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New Materials and Methods for Reinforcement and Thermal Improvement of Existing Structures

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Construction and Building Materials".

Deadline for manuscript submissions: 10 December 2026 | Viewed by 108

Special Issue Editor


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Guest Editor
Department of Engineering and Technology, University of Huddersfield, Huddersfield HD1 3DH, UK
Interests: retrofitting buildings; sustainable construction materials; new advanced materials for upgrading of existing masonry and wood historic constructions; structural analysis and retrofitting of historic constructions; mechanics of structures and experimental analysis of existing structures
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Special Issue Information

Dear Colleagues,

The need to decarbonize the built environment calls for innovative materials and sustainable retrofit solutions for existing masonry, concrete, and timber structures. This Special Issue explores new research on green materials, low-carbon composites, bio-based solutions, and circular economy approaches in structural rehabilitation. Emphasis is placed on zero-carbon technologies, reversible interventions, and energy-efficient reinforcement techniques that enhance durability while minimizing environmental impact. Contributions on fiber-reinforced and natural materials, metals, suitable mortars, geopolymer-based solutions, adaptive reuse strategies, and digital-driven retrofitting are welcome. By integrating sustainability and structural performance, this Special Issue aims to foster innovative approaches to increase thermal efficiency and strengthen aging building stock while reducing its carbon footprint. Researchers, engineers, and practitioners are invited to contribute to this critical discussion on the future of sustainable construction.

Prof. Dr. Marco Corradi
Guest Editor

Manuscript Submission Information

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Keywords

  • green materials
  • low-carbon composites
  • bio-based solutions
  • circular economy
  • rehabilitation
  • earthquake engineering
  • thermal efficiency

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Published Papers (1 paper)

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Research

18 pages, 4892 KiB  
Article
Enhancing High-Speed Penetration Resistance of Ultra-High-Performance Concrete Through Hybridization of Steel and Glass Fibers
by Mehmet Gesoglu, Guler Fakhraddin Muhyaddin, Yavuz Yardim and Marco Corradi
Materials 2025, 18(12), 2715; https://doi.org/10.3390/ma18122715 (registering DOI) - 9 Jun 2025
Viewed by 11
Abstract
Ultra-high-performance concrete (UHPC) is a material with high mechanical properties that requires the use of fibers to overcome its brittleness, but the use of only one type of fiber may not improve UHPC performance enough. This study investigates the hybrid use of steel [...] Read more.
Ultra-high-performance concrete (UHPC) is a material with high mechanical properties that requires the use of fibers to overcome its brittleness, but the use of only one type of fiber may not improve UHPC performance enough. This study investigates the hybrid use of steel and glass fibers to achieve ultra-high strength along with improved ductility and impact resistance. A total of 22 concrete samples, including both plain (unreinforced) and fiber-reinforced types, were produced using micro straight-steel fibers, hooked steel fibers, and micro glass fibers, either individually or in combination. The mechanical properties, ductility, and impact behavior of the concrete samples were evaluated through experimental testing. The inclusion of microfibers had little impact on the compressive strength of concrete, which remained in the range of 130–150 MPa. However, it significantly enhanced the tensile strength, as evidenced by a flexural strength increase of up to 163% compared to the control concrete without microfibers. Numerical simulations were carried out to complement and validate the experimental investigation of projectile penetration. The depth of projectile penetration (DOP) test results were compared with existing empirical models from the literature. The incorporation of hooked steel fibers in hybrid blends significantly improved ductility and enhanced penetration resistance. In addition, previously proposed models from the literature were found to be highly conservative in predicting DOP at high projectile velocities. Full article
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