University of Oulu

Chuqing Jiang, D.D. Ramteke, Jing Li, Rafal Sliz, Harisankar Sreenivasan, Christopher Cheeseman, Paivo Kinnunen, Preparation and characterization of binary Mg-silicate glasses via Sol-Gel route, Journal of Non-Crystalline Solids, Volume 606, 2023, 122204, ISSN 0022-3093,

Preparation and characterization of binary Mg-silicate glasses via Sol-Gel route

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Author: Jiang, Chuqing1; Ramteke, D. D.1; Li, Jing1;
Organizations: 1Fibre and Particle Engineering Research Unit, University of Oulu, P.O. Box 4300, FI, 90014, Finland
2Optoelectronics and Measurement Techniques Unit, University of Oulu, P.O. Box 4500, FI, 90014, Finland
3Department of Civil and Environmental Engineering, Imperial College London, SW7 2BU, United Kingdom
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 15.6 MB)
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Language: English
Published: Elsevier, 2023
Publish Date: 2023-05-09


Sol-gel processing allows synthesis of low-energy glasses. In this work, binary magnesium silicate glasses with various MgO contents are synthesized using a modified sol-gel route. TGA and XRD analyses indicate that amorphous glasses with up to 50 mol% MgO can be obtained at 500°C. The reactivity of the glasses is evaluated to assess the use of the sol-gel technique in the large-scale synthesis of alternative cementitious materials. Reactivity tests show that, as MgO content increases, reactivity of glasses increases, reaches an optimum and then declines. This trend doesn’t agree with the theoretical one estimated by NBO/T value, which is generally used for the evaluation of glass reactivity. Mg²⁺ ions play a role as the network modifier when first introduced to silicate glasses. This leads to the depolymerization of the networks, causing an increase in reactivity. Then the magnesium partly behaves as a network former, bonding with oxygens to form MgOₓ polyhedron when there are insufficient primary glass-forming oxide SiO₂, resulting in the polymerization of networks, hence the decrease in reactivity.

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Series: Journal of non-crystalline solids
ISSN: 0022-3093
ISSN-E: 1873-4812
ISSN-L: 0022-3093
Volume: 606
Article number: 122204
DOI: 10.1016/j.jnoncrysol.2023.122204
Type of Publication: A1 Journal article – refereed
Field of Science: 116 Chemical sciences
216 Materials engineering
Funding: The authors gratefully acknowledge the financial support received from Academy of Finland (grant 322085) and The University of Oulu & The Academy of Finland Profi5 (326291). Part of the work was carried out with the support of the Centre for Material Analysis, University of Oulu, Finland.
Academy of Finland Grant Number: 322085
Detailed Information: 322085 (Academy of Finland Funding decision)
Copyright information: © 2023 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (