Recent Developments in Porous Geopolymers: Synthesis, Properties and Applications

A special issue of Ceramics (ISSN 2571-6131).

Deadline for manuscript submissions: closed (15 January 2022) | Viewed by 3629

Special Issue Editors


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Guest Editor
New Technologies Research Center, University of West Bohemia, Univerzitní 8, 30614 Plzeň, Czech Republic
Interests: sol-gel glasses and ceramics; geopolymers; biodegradable polymers; biopolymers and composites; processing techniques; structure-property relationships
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
New Technologies Research Center, University of West Bohemia, Univerzitní 8, 30614 Plzeň, Czech Republic
Interests: advanced polymer nanocomposites; synthesis and characterization; energy storage; sensors; EMI shielding applications
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Geopolymers are inorganic, typically ceramic, materials that form long-range, covalently bonded, amorphous networks. Since the late 1970s, this type of material has undergone a tremendous shift in knowledge, from fundamental chemical and physical properties to commercial applications. Over the past few decades, geopolymers have exhibited beneficial properties in a wide variety of potential and existing applications, such as fire-resistant materials, heat-resistant (nano)composites, thermal insulation, thermal shock refractories, membranes, filters, adsorbents/ion-exchangers, photocatalysts, bioreactors, binders, industry resin, radioactive and toxic waste containment, among many more. In addition, the driving force in geopolymer research is the simpler and less energy-intensive preparation process compared to other similar types of materials. Today, porous geopolymers have become the subject of promising research in the field of porous inorganic materials due to their unique combination of good thermal stability and excellent mechanical properties.

This Special Issue on “Recent Developments in Porous Geopolymers: Synthesis, Properties, and Applications” will present the most recent developments in the field of porous geopolymers and their potential applications in chemical engineering, construction industry, wastewater treatment, innovative design, and eco-friendly materials.

The scope of this Special Issue includes the following themes: processing methods, characterization, properties evaluation, and novel techniques and applications. Thus, authors are welcome to submit their latest research in the form of original high-quality full articles, communications, or reviews that can enrich key knowledge and help further understand this fascinating area of research.

Dr. Tomáš Kovářík
Dr. Kalim Deshmukh
Guest Editors

Manuscript Submission Information

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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. Ceramics is an international peer-reviewed open access quarterly 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 1600 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

  • Porous geopolymers
  • Geopolymer composites
  • Processing techniques
  • Microstructure
  • Porosity
  • Mechanical properties
  • Thermal behavior

Published Papers (1 paper)

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Research

18 pages, 2092 KiB  
Article
An Experimental Study of the Effects of Low-Calcium Fly Ash on Type II Concrete
by Kong Fah Tee and Sayedali Mostofizadeh
Ceramics 2021, 4(4), 600-617; https://doi.org/10.3390/ceramics4040043 - 25 Oct 2021
Cited by 4 | Viewed by 2862
Abstract
In this study, the compressive strength and the permeation properties of fly ash-based Geopolymer were experimentally investigated. Type 2 Portland cement (T2PC) was partially or entirely replaced with 0, 10, 20, 30, 50, 70, and 100% of fly ash (FA). The laboratory tests [...] Read more.
In this study, the compressive strength and the permeation properties of fly ash-based Geopolymer were experimentally investigated. Type 2 Portland cement (T2PC) was partially or entirely replaced with 0, 10, 20, 30, 50, 70, and 100% of fly ash (FA). The laboratory tests were conducted for compressive strength at 7, 28, and 90 days, and permeation properties such as water absorption at 7 and 28 days. The main goal was to produce eco-friendly concrete with high strength and low permeability through blending cementitious materials including low Calcium (Ca) (T2PC and FA) for protecting concrete against sulphate attacks and other chemically destructive compounds in the environment. This study focused on the effectiveness of the curing period, combinations of chemical activators by varying the molarity of alkaline solutions between 4.16 and 12.96 M and keeping the sodium silicate (SS) to sodium hydroxide (SH) by the weight ratio of 2.5. Lab observations from this study demonstrated that the compressive strength was enhanced with the increment in fly ash content at all ages, with optimum being at 20% as the replacement of T2PC. Full article
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