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Advances in Function Geopolymer Materials—Second Edition
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Advances in Function Geopolymer Materials—Second Edition

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

Deadline for manuscript submissions: 20 November 2025 | Viewed by 114

Special Issue Editors

Dr. Michał Łach

E-Mail Website
Guest Editor
1. Department of Materials Engineering, Faculty of Materials Engineering and Physics, Cracow University of Technology, Jana Pawła II 37, 31-864 Cracow, Poland
2. Interdisciplinary Center for Circular Economy, Cracow University of Technology, Warszawska 24, 31-155 Krakow, Poland
Interests: geopolymer; zeolites; recycling; circular economy; waste immobilization
Special Issues, Collections and Topics in MDPI journals
Dr. Kinga Korniejenko

E-Mail Website
Guest Editor
Institute of Material Engineering, Faculty of Material Engineering and Physics, Cracow University of Technology, Jana Pawła II 37, 31-864 Cracow, Poland
Interests: geopolymer; geopolymer composites; circular economy; additive manufacturing
Special Issues, Collections and Topics in MDPI journals
Dr. Aleksandar Nikolov

E-Mail Website
Guest Editor
Institute of Mineralogy and Crystallography, Bulgarian Academy of Science (IMC-BAS), Acad. G. Bonchev Str., bl. 107, 1113 Sofia, Bulgaria
Interests: geopolymer; geopolymer composites; zeolites; antibacterial coatings
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Geopolymer materials classified as inorganic polymers have been known for several decades, but there is currently an increased interest in this type of material. Because geopolymer production technology is sensitive to changes in raw material prices, it is difficult for geopolymers to compete with the prices of conventional mass-produced concretes. However, there is a lot of interest in many specialized, often niche, applications. One example is thermal insulation. Geopolymer materials have a number of unique properties and are classified as functional materials. Thanks to the properly designed syntheses of these materials, it is possible to control various properties. This Special Issue will present the latest achievements and research results on geopolymers as functional materials. We invite all scientists involved in the development of advanced geopolymer binders and concretes as well as advanced geopolymer composites to submit to this issue.

This Special Issue aims to attract original contributions in topics related to advanced functions of geopolymers. We believe that this collection will summarize the current state of the art and featured trends in this field and will thus be a source of new ideas for future research.

Dr. Michał Łach
Dr. Kinga Korniejenko
Dr. Aleksandar Nikolov
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

  • geopolymer
  • functional material
  • modern insulation material
  • sustainable development
  • innovation in building materials

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Published Papers (1 paper)

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Research

30 pages, 10507 KiB  
Article
Thermal Properties of Geopolymer Concretes with Lightweight Aggregates
by Agnieszka Przybek, Paulina Romańska, Kinga Korniejenko, Krzysztof Krajniak, Maria Hebdowska-Krupa and Michał Łach
Materials 2025, 18(13), 3150; https://doi.org/10.3390/ma18133150 - 3 Jul 2025
Abstract
Despite the availability of various materials for chimney applications, ongoing research seeks alternatives with improved thermal and chemical resistance. Geopolymers are a promising solution, exhibiting exceptional resistance to high temperatures, fire, and aggressive chemicals. This study investigates fly ash-based lightweight geopolymer concretes that [...] Read more.
Despite the availability of various materials for chimney applications, ongoing research seeks alternatives with improved thermal and chemical resistance. Geopolymers are a promising solution, exhibiting exceptional resistance to high temperatures, fire, and aggressive chemicals. This study investigates fly ash-based lightweight geopolymer concretes that incorporate expanded clay aggregate (E.C.A.), perlite (P), and foamed geopolymer aggregate (F.G.A.). The composites were designed to ensure a density below 1200 kg/m3, reducing overall weight while maintaining necessary performance. Aggregate content ranged from 60 to 75 wt.%. Physical (density, thickness, water absorption), mechanical (flexural and compressive strength), and thermal (conductivity, resistance) properties were evaluated. F.G.A. 60 achieved a 76.8% reduction in thermal conductivity (0.1708 vs. 0.7366 W/(m·K)) and a 140.4% increase in thermal resistance (0.1642 vs. 0.0683). The F.G.A./E.C.A./P 60 mixture showed the highest compressive strength (18.069 MPa), reaching 52.7% of the reference concrete’s strength, with a 32.3% lower density (1173.3 vs. 1735.0 kg/m3). Water absorption ranged from 4.9% (REF.) to 7.3% (F.G.A. 60). All samples, except F.G.A. 70 and F.G.A. 75, endured heating up to 800 °C. The F.G.A./E.C.A./P 60 composite demonstrated well-balanced performance: low thermal conductivity (0.2052 W/(m·K)), thermal resistance up to 1000 °C, flexural strength of 4.386 MPa, and compressive strength of 18.069 MPa. The results confirm that well-designed geopolymer lightweight concretes are suitable for chimney and flue pipe linings operating between 500 and 1000 °C and exposed to acidic condensates and aggressive chemicals. This study marks the initial phase of a broader project on geopolymer-based prefabricated chimney systems. Full article
(This article belongs to the Special Issue Advances in Function Geopolymer Materials—Second Edition)
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