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Polymers
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Advances in Fiber-Reinforced Polymer Concrete
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Advances in Fiber-Reinforced Polymer Concrete

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

Deadline for manuscript submissions: closed (30 August 2023) | Viewed by 15139

Special Issue Editors

Dr. Xuanyi Xue

E-Mail Website
Guest Editor
School of Civil Engineering, Chongqing University, Chongqing 400044, China
Interests: fiber-reinforced polymer; mechanical property; structural analysis
Dr. Zengshun Chen

E-Mail Website
Guest Editor
School of Civil Engineering, Chongqing University, Chongqing 400044, China
Interests: high-performance concrete; structural analysis; intelligent detection
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Jianmin Hua

E-Mail Website
Guest Editor
School of Civil Engineering, Chongqing University, Chongqing 400044, China
Interests: high-performance steel; mechanical property; anticorrosion construction
Dr. Neng Wang

E-Mail Website
Guest Editor
School of Management Science and Real Estate, Chongqing University, Chongqing 440044, China
Interests: steel reinforcement; corrosion; lap splice; durability; lifecycle cost

Special Issue Information

Dear Colleagues,

Fiber-reinforced polymers are lightweight and exhibit high strength, which is why they are widely used in concrete. Because of the strengthening effects of fiber-reinforced polymer, fiber-reinforced polymer concrete could achieve advanced mechanical and energy dissipation properties. In this Special Issue, the most interesting results in this area are encouraged, and a wide range of topics will be considered. We especially welcome articles considering any of the following: basic properties of new fiber-reinforced polymers, connection performance between concrete and fiber-reinforced polymer, mechanical properties and durability of fiber-reinforced polymer concrete, response of fiber-reinforced polymer concrete components and structure under extreme load, life cycle cost analysis of fiber-reinforced polymer concrete structures, and application of fiber-reinforced polymer concrete in the repair of existing structures.

Dr. Xuanyi Xue
Dr. Zengshun Chen
Prof. Dr. Jianmin Hua
Dr. Neng Wang
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

  • mechanical property
  • durability
  • life cycle cost
  • basalt fiber-reinforced polymer
  • structural repair

Published Papers (6 papers)

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Research

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18 pages, 7148 KiB  
Article
Case Study on Prestressed CFRP Plates Applied for Strengthening Hollow-Section Beam Removed from an Old Bridge
by Guirong Liu, Bingchen Li, Jiasheng Bao, Shengzhao Cheng, Qingxin Meng and Shunbo Zhao
Polymers 2023, 15(3), 549; https://doi.org/10.3390/polym15030549 - 20 Jan 2023
Cited by 2 | Viewed by 1198
Abstract
With the wide application of carbon fiber reinforced polymer (CFRP) plate, used for strengthening existed concrete structures, the prestressing technology of CFRP plate is becoming a hot topic, in order to sufficiently develop its high-strength peculiarity. In this paper, a full-scale hollow-section beam [...] Read more.
With the wide application of carbon fiber reinforced polymer (CFRP) plate, used for strengthening existed concrete structures, the prestressing technology of CFRP plate is becoming a hot topic, in order to sufficiently develop its high-strength peculiarity. In this paper, a full-scale hollow-section beam with length of 16 m taken from an old bridge which was in service for about 20 years was first examined for existed cracks and repaired by filling epoxy adhesive, and then the beam was strengthened with prestressed CFRP plates. The CFRP plates were tensioned and fixed with flat-plate anchorages at ends and bonded with adhesive on the bottom surface of the beam. The strengthened beam was experimentally studied using a four-point test to measure the concrete strain along the height of the mid-span section and the mid-span deflection. The finite element model of the strengthened beam was verified by the comparison of test results and used for an extending study of parametric analysis considering the effect of the length and amount of CFRP plates. Results indicated that with an increase in the length and amount of CFRP plates, the mid-span deflection of the beam decreases with the increased cracking resistance and bearing capacity, while the ultimate failure mode transfers from the under-reinforcement to the over-reinforcement. Full article
(This article belongs to the Special Issue Advances in Fiber-Reinforced Polymer Concrete)
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28 pages, 14269 KiB  
Article
Effects of Polyoxymethylene Fiber on Fresh and Hardened Properties of Seawater Sea-Sand Concrete
by Xuanyi Xue, Fei Wang, Jianmin Hua, Neng Wang, Lepeng Huang, Zengshun Chen and Yunhang Yao
Polymers 2022, 14(22), 4969; https://doi.org/10.3390/polym14224969 - 16 Nov 2022
Cited by 9 | Viewed by 1246
Abstract
Seawater and sea sand are used in concrete to reduce the consumption of freshwater and river sand. To improve the mechanical properties and cracking resistance of concrete, polymer fiber is commonly used. In this study, polyoxymethylene (POM) fiber was innovatively applied to seawater [...] Read more.
Seawater and sea sand are used in concrete to reduce the consumption of freshwater and river sand. To improve the mechanical properties and cracking resistance of concrete, polymer fiber is commonly used. In this study, polyoxymethylene (POM) fiber was innovatively applied to seawater sea-sand concrete (SWSSC), and the workability, early-age cracking behavior, and mechanical properties of SWSSC reinforced with POM fiber were investigated experimentally. A total of 6 kinds of SWSSC mixtures and 72 specimens were included. The test results indicated that with increases in fiber volume fractions (ρ), the workability of SWSSC decreased correspondingly. Compared with plain SWSSC, for SWSSC with ρ = 1%, the decreases in slump and expansibility were 110.6 and 91.9 mm, respectively. POM fiber had a significant enhancing effect on the early-age cracking resistance of SWSSC. Compared with those of plain SWSSC, the cracking indices ac, bc, and cc of the POM-1 specimen decreased by 77.0%, 89.4%, and 97.6%, respectively. Cube and axial compressive tests, splitting tensile tests, and flexural tests were conducted to clarify the effects of POM fiber on the mechanical properties of SWSSC. Compared with plain SWSSC, SWSSC with POM fiber performed better in terms of mechanical properties. Predictive equations were proposed to quantify the effects of POM fiber on the mechanical properties of SWSSC. The failure performances of the SWSSC specimens were discussed and their complete stress–strain curve was analyzed. A stress–strain model for SWSSC was suggested. According to the model, the complete stress–strain curve of SWSSC with any POM fiber content could be determined. Full article
(This article belongs to the Special Issue Advances in Fiber-Reinforced Polymer Concrete)
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14 pages, 2918 KiB  
Article
Axial Compression Property Test of GFRP Tube-Confined Coal Gangue Steel Fiber Short Concrete Column
by Shengyong Xia, Haiqing Liu, Guosheng Fu, Jinyang Zhang, Ming Lei and Zimu Chen
Polymers 2022, 14(21), 4528; https://doi.org/10.3390/polym14214528 - 26 Oct 2022
Cited by 1 | Viewed by 1177
Abstract
In order to study the axial compression property of a GFRP (glass fiber-reinforced polymer) tube-confined coal gangue steel fiber short concrete column, a test was carried out. The whole process of deformation and failure of the specimen under axial compression load was observed, [...] Read more.
In order to study the axial compression property of a GFRP (glass fiber-reinforced polymer) tube-confined coal gangue steel fiber short concrete column, a test was carried out. The whole process of deformation and failure of the specimen under axial compression load was observed, and the whole process of the stress–strain curve of the specimen was obtained. The results show that the thickness of the GFRP tube has the most significant effect on the mechanical properties. The thickness of the 7 mm tube is 4.3 times the axial ultimate stress and 21.5 times the ultimate strain of the unconstrained short column. Under a certain volume fraction, the ultimate axial strain of the wave fiber is 10.1% higher than that of the hook fiber short column, and the ductility coefficient is 9.6% higher. The fiber volume fraction significantly increases the strain of the short column, and the 3% fiber content is 50.1% higher than that of the non-fiber short column. Finally, three classical strength models of confined concrete were selected for comparative calculation, and a new stress correction model was proposed. Full article
(This article belongs to the Special Issue Advances in Fiber-Reinforced Polymer Concrete)
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19 pages, 10240 KiB  
Article
Seismic Performance and Engineering Application Investigation of a New Alternative Retainer
by Lei Yan, Guo Li, Xiaoying Gou, Ping Zhang, Xinyong Wang and Yu Jiang
Polymers 2022, 14(17), 3506; https://doi.org/10.3390/polym14173506 - 26 Aug 2022
Cited by 1 | Viewed by 1226
Abstract
Focusing on the dilemma that the traditional lateral shear keys are ineffectual in limiting the displacement and repair of small-to-medium spanning highway bridges, this paper briefly describes the necessity of considering fiber-reinforced polymer concrete with the shear keys design, and studies the seismic [...] Read more.
Focusing on the dilemma that the traditional lateral shear keys are ineffectual in limiting the displacement and repair of small-to-medium spanning highway bridges, this paper briefly describes the necessity of considering fiber-reinforced polymer concrete with the shear keys design, and studies the seismic performance of an alternative retainer that focuses on three functions of “limiting displacement”, “energy consumption”, and “alternative link”. In order to study the anti-seismic effectiveness under the seismic loads, four alternative retainer specimens with different sizes were designed. The quasi-static tests were carried out on four specimens, respectively. The seismic damage mode of the quasi-static alternative retainer was investigated. We examined the influence of the designed parameter of the alternative retainer on the anti-seismic effectiveness of the alternative retainer. Taking a two-span simply supported girder bridge, for example, the comparison between the seismic response of the bridge with retainers and without is analyzed based on a consideration of the sliding plate rubber bearings and the test results of the new retainers. The results show that the failure mode of the new alternative retainers is a two-stage process involving the alternative links: firstly shear failure and then the overall retainer damages, which is convenient to retrofit and reinforce post-earthquake. The thickness of the web of the alternative link, as a sensitive factor, influences the bearing capacity of the new retainers, yield displacement, ultimate displacement, ductility coefficient and overall energy consumption. The height of the alternative link will merely influence the ultimate bearing capacity, and transverse replacement of the main girder with the new alternative retainers is greatly reduced compared to without retainers, and the seismic response increase in the pier is gentle. Full article
(This article belongs to the Special Issue Advances in Fiber-Reinforced Polymer Concrete)
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Review

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38 pages, 5302 KiB  
Review
Utilizing Polyethylene Terephthalate PET in Concrete: A Review
by Mand Kamal Askar, Yaman S. S. Al-Kamaki and Ali Hassan
Polymers 2023, 15(15), 3320; https://doi.org/10.3390/polym15153320 - 07 Aug 2023
Cited by 6 | Viewed by 6657
Abstract
In general, plastic waste has been growing remarkably. Numerous waste plastic products are generated by manufacturing processes, service industries, and municipal solid waste (MSW). The increase in plastic waste increases concern about the environment and how to dispose of the generated waste. Thus, [...] Read more.
In general, plastic waste has been growing remarkably. Numerous waste plastic products are generated by manufacturing processes, service industries, and municipal solid waste (MSW). The increase in plastic waste increases concern about the environment and how to dispose of the generated waste. Thus, recycling plastic waste becomes an alternative technique to the disposal of plastic waste in a limited landfill. One of the solutions is to use plastic waste as recycled material in concrete construction to produce what is called green concrete. This research illustrates a summary of studies that utilized polyethylene terephthalate (PET) in concrete as a volume ratio or concrete aggregate replacement. It presents data with regard to mixing design and concrete behavior when PET is used. Moreover, using PET in concrete industries may reduce environmental pollution such as the emission of carbon dioxide and plastic waste disposal problems. Full article
(This article belongs to the Special Issue Advances in Fiber-Reinforced Polymer Concrete)
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28 pages, 14110 KiB  
Review
Anti-Corrosion Reinforcements Using Coating Technologies—A Review
by Lei Yan, Wenjie Deng, Neng Wang, Xuanyi Xue, Jianmin Hua and Zengshun Chen
Polymers 2022, 14(21), 4782; https://doi.org/10.3390/polym14214782 - 07 Nov 2022
Cited by 3 | Viewed by 2757
Abstract
Coated reinforcements are expected to improve the performance of reinforced concrete in aggressive environments, but different kinds of coated reinforcements can express a variety of properties, which can confuse researchers and engineers. This paper reviews the manufacture, corrosion mechanisms, behaviors, and applications of [...] Read more.
Coated reinforcements are expected to improve the performance of reinforced concrete in aggressive environments, but different kinds of coated reinforcements can express a variety of properties, which can confuse researchers and engineers. This paper reviews the manufacture, corrosion mechanisms, behaviors, and applications of popular or promising coated reinforcements, incorporating galvanized reinforcements (GRs), epoxy coated reinforcements (ECRs), stainless cladding reinforcements (SCRs), and steel-fiber reinforced polymer composite bars (SFCBs). In terms of manufacture, GRs and ECRs should focus on minimizing the negative effect of manufacture on performance, while SCRs and SFCBs should reduce the cost and increase the production capacity. Behaviors of GRs and ECRs are primarily determined by the steel substrate, but the behaviors of SCRs and SFCBs are primarily affected by the coat and core, and their interaction. The corrosion mechanism of GRs and SCRs is about oxidation, while that of SFCBs is about hydrolysis. ECRs are usually corroded under film, which can be a cause of premature failure. Corrosion embrittles SCRs, as well as bare bars, but corrosion of SFCBs usually causes a reduction in maximum strength. The investigation of the corrosion behaviors of GRs and ECRs focuses on bond strength. GRs have controversial performance. ECRs have been proven to have drawbacks regarding bond strength. The use of anti-corrosion reinforcement is uneven in regions, which may correlate with the development of technology and the economy. Full article
(This article belongs to the Special Issue Advances in Fiber-Reinforced Polymer Concrete)
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