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Minerals
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65 Years of Alkali Activated Cements and Materials: Achievements and...
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65 Years of Alkali Activated Cements and Materials: Achievements and Challenges

A special issue of Minerals (ISSN 2075-163X). This special issue belongs to the section "Clays and Engineered Mineral Materials".

Deadline for manuscript submissions: closed (15 July 2023) | Viewed by 2704

Special Issue Editors

Dr. Oleksandr Kovalchuk

E-Mail Website
Guest Editor
Glukhovskii Scientific Research Institute for Binders and Materials, Kyiv National University of Construction and Architecture, Povitroflotskyi Avenue 31, 03037 Kyiv, Ukraine
Interests: alkali-activated materials; waste treatment
Dr. Zvezdana Baščarević

E-Mail Website
Guest Editor
Materials Science Department, Institute for Multidisciplinary Research, University of Belgrade, 11 000 Belgrade, Serbia
Interests: alkali-activated materials; durability

Special Issue Information

Dear Colleagues,

Alkali-activated cements and concretes on their basis have become one of the most investigating materials in the chemical engineering scope. This year (2022), we are celebrating 65 years of alkali-activated materials’ active development and application. There are a lot of names used to describe alkali activated materials: soil silicates, geocements, geopolymers, alkaline cements, alkali-activated cements, etc., but only one real result—alkali-activated materials must be the cements of the new era, cements of the sustainable development. The long period of development of these materials has helped to solve a lot of the problems associated with them and give answers to a lot of questions, but at the same time, new problems and questions have emerged.

This Special Issue aims to collect, in a single volume, scientific papers covering recent achievements in developing alkali-activated materials and to discuss the challenges in the field of alkali-activated materials’ mix design and wide application.

Dr. Oleksandr Kovalchuk
Dr. Zvezdana Baščarević
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. Minerals is an international peer-reviewed open access monthly 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

  • alkali-activated materials
  • cement
  • concrete
  • zeolites
  • microstructure

Published Papers (2 papers)

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Research

11 pages, 2858 KiB  
Article
Influence of Dosage and Modulus on Soluble Sodium Silicate for Early Strength Development of Alkali-Activated Slag Cements
by Pavlo Kryvenko, Igor Rudenko, Oleksandr Kovalchuk, Oleksandr Gelevera and Oleksandr Konstantynovskyi
Minerals 2023, 13(9), 1164; https://doi.org/10.3390/min13091164 - 31 Aug 2023
Cited by 2 | Viewed by 813
Abstract
In world practice, the need for high-strength concrete with an intensive gain of early strength is due to an increase in requirements for characteristics of concrete and the desire to shorten the construction period. Alkali-activated cement, based on soluble sodium silicates (SSS), can [...] Read more.
In world practice, the need for high-strength concrete with an intensive gain of early strength is due to an increase in requirements for characteristics of concrete and the desire to shorten the construction period. Alkali-activated cement, based on soluble sodium silicates (SSS), can demonstrate high strength and rapid gain due to the nano-modifying effect of amorphous silica present in SSS. However, the problem with the effective use of such cement compositions is unsatisfactory short setting times. This work investigates the effect of modifying admixtures on the structure formation of alkali-activated slag cement (AASC), its physical and mechanical properties depending on characteristics of SSS and the basicity of the aluminosilicate component (precursor), which was changed by the ratio of the ordinary Portland cement (OPC) clinker and granulated blast furnace slag (GBFS). A positive synergistic effect was noticed from glycerol and trisodium phosphate, as the components of a complex admixture, to control the setting of AASC. This resulted in extending the initial setting time from 1 to 5 min to the values of 21–72 min. The compressive strength of 21–26.3 MPa by 3 h, 36.5–43.4 MPa by 1 day, and 84.7–117.1 MPa by 28 days was obtained. Proper shrinkage deformations were equal to 0.47–0.6 mm/m. It was shown that with an increase in the basicity of the aluminosilicate component, the properties of AASC increased both in the early and late stages of hardening. Full article
(This article belongs to the Special Issue 65 Years of Alkali Activated Cements and Materials: Achievements and Challenges)
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13 pages, 4499 KiB  
Article
Electrically Conductive Silicate Composite for Protection against Electrocorrosion
by Andrii Plugin, Teresa Rucińska, Olga Borziak, Oleksii Pluhin and Vitalii Zhuravel
Minerals 2023, 13(5), 610; https://doi.org/10.3390/min13050610 - 27 Apr 2023
Viewed by 1399
Abstract
This article presents the results of a study on the development of an anti-corrosion plaster composite based on water glass with increased electrical conductivity. Known acid-resistant quartz-fluorosilicate composites containing liquid sodium silicate, sodium fluorosilicate and acid-resistant high-silica filler in the form of quartz, [...] Read more.
This article presents the results of a study on the development of an anti-corrosion plaster composite based on water glass with increased electrical conductivity. Known acid-resistant quartz-fluorosilicate composites containing liquid sodium silicate, sodium fluorosilicate and acid-resistant high-silica filler in the form of quartz, andesite or diabase powder were chosen as the prototype. The low water resistance and low adhesion to Portland cement concrete of these composites limits their application. By adding granulated blast-furnace slag to the composite, it was possible to increase the water resistance of the solution and its adhesion to concrete. The addition of graphite filler to the composite made it possible to increase the electrical conductivity. This made it possible to obtain not only a corrosion-resistant (to chemical and physico-chemical corrosion) composite, but also to use it as a grounded protective screen to drain leakage currents from the structure, thus protecting it from both corrosion and electrocorrosion destruction. Full article
(This article belongs to the Special Issue 65 Years of Alkali Activated Cements and Materials: Achievements and Challenges)
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