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Buildings
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High-Performance Reinforced Concrete Structures and Composites
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High-Performance Reinforced Concrete Structures and Composites

A special issue of Buildings (ISSN 2075-5309). This special issue belongs to the section "Building Structures".

Deadline for manuscript submissions: closed (29 February 2024) | Viewed by 3928

Special Issue Editors

Dr. Andrea Pranno

E-Mail Website
Guest Editor
Department of Civil Engineering, University of Calabria, 87036 Rende, CS, Italy
Interests: civil engineering materials; structural analysis and stability; numerical modeling; fracture mechanics; ultra-high-performance concrete (UHPC); composite materials
Dr. Umberto De Maio

E-Mail Website
Guest Editor
Department of Civil Engineering, University of Calabria, 87036 Rende, Italy
Interests: discrete-crack and cohesive models; micromechanical approaches; debonding failure analysis; FRP-plated RC structural members; crack width and spacing analysis in RC structures; advanced modeling of intralaminar (matrix cracking, fiber/matrix debonding) and interlaminar (delamination) failure mechanisms; damage identification analysis in concrete structures and reinforced structures with FRP sheets; stability analysis in composite materials at the microscopic and macroscopic scales; bandgap analysis in bioinspired composite materials

Special Issue Information

Dear Colleagues,

We are pleased to invite you to submit high-quality works about the numerical and experimental investigations of concrete-based and advanced composite materials whose mechanical properties are enhanced by the incorporation of nano- and/or micro-reinforcements in the form of fibers, particles, or fillers. The application of these materials in building structures provides remarkable mechanical improvements in terms of load-carrying capacity and fracture toughening, thus improving their durability and lifetime. 

This Special Issue will provide recent progress and latest findings related to various aspects of reinforced-concrete-based and composite materials employed to design innovative high-performance structures. To this end, we welcome interesting research papers dealing with, but not limited to, the following topics:

  • Innovative materials and mixture design;
  • Advanced reinforcing microstructures;
  • Nano and/or micro materials incorporation;
  • Mechanical characterization of cement-based and composite materials;
  • Fracture modeling in high-performance reinforced concrete structures;
  • Numerical investigations on the effect of nano and/or micro reinforcements in cement-based and composite materials;
  • Vulnerability analyses of high-performance concrete structural systems (bridges and buildings);
  • Design guidelines and specifications for new and existing high-performance reinforced structures.

Dr. Andrea Pranno
Dr. Umberto De Maio
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

  • high-performance materials
  • fiber-reinforced polymer (FRP)
  • fracture modeling
  • nano and micro reinforcements
  • concrete structures
  • composite materials
  • material design

Published Papers (3 papers)

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Research

17 pages, 6451 KiB  
Article
Exploring the Effect of Varying Fiber Dosages as Stirrup Substitutes in Torsion-Loaded Concrete Beams
by Muna H. Jaber, Bilal I. Abd Al-Zahra, Ayoob A. Ibrahim, Rafea F. Hassan, Nabeel H. Al-Salim and Husam H. Hussein
Buildings 2023, 13(7), 1865; https://doi.org/10.3390/buildings13071865 - 22 Jul 2023
Cited by 2 | Viewed by 721
Abstract
Over the past few decades, numerous studies have explored the use of steel fiber (SF) as an alternative to transverse reinforcement rebars in reinforced concrete beams, either partially or completely replacing them. However, there are limited studies that have investigated the effect of [...] Read more.
Over the past few decades, numerous studies have explored the use of steel fiber (SF) as an alternative to transverse reinforcement rebars in reinforced concrete beams, either partially or completely replacing them. However, there are limited studies that have investigated the effect of fiber dosage and length on reinforced concrete beam performance under torsional loads without the use of transverse reinforcement rebars. In this study, experimental investigations were conducted to examine the performance of reinforced SF concrete beams subjected to torsional load, utilizing SFs as a complete substitution of transverse reinforcement rebars. Ten different concrete mixes with varying dosages of SFs, namely 0%, 0.5%, 1.0%, and 1.5%, were examined while maintaining the same aspect ratio for fiber length and diameter. The results revealed that the addition of SFs in the concrete mix had an impact on its properties, reducing workability but increasing flexural, tensile, and compressive strengths. By incorporating 1.0% of SFs in the concrete mix, the missing torsional strength resulting from the absence of stirrups was adequately compensated. Moreover, the presence of SFs significantly influenced the ductile behavior beyond the point of cracking in the tested beams. Hence, it is recommended that SFs are incorporated with dosages of 1.0% and 1.5% in the concrete mixture, particularly for beams subjected to torsion, as a viable substitute for stirrups. Full article
(This article belongs to the Special Issue High-Performance Reinforced Concrete Structures and Composites)
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17 pages, 6225 KiB  
Article
The Reinforcing Effect of Nano-Modified Epoxy Resin on the Failure Behavior of FRP-Plated RC Structures
by Umberto De Maio, Daniele Gaetano, Fabrizio Greco, Paolo Lonetti, Paolo Nevone Blasi and Andrea Pranno
Buildings 2023, 13(5), 1139; https://doi.org/10.3390/buildings13051139 - 24 Apr 2023
Cited by 17 | Viewed by 1418
Abstract
The ability to manipulate concrete-based and composite materials at the nanoscale represents an innovative approach to improving their mechanical properties and designing high-performance building structures. In this context, a numerical investigation of the reinforcing effect of nano-modified epoxy resin on the structural response [...] Read more.
The ability to manipulate concrete-based and composite materials at the nanoscale represents an innovative approach to improving their mechanical properties and designing high-performance building structures. In this context, a numerical investigation of the reinforcing effect of nano-modified epoxy resin on the structural response of fiber-reinforced polymer (FRP)-plated reinforced concrete (RC) components has been proposed. In detail, an integrated model, based on a cohesive crack approach, is employed in combination with a bond–slip model to perform a failure analysis of strengthened structures. In particular, the proposed model consists of cohesive elements located on the physical interface between concrete and FRP systems equipped with an appropriate bond–slip law able to describe the reinforcing effect induced by the incorporation of nanomaterials in the bonding epoxy resin. Preliminary analyses, performed on reinforced concrete prisms, highlight an increment of 28% in the bond strength between concrete and the FRP system, offered by the nanomaterials embedded in the adhesive layer with respect to the standard one. Moreover, the numerically predicted structural response of a nano-modified FRP-plated beam shows an increment of around 5.5% in the failure load and a reduction in the slip between concrete and the FRP plate of around 76%, with respect to the reinforced beam without nanomaterial incorporation. Finally, the good agreement with experimental results, taken from the literature, highlights the excellent capability of the proposed model to simulate the mechanical behavior of such types of reinforced structures, emphasizing the beneficial effects of the nano-enhanced epoxy resin on the bond strength between concrete and FRP systems. Full article
(This article belongs to the Special Issue High-Performance Reinforced Concrete Structures and Composites)
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24 pages, 4367 KiB  
Article
Design Recommendations for Columns Made of Ultra-High-Performance Concrete and NiTi SMA Bars
by Javier Pereiro-Barceló, José L. Bonet, Begoña Martínez-Jaén and Beatriz Cabañero-Escudero
Buildings 2023, 13(4), 991; https://doi.org/10.3390/buildings13040991 - 08 Apr 2023
Viewed by 1390
Abstract
The use of new materials in construction endows structures with better mechanical characteristics. The combination of ultra-high-performance concrete (UHPC) and nickel and titanium (NiTi) shape memory alloy (SMA) improves the behavior of building structures by increasing both their ductility and dissipation energy due [...] Read more.
The use of new materials in construction endows structures with better mechanical characteristics. The combination of ultra-high-performance concrete (UHPC) and nickel and titanium (NiTi) shape memory alloy (SMA) improves the behavior of building structures by increasing both their ductility and dissipation energy due to the low-damage and self-centering properties of NiTi SMA. Since UHPC and NiTi SMA are expensive materials and still scarce in distribution channels, this article tries to offer design recommendations to reduce the length of the column-beam connection in which these new materials should be introduced, leaving the rest of the column with conventional materials. To achieve this, a nonlinear static pushover analysis of columns using finite element software, SeismoStruct, was performed. This model was calibrated using experimental results. Next, a parametric analysis was carried out to propose the design recommendations. Results indicated that an adequate design for the column–beam connection, considering both economy and performance, should include a main zone with UHPC and SMA reinforcements, a transition zone with UHPC and steel reinforcements, and another zone with conventional reinforced concrete. The transition zone improved the hybrid column’s performance without excessively raising the cost. The main zone length, the transition zone length, and the strength of the concrete in the rest of the column must be determined to ensure that the critical section of the column was in the main zone to develop the maximum strength and ductility. The length of the main zone depended on the compressive strength of the conventional concrete, the relative axial load of the column, and the required ductility. Full article
(This article belongs to the Special Issue High-Performance Reinforced Concrete Structures and Composites)
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