Fiber Reinforced Inorganic-Based Composite Systems for Structural Applications

A special issue of Fibers (ISSN 2079-6439).

Deadline for manuscript submissions: closed (30 June 2022) | Viewed by 7458

Special Issue Editors


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Guest Editor
Dipartimento di Scienze e Ingegneria della Materia, dell’Ambiente ed Urbanistica, Università Politecnica delle Marche, 60132 Ancona, Italy
Interests: construction materials; concrete technologies; sustainable construction; recycling; waste materials; advanced cement-based composites

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Guest Editor
Department of Science and Engineering of Matter, Environment and Urban Planning, Polytechnic University of Marche, 60132 Ancona, Italy
Interests: fiber-reinforced cement-based materials; concrete and masonry structures; advanced composite materials; self-sensing cement-based materials; cementitious composite materials

Special Issue Information

Dear Colleagues,

Today, the construction industry is applying a new class of materials, which consists of fiber reinforced cementitious matrix (FRCM), textile reinforced concrete (TRC), and textile reinforced mortar (TRM), for structural applications, including the strengthening of existing masonry and concrete structures. The presence of the inorganic matrix allows these systems to be more compatible with different substrates, offers greater resistance to high temperature, and the possibility to be applied on wet surfaces.

This Special Issue aims to add evidence to the scientific progress achieved in the research and development of this class of composite materials for structural applications.

Topics of interest include the following:

  • Mechanical characterization of the composite material with the use of innovative techniques (such as digital image correlation)
  • The use of different reinforcement fabrics (made of natural fibers, hybrid fiber systems, coated fiber, etc.)
  • The use of nanotechnology to improve the bond at the fiber to matrix interface
  • Analytical and numerical methods for the modeling, simulation, and prediction of mechanical behavior
  • Durability studies
  • Analysis of the interface bond between the fabric and matrix
  • Exposure to fire or high-temperature environments
  • Mechanical tests on macro-scale elements (masonry or concrete elements)
  • Challenges in design and field applications

Prof. Valeria Corinaldesi
Dr. Jacopo Donnini
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. Fibers 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 2000 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.

Published Papers (2 papers)

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Research

18 pages, 6223 KiB  
Article
Evaluation of the Maximum Strain for Different Steel-FRCM Systems in RC Beams Strengthened in Flexure
by Francesco Bencardino and Mattia Nisticò
Fibers 2022, 10(8), 67; https://doi.org/10.3390/fib10080067 - 04 Aug 2022
Cited by 3 | Viewed by 1708
Abstract
The strengthening of existing reinforced concrete (RC) structures by means of steel-fabric reinforced cementitious matrix (Steel-FRCM) systems has been universally recognized in the academic literature as an effective method. Several types of steel fibres can be found in the marketplace, and they are [...] Read more.
The strengthening of existing reinforced concrete (RC) structures by means of steel-fabric reinforced cementitious matrix (Steel-FRCM) systems has been universally recognized in the academic literature as an effective method. Several types of steel fibres can be found in the marketplace, and they are classified according to mass per unit area and tensile strength. In the flexural strengthening design of RC beams, a fundamental parameter is the effective tensile strain level in the Steel-FRCM system attained at failure. Some authors and guidelines suggest evaluating this strain value using the results of bond tests. As is well highlighted in many works, the debonding strain in Steel-FRCM composites applied on concrete beams is usually higher than that from single-lap shear tests. At this point, it can be easily obtained by applying an appropriate amplification coefficient. This study experimentally investigates the difference in the debonding strain between Steel-FRCM composites bonded to concrete blocks in single-lap shear tests (end strain) versus the debonding strain in concrete beams (intermediate strain). The results were used to critically discuss the variability of the amplification coefficient, significantly affected by the mechanical and geometrical properties of the steel fibres. Moreover, a simple predictive formula to evaluate the intermediate strain debonding was used, and the results were compared with the experimental evidence. Finally, a large database of direct shear and flexural tests was used to confirm the experimental and theoretical data obtained herein. Full article
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10 pages, 5594 KiB  
Article
Damage Characterization of Nano-Interleaved CFRP under Static and Fatigue Loading
by Mohamad Fotouhi, Cristiano Fragassa, Sakineh Fotouhi, Hamed Saghafi and Giangiacomo Minak
Fibers 2019, 7(2), 13; https://doi.org/10.3390/fib7020013 - 28 Jan 2019
Cited by 8 | Viewed by 5163
Abstract
The use of high strength-to-weight ratio-laminated fiber-reinforced composites is emerging in engineering sectors such as aerospace, marine and automotive to improve productivity. Nevertheless, delamination between the layers is a limiting factor for the wider application of laminated composites, as it reduces the stiffness [...] Read more.
The use of high strength-to-weight ratio-laminated fiber-reinforced composites is emerging in engineering sectors such as aerospace, marine and automotive to improve productivity. Nevertheless, delamination between the layers is a limiting factor for the wider application of laminated composites, as it reduces the stiffness and strengths of the structure. Previous studies have proven that ply interface nanofibrous fiber reinforcement has an effective influence on delamination resistance of laminated composite materials. This paper aims to investigate the effect of nanofiber ply interface reinforcement on mode I properties and failure responses when being subjected to static and fatigue loadings. For this purpose, virgin and nanomodified woven laminates were subjected to Double Cantilever Beam (DCB) experiments. Static and fatigue tests were performed in accordance with standards and the Acoustic Emissions (AE) were acquired during these tests. The results showed not only a 130% increase of delamination toughness for nanomodified specimens in the case of static loads, but also a relevant crack growth resistance in the case of fatigue loads. In addition, the AE permitted to relate these improvements to the different failure mechanisms occurring. Full article
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