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Composite Materials for Sustainable Strengthening of Masonry Structures

A special issue of Sustainability (ISSN 2071-1050). This special issue belongs to the section "Sustainable Engineering and Science".

Deadline for manuscript submissions: closed (30 November 2022) | Viewed by 5825

Special Issue Editors


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Guest Editor
Centre for Structural Engineering and informatics, Department of Civil Engineering, University of Nottingham, Nottingham NG7 2RD, UK
Interests: durability and mechanics of construction materials and structures; experimental testing and computational modeling and destructive and nondestructive test methods; evaluation of the mechanical properties and durability of textile reinforced mortars and concrete and development of novel constitutive laws for simulation of the nonlinear response of these composites
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Guest Editor
Department of Engineering, Durham University, Durham DH1 3LE, UK
Interests: masonry buildings; monumental structures; masonry arch bridges; infilled frames; nonlinear analyses; seismic analyses; discrete models; finite element models
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
Department of Civil, Enviromental and Architectural Engineering, University of Padova, 35122 Padova, Italy
Interests: the analysis of existing structures; with special attention to masonry and steel bridges; the study of composite materials as strengthening system applied to masonry structures; the investigation of the structural performance of new steel bridges subjected to extreme actions

Special Issue Information

Dear Colleagues,

Masonry structures represent a great percentage of existing and historical buildings, bridges, and monumental constructions worldwide. A considerable portion of these structures represent the architectural cultural heritage of many countries, particularly in Europe. From their time of construction, historical masonry structures have been subjected to the effect of environmental actions and many cases to rare events, such as earthquakes or flooding, leading to a progressive material degradation and, in some cases, structural damage, which have caused the reduction of their structural safety level. For this reason, in many cases, repair and/or strengthening interventions are required in order to preserve masonry architectures and maintain their functionality.

Numerous studies concerning “traditional” and “innovative” strengthening techniques applied to masonry structures, with a special attention to material compatibility, reversibility, and durability of repair/retrofit intervention, have been presented in the literature. Within this regard, numerous techniques of retrofitting for historical and monumental masonry buildings, based on composite fiber materials, have recently been developed and widely investigated by means of experimental tests and numerical simulations. These new retrofitting strategies, compared to traditional invasive techniques, are more appropriate for the preservation needs of cultural heritage associated to historical constructions.

This Special Issue aims to present the newest repair/strengthening techniques, based on fiber-reinforced composite materials, and recent developments in experimental and numerical investigation methods for masonry structures strengthened by means of these composite reinforcement materials. Particular attention will be given to new numerical models for nonlinear analyses and experimental works aimed at validation of procedures for practical design and safety assessments. The main target of the Special Issue is to promote a critical discussion of the multiple aspects related to the use of sustainable repair/strengthening systems applied to old masonries, including historical and monumental constructions.

Dr. Bahman Ghiassi
Dr. Bartolomeo Pantò
Dr. Paolo Zampieri
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. Sustainability 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 2400 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

  • Existing Buildings
  • Historic Masonry
  • Architectural Heritage
  • Seismic Retrofitting
  • Innovative Materials
  • Computational Mechanics
  • FRP-FRCM Systems
  • FRC-FRM Systems
  • Natural Fibers
  • Joint Repointing
  • Numerical Modelling

Published Papers (3 papers)

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Research

17 pages, 7418 KiB  
Article
Research on Flexural Bearing Capacity of Reinforced Hollow Slab Beams Based on Polyurethane Composite Material Positive and Negative Pouring Method
by Jin Li, Tiancheng Zhou, Xiang Li, Dalu Xiong, De Chang, Zhongmei Lu and Guanghua Li
Sustainability 2022, 14(24), 17030; https://doi.org/10.3390/su142417030 - 19 Dec 2022
Viewed by 1173
Abstract
In order to explore the construction technology of prestressed steel strand–polyurethane cement composites for strengthening hollow slab beams, two reinforced test beams (L1, L2) and one unreinforced test beam (L0) were subjected to flexural static load tests. The deflection, ductility, stiffness, strain, and [...] Read more.
In order to explore the construction technology of prestressed steel strand–polyurethane cement composites for strengthening hollow slab beams, two reinforced test beams (L1, L2) and one unreinforced test beam (L0) were subjected to flexural static load tests. The deflection, ductility, stiffness, strain, and bearing capacity of each test beam were used to summarize the influence of different reinforcement techniques on the flexural performance of hollow slab beams. Research shows the prestressed steel strand–polyurethane composite material was well-bonded to the hollow slab beam, which effectively inhibits the development of concrete cracks and delays the damage process of hollow slab beams, that the reinforcement effect of the test beam L1 under the reverse pouring process was remarkable, and the bending performance of the test beam L2 under the forward pouring process of the simulated real bridge was good, which was much better than that of the unreinforced beam L0. The use of tensile prestressed steel strands and forward casting of polyurethane–cement composite materials effectively improved the flexural bearing capacity of the test beams, and this reinforcement process can be further extended to engineering applications. Full article
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16 pages, 4794 KiB  
Article
Ultimate Limit State Reliability-Based Optimization of MSE Wall Considering External Stability
by Zafar Mahmood, Mohsin Usman Qureshi, Zubair Ahmed Memon and Qadir Bux alias Imran Latif
Sustainability 2022, 14(9), 4968; https://doi.org/10.3390/su14094968 - 21 Apr 2022
Cited by 2 | Viewed by 1855
Abstract
We present reliability-based optimization (RBO) of the Mechanically Stability Earth (MSE) walls, using constrained optimization, considering the external stability, under ultimate limit state conditions of sliding, eccentricity, and bearing capacity. The design is optimized for a target reliability index of 3 that corresponds [...] Read more.
We present reliability-based optimization (RBO) of the Mechanically Stability Earth (MSE) walls, using constrained optimization, considering the external stability, under ultimate limit state conditions of sliding, eccentricity, and bearing capacity. The design is optimized for a target reliability index of 3 that corresponds to an approximate failure probability of 1 in 1000. Reliability index is calculated by the first-order reliability method (FORM). The MSE wall, founded on cohesionless soil, with horizontal backfill and uniform live traffic surcharge, is studied. The RBO results are reported for the height of MSE wall ranging from 1.5 m to 20 m. For target reliability index of 3, the optimized length to height ratio, Lopt/H, of the MSE wall is greater than 0.7 (the minimum length to height ratio requirement of AASHTO) for H4.5 m, and then it decreases below the minimum required value of 0.7 for H>4.5 m. The RBO approach presented in this study will help practitioners to achieve cost-effectiveness in design. Full article
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17 pages, 11993 KiB  
Article
Use of Mining Tailings or Their Sedimentation and Flotation Fractions in a Mixture with Soil to Produce Structural Ceramics
by Igor B C. Amaral, Luis Carlos D. Cavalcante, José D. Fabris, Bernat V. Prat and Arlete B. Reis
Sustainability 2021, 13(2), 911; https://doi.org/10.3390/su13020911 - 18 Jan 2021
Cited by 4 | Viewed by 1772
Abstract
The ceramic materials industry has vast potential for use of waste from industrial processes, such as iron mining tailings. The aim of this study was to test technological use of tailings samples from the dam rupture of the Samarco S.A. Company in 2015 [...] Read more.
The ceramic materials industry has vast potential for use of waste from industrial processes, such as iron mining tailings. The aim of this study was to test technological use of tailings samples from the dam rupture of the Samarco S.A. Company in 2015 to produce structural ceramics. Sedimentation and flotation processes were used to improve their characteristics, analyzing their chemical and mineralogical composition and granulometry. We produced 48 samples with a mixture of soil and residues in proportions of 10, 20, and 30 wt%, with sintering at 950 °C. The results showed that co-processing of iron mining tailings can be considered viable for improving certain aspects of some technological properties. The maximum amount of residue used was 30 wt% for any of the fractions used, as above this concentration the specimens lose important characteristics. Full article
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