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Polymers
Special Issues
Properties and Applications of Fiber-Reinforced Polymer Concrete: Designs, Tests and...
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Properties and Applications of Fiber-Reinforced Polymer Concrete: Designs, Tests and Analysis

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

Deadline for manuscript submissions: closed (15 March 2024) | Viewed by 3191

Special Issue Editors

Dr. Xi Liu

E-Mail Website
Guest Editor
Institute of Civil Engineering, Chang’an University, Xi’an 710061, China
Interests: fiber reinforced concrete (FRC); lightweight aggregate concrete (LWAC); geopolymer concrete (GPC); reinforced concrete (RC) structures; precast concrete structures; shear and bending capacity; Bayesian theory; the Markov chain Monte Carlo method
Dr. Yanxia Ye

E-Mail Website
Guest Editor
Institute of Civil Engineering, Chang’an University, Xi’an 710061, China
Interests: fiber reinforced concrete (FRC); fiber-reinforced polymer; filler wall; precast concrete structures; frame structures; composite structures; seismic performance; dynamic property
Prof. Dr. Hua Huang

E-Mail Website
Guest Editor
School of Civil & Architecture Engineering, Xi’an Technological University, Xi'an 710021, China
Interests: fiber reinforced concrete (FRC); polymer mortar; geopolymer concrete; repair; bonding properties; FRP bar; seismic performance; frame structures; finite element analysis; shear

Special Issue Information

Dear Colleagues,

Investigations into fiber-reinforced polymer concrete have increased over the past year. Various efforts have been concentrated on enhancing its mechanical properties and durability, including flexural and compressive strength, toughness, ductility, impact resistance, and resistance to cracking, shrinkage, and environmental degradation. Fiber-reinforced polymer concrete was used as a composite material to replace, or be combined with, traditional materials, such as concrete, brick, and asphalt. The feasibility, effectiveness, and economic viability of its application in different fields have been confirmed. The purpose of researching fiber-reinforced polymer concrete is to promote the development of sustainable and resilient infrastructure that can withstand the challenges presented by a changing environment and society. It provides a promising solution for improving the performance and durability of structures and reducing building carbon emissions. In conclusion, fiber-reinforced polymer concrete is expected to play a crucial role in the future of construction and engineering.

This Special Issue aims to showcase and explore the latest research achievements, engineering applications, and development trends in the field of fiber-reinforced polymer concrete composite building materials, promote the development of research and application technologies in this field, and enhance cross-disciplinary collaboration among scholars in the field of fiber composite building materials.

Dr. Xi Liu
Dr. Yanxia Ye
Prof. Dr. Hua Huang
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

  • polymer concrete
  • fiber-reinforced concrete
  • polymer modification
  • fiber reinforcement
  • hybrid fiber
  • mechanical properties
  • bond behavior
  • experimental study
  • numerical modeling
  • microstructure

Published Papers (2 papers)

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Research

20 pages, 10465 KiB  
Article
Mechanical Properties and Microstructure of Polypropylene–Glass-Fiber-Reinforced Desert Sand Concrete
by Lina Hou, Baojun Wen, Wei Huang, Xue Zhang and Xinyu Zhang
Polymers 2023, 15(24), 4675; https://doi.org/10.3390/polym15244675 - 11 Dec 2023
Viewed by 853
Abstract
In order to improve the performance of desert sand concrete, polypropylene fiber (PF) and glass fiber (GF) were used to prepare desert sand concrete (DSC) with different fiber and volume content, and the basic mechanical properties, such as cube compressive, tensile and flexural [...] Read more.
In order to improve the performance of desert sand concrete, polypropylene fiber (PF) and glass fiber (GF) were used to prepare desert sand concrete (DSC) with different fiber and volume content, and the basic mechanical properties, such as cube compressive, tensile and flexural strengths, were tested and studied. Based on the mercury injection method (MIP) and scanning electron microscopy (SEM), the evolution of pore structure and interface structure was analyzed. The mechanism of fiber toughening was revealed at the microscopic level. The results show that the slump of DSC decreases with the increase in fiber content. The slump of glass-fiber-reinforced DSC (GFRDSC) is smaller than that of polypropylene-fiber-reinforced DSC (PFRDSC). The strength enhancement of DSC by fibers is in the order of flexural strength > split tensile strength > compressive strength. The flexural strength of hybrid-fiber-reinforced DSC (HyFRDSC) (0.1% PF + 0.1% GF) is increased by 40.7%. Meanwhile, fibers can improve the toughness of DSC. The MIP results show that the porosity of HyFRDSC decreased by 50.01%, and the addition of fiber can effectively refine the large pore size. The SEM results show that the incorporation of PF and GF causes the formation of a uniform and dense structure between the fibers, cement and aggregate. The two can give full play to the crack-resisting and toughening effect in different loading stages, thus improving the macromechanical properties of DSC. Full article
(This article belongs to the Special Issue Properties and Applications of Fiber-Reinforced Polymer Concrete: Designs, Tests and Analysis)
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19 pages, 8402 KiB  
Article
Study and Microanalysis on the Effect of the Addition of Polypropylene Fibres on the Bending Strength and Carbonization Resistance of Manufactured Sand Concrete
by Yan Tan, Chong Ma, Ben Zhao, Wei Xiong, Xingxiang Chen and Jiangtao Yu
Polymers 2023, 15(9), 2139; https://doi.org/10.3390/polym15092139 - 29 Apr 2023
Cited by 1 | Viewed by 1314
Abstract
To popularize the complete replacement of natural sand with manufactured sand, a study was performed to determine the effect of adding polypropylene fibres (PPFs) to increase the bending strength and carbonization resistance of manufactured sand concrete (MSC). A 2 × 3 factorial design [...] Read more.
To popularize the complete replacement of natural sand with manufactured sand, a study was performed to determine the effect of adding polypropylene fibres (PPFs) to increase the bending strength and carbonization resistance of manufactured sand concrete (MSC). A 2 × 3 factorial design with the content and length of PPF as variables was used to establish a carbonization depth prediction model and a response surface model (RSM). The phase composition and microstructure of polypropylene-fibre-reinforced manufactured sand concrete (PPF-MSC) were analysed using X-ray diffraction (XRD) and scanning electron microscopy (SEM). The results show the addition of PPF with different contents and lengths increases the bending strength of PPF-MSC to varying degrees, while reducing the carbonization depth and increasing the dynamic elastic modulus after 28 days of carbonization. The highest bending strength (6.12 MPa) and carbonization resistance of PPF-MSC are obtained by the addition of 1 kg/m3 of 12 mm PPF, while the carbonization depth and an increase in the dynamic elastic modulus after 28 days of carbonization are maintained at a minimum of 2.26% and 1.94 mm, respectively. A prediction model was established to obtain a formula for the PPF-MSC carbonization depth in terms of the content and length of PPF and the carbonization time. The following results were obtained from the RSM: compared to the PPF length, the PPF content has a larger impact on the PPF-MSC bending strength and a smaller impact on the PPF-MSC carbonization resistance; there is no significant interaction between the content and length of PPF; and the predicted and measured values are close, indicating that the model is highly reliable. A comparison of the XRD patterns and SEM micrographs of PPF-MSC and MSC after 28 days of carbonization show a lower peak intensity of CaCO3 in the pattern for the carbonized area for PPF-MSC than for MSC and considerably fewer surface pores and cracks in PPF-MSC than in MSC. These results indicate that the addition of PPF increases the compactness of MSC and creates an effective resistance to the erosion by water molecules and carbon dioxide (CO2), thus enhancing the bending strength and carbonization resistance of MSC. Full article
(This article belongs to the Special Issue Properties and Applications of Fiber-Reinforced Polymer Concrete: Designs, Tests and Analysis)
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