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Buildings
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Fibre-Reinforced Polymer Composites in Civil Engineering
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Fibre-Reinforced Polymer Composites in Civil Engineering

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

Deadline for manuscript submissions: closed (30 November 2023) | Viewed by 2490

Special Issue Editors

Dr. Dhanasingh Sivalinga Vijayan

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Guest Editor
Vinayaka Mission's Research Foundation (VMRF), Aarupadai Veedu Institute of Technology (AVIT), Chennai 603104, India
Interests: fiber reinforced polymer composites; 3D printing; structural health monitoring; advanced building materials; machine learning; complex concrete structures; prestressed concrete; repair and rehabilitation of structures
Prof. Dr. J. Revathy

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Guest Editor
B.S. Abdur Rahman Crescent Institute of Science and Technology, Chennai 603104, India
Interests: fibre reinforced polymer and concrete composites; nanotechnology in concrete; forensic engineering and innovative building materials & technology
Dr. R. Nirmala

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Guest Editor
Department of Civil Engineering, School of Building and Environment, Sathyabama Institute of Science and Technology, Chennai 603104, India
Interests: FRP composites; eco-friendly building materials; concrete technology

Special Issue Information

Dear Colleagues,

The retrofitting of civil engineering structures is essential for the creation of a sustainable built environment. Structural engineers are challenged with assessing the vulnerability of deteriorated or damaged structures and deciding on the appropriate retrofit methods. Fibre-reinforced polymer (FRP), a non-metallic composite, is considered a novel and promising material and an alternative to traditional materials. FRP is a promising and prospective technology for the restoration and retrofitting of structures of any material, viz., concrete, steel, masonry, and wood. FRP is best suited to new construction and, indeed, primarily to upgrading and extending the life span of civil engineering structures. It offers light-weight, excellent mechanical properties, corrosion resistance, durability, ease of application, reduced construction time, efficiency and low life cycle cost. An economic application of FRP materials is in the form of composite construction with other materials, such that FRP could act as a load-carrying partner and protective measure for the structural members. FRP would also contribute to the development of modern buildings.

For this Special Issue, entitled "Fibre-Reinforced Polymer Composites in Civil Engineering", authors are invited to submit high-quality research or review articles on the topics including,  but not limited to:

  • Fibre-reinforced polymer (FRP) composites for structural applications;
  • (FRP) composites for building blast protection;
  • Buildings, bridges, pipelines, and other civil infrastructures made of (FRP) composite;
  • Analysis of the growth of fatigue cracks in (FRP) composites;
  • Retrofitting, repairing, and strengthening structural elements with (FRP) composites;
  • Non-destructive evaluation of structural elements made with (FRP) composites;
  • Finite element analysis, artificial neural networks, and other machine learning techniques for FRP composite civil engineering materials;
  • Using FRP composites to strengthen structures subjected to seismic damage;
  • Recent advancements, practical challenges, emerging techniques, health monitoring, and other advanced techniques recently adopted in civil engineering using FRP composites.

Dr. Dhanasingh Sivalinga Vijayan
Prof. Dr. J. Revathy
Dr. R. Nirmala
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 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 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

  • repair and rehabilitation
  • strengthening structural elements
  • sustainable construction
  • fibre-reinforced polymer
  • durability, stiffness, tensile behaviour
  • machine learning, artificial intelligence, 3D printing
  • blast protection
  • complex concrete structures
  • fatigue loading and crack
  • non-destructive tests

Published Papers (2 papers)

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Research

26 pages, 12984 KiB  
Article
Practical Investigation on the Strengthening of the Built-Up Steel Main Girder of a Metro Station with Carbon-Fiber-Reinforced Polymer on the Inside Part of the Tensioned Flange
by Mohamed A. M. A. Mahmoud, Phan Viet Nhut and Yukihiro Matsumoto
Buildings 2023, 13(7), 1753; https://doi.org/10.3390/buildings13071753 - 10 Jul 2023
Cited by 1 | Viewed by 874
Abstract
This study investigates the effectiveness of a carbon-fiber-reinforced polymer (CFRP) in enhancing the load-carrying capacity of a steel main girder in a metro station. The objective is to evaluate the applicability of CFRPs in sustaining increases in applied loads and assessing their effectiveness [...] Read more.
This study investigates the effectiveness of a carbon-fiber-reinforced polymer (CFRP) in enhancing the load-carrying capacity of a steel main girder in a metro station. The objective is to evaluate the applicability of CFRPs in sustaining increases in applied loads and assessing their effectiveness on curved surfaces. Finite element analysis (FEA) identified the most stressed areas of the girder under design loads. Based on the FEA results, a targeted strengthening procedure using CFRP sheets was proposed. Various arrangements of CFRP sheets were tested, including different orientations and thicknesses up to 60% of the girder’s flange thickness. To validate the FEA accuracy, two small-scale specimen beams were prepared and tested in the laboratory. One beam was strengthened with CFRP sheets on the tension part of the inner flange side, similar to the suggested strengthening method for the girder. The FEA results show that the CFRP increases stresses by an average of 8% to 10% for the steel main girder, with strengthening effects up to 19% at the center of the CFRP strengthening positions, differing from a regular straight flange shape. Significantly reducing stresses required a total CFRP layer thickness of at least 50% of the flange’s total thickness. Applying a CFRP on the inner face of the girder preserves its usability without the need for openings in finishes or the metal deck surface. The findings highlight CFRP’s potential to enhance load-carrying capacity on curved surfaces and sustain increased applied loads, offering a promising solution for strengthening infrastructure and similar applications. Full article
(This article belongs to the Special Issue Fibre-Reinforced Polymer Composites in Civil Engineering)
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20 pages, 16899 KiB  
Article
Dynamic Mechanical Strength Prediction of BFRC Based on Stacking Ensemble Learning and Genetic Algorithm Optimization
by Jiayan Zheng, Minghui Wang, Tianchen Yao, Yichen Tang and Haijing Liu
Buildings 2023, 13(5), 1155; https://doi.org/10.3390/buildings13051155 - 27 Apr 2023
Cited by 4 | Viewed by 1172
Abstract
Split Hopkinson pressure bar (SHPB) tests are usually used to determine the dynamic mechanical strength of basalt-fiber-reinforced concrete (BFRC), but this test method is time-consuming and expensive. This paper makes predictions about the dynamic mechanical strength of BFRC by employing machine learning (ML) [...] Read more.
Split Hopkinson pressure bar (SHPB) tests are usually used to determine the dynamic mechanical strength of basalt-fiber-reinforced concrete (BFRC), but this test method is time-consuming and expensive. This paper makes predictions about the dynamic mechanical strength of BFRC by employing machine learning (ML) algorithms and feature sets drawn from experimental data from prior works. However, there is still the problem of improving the accuracy of the dynamic mechanical strength prediction by the BFRC, which remains a challenge. Using stacking ensemble learning and genetic algorithms (GA) to optimize parameters, this study proposes a prediction method that combines these two techniques for obtaining accurate predictions. This method is composed of three parts: (1) the training uses multiple base learners, and the algorithms employed by the learners include extreme gradient boosting (XGBoost), gradient boosting (GB), random forest (RF), and support vector regression (SVR); (2) multi-base learners are combined using a stacking strategy to obtain the final prediction; and (3) using GA, the parameters are optimized in the prediction model. An experiment was conducted to compare the proposed approach with popular techniques for machine learning. In the study, the stacking ensemble algorithm integrated the base learner prediction results to improve the model’s performance and the GA further improved prediction accuracy. As a result of the application of the method, the dynamic mechanical strength of BFRC can be predicted with high accuracy. A SHAP analysis was also conducted using the stacking model to determine how important the contributing properties are and the sensitivity of the stacking model. Based on the results of this study, it was found that in the SHPB test, the strain rate had the most significant influence on the DIF, followed by the specimen diameter and the compressive strength. Full article
(This article belongs to the Special Issue Fibre-Reinforced Polymer Composites in Civil Engineering)
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