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Recycled Materials in Concrete: Towards a Circular Economy in Construction

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

Deadline for manuscript submissions: 20 August 2025 | Viewed by 603

Special Issue Editors


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Guest Editor
Department of Architectural Engineering, Wonkwang University, 460 Iksan-daero, Iksan 54538, Republic of Korea
Interests: concrete; cement; aggregate; cementitious materials; fiber-reinforced concrete; high-performance concrete
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Guest Editor
School of Computing, Engineering and Physical Sciences, University of the West of Scotland, Paisley PA1 2BE, UK
Interests: cement and concrete materials; nano-/micro-mechanical characterization of materials; utilizing waste/recycled materials in construction; composites

Special Issue Information

Dear Colleagues,

In an era marked by increasing environmental challenges, such as climate change, land degradation, and water scarcity and quality, the need for innovative and comprehensive sustainable practices is urgent in the concrete industry. From a life cycle perspective, it is imperative to utilize recycled materials in concrete to effectively mitigate waste generation and the carbon footprint of concrete production. Over the past few decades, the valorization of recycled materials into sustainable construction developed rapidly.

This Special Issue aims to gather works related to the use of recyclable materials in the composition of concrete. The works may contain investigations related to its mechanical properties, the behavior of concrete in a fresh state, its durability, its thermal and acoustic properties, economic evaluations, ease of execution, or the repair and reinforcement of the elements built with this material.

Contributions related to research work and applications of these materials are welcome.

Prof. Dr. Se-Jin Choi
Dr. Wenzhong Zhu
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. Materials 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 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

  • recycled materials
  • waste materials
  • concrete
  • circular economy
  • sustainability

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Published Papers (1 paper)

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Research

19 pages, 9982 KiB  
Article
Experimental Investigation on Freeze–Thaw Durability of Polyacrylonitrile Fiber-Reinforced Recycled Concrete
by Rui Wang, Zhonglin Qiao, Xianghui Deng, Xiaolin Shen, Yiwen Yang, Pingan Wang and Jinzeng Zhang
Materials 2025, 18(7), 1548; https://doi.org/10.3390/ma18071548 - 29 Mar 2025
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Abstract
As a building material, recycled concrete (RC) has significant advantages in environmental protection and sustainable development. In the cold conditions of northwest China, in order to maintain the toughness and durability of buildings during service, polyacrylonitrile fiber (PANF) is often used as a [...] Read more.
As a building material, recycled concrete (RC) has significant advantages in environmental protection and sustainable development. In the cold conditions of northwest China, in order to maintain the toughness and durability of buildings during service, polyacrylonitrile fiber (PANF) is often used as a toughening agent with RC. In this study, mechanical tests and frost durability tests were conducted on polyacrylonitrile fiber-reinforced recycled concrete (PAN-RC). The mixing contents of PANF were 0.7 kg/m3, 0.8 kg/m3, and 0.9 kg/m3, while the substitution rates of recycled coarse aggregate (RCA) were 30%, 40%, and 50%. The experimental results indicate that the incorporation of PANF into recycled concrete significantly improves the mechanical properties and frost resistance durability of the material. From the test results, the freezing resistance of concrete is the best when the replacement amount of RCA is 40% and the amount of PANF is 0.8 kg/m3. Meanwhile, a freeze–thaw damage model for PAN-RC was developed based on experimental research. This model is feasible to predict the freeze–thaw damage degree of fiber-reinforced recycled concrete under various replacement rates of RCA and different dosages of PANF. It is considerable significant for both theoretical understanding and practical engineering applications of RC. Full article
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