Optimal Design of FRP Strengthened/Reinforced Construction Materials)
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19 pages, 7057 KiB  
Article
Finite Element Modeling and Artificial Neural Network Analyses on the Flexural Capacity of Concrete T-Beams Reinforced with Prestressed Carbon Fiber Reinforced Polymer Strands and Non-Prestressed Steel Rebars
by Hai-Tao Wang, Xian-Jie Liu, Jie Bai, Yan Yang, Guo-Wen Xu and Min-Sheng Chen
Buildings 2024, 14(11), 3592; https://doi.org/10.3390/buildings14113592 - 12 Nov 2024
Viewed by 950
Abstract
The use of carbon fiber reinforced polymer (CFRP) strands as prestressed reinforcement in prestressed concrete (PC) structures offers an effective solution to the corrosion issues associated with prestressed steel strands. In this study, the flexural behavior of PC beams reinforced with prestressed CFRP [...] Read more.
The use of carbon fiber reinforced polymer (CFRP) strands as prestressed reinforcement in prestressed concrete (PC) structures offers an effective solution to the corrosion issues associated with prestressed steel strands. In this study, the flexural behavior of PC beams reinforced with prestressed CFRP strands and non-prestressed steel rebars was investigated using finite element modeling (FEM) and artificial neural network (ANN) methods. First, three-dimensional nonlinear FE models were developed. The FE results indicated that the predicted failure mode, load-deflection curve, and ultimate load agreed well with the previous test results. Variations in prestress level, concrete strength, and steel reinforcement ratio shifted the failure mode from concrete crushing to CFRP strand fracture. While the ultimate load generally increased with a higher prestressed level, an excessively high prestress level reduced the ultimate load due to premature fracture of CFRP strands. An increase in concrete strength and steel reinforcement ratio also contributed to a rise in the ultimate load. Subsequently, the verified FE models were utilized to create a database for training the back propagation ANN (BP-ANN) model. The ultimate moments of the experimental specimens were predicted using the trained model. The results showed the correlation coefficients for both the training and test datasets were approximately 0.99, and the maximum error between the predicted and test ultimate moments was around 8%, demonstrating that the BP-ANN method is an effective tool for accurately predicting the ultimate capacity of this type of PC beam. Full article
(This article belongs to the Special Issue Optimal Design of FRP Strengthened/Reinforced Construction Materials)
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17 pages, 2344 KiB  
Article
Numerical and Theoretical Study on Flexural Performance and Reasonable Structural Parameters of New Steel Grating–UHPFRC Composite Bridge Deck in Negative Moment Zone
by Jianyong Ma, Haoyun Yuan, Jiahao Zhang and Zuolong Luo
Buildings 2024, 14(9), 2857; https://doi.org/10.3390/buildings14092857 - 10 Sep 2024
Viewed by 910
Abstract
As the bridge’s structural component is directly subjected to vehicle loads, the stress performance of the bridge deck has a significant impact on the safety, durability, and driving comfort of the bridge. In order to improve the bending performance of the bridge deck [...] Read more.
As the bridge’s structural component is directly subjected to vehicle loads, the stress performance of the bridge deck has a significant impact on the safety, durability, and driving comfort of the bridge. In order to improve the bending performance of the bridge deck in the negative moment zone, a new type of steel grating–UHPFRC composite bridge deck was proposed in this paper. Firstly, structural details and advantages of the new steel grating-UHPFRC composite bridge deck were introduced. Secondly, the finite element program ABAQUS was used to establish a refined solid finite element model of the new bridge deck. The mathematical program MATLAB (PYTHON) was also used to analyze the effects of the structural parameters on bending bearing capacity and put forward reasonable structural parameters of the new bridge deck, considering the technical and economic indexes. Thirdly, the simplified plasticity theory was applied to analyze the bending bearing capacity of the new bridge deck, and the corresponding formula for bending bearing capacity calculation was derived and verified by numerical model results. In addition, the cost–benefit analysis and environmental impact assessment of the new bridge deck were also conducted. The results show that the bending bearing capacity of the new bridge deck in the negative moment zone increases with the increase of the width of the bridge deck, the thickness of the wing plate, and the height of the web plate, with a trend of increasing and then decreasing when the horizontal inclination of the web plate decreases. The bridge deck width does not have a significant effect on improving the bearing capacity. The bearing capacity calculated by theoretical formulas is close to that calculated by numerical models and the maximum relative deviation is 9.1%. The new steel grating-UHPFRC composite bridge deck proposed in this paper is superior to conventional steel-UHPC composite bridge deck in terms of cost-benefit and environmental impact. Full article
(This article belongs to the Special Issue Optimal Design of FRP Strengthened/Reinforced Construction Materials)
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