Study of graphite addition in SiO2-Na2O-CaO vitreous system to produce a foam glass intended for electromagnetic shielding

Research unit Materials, Processes and Environment UR-MPE, Faculty of Engineering, University M’Hamed Bougara of Boumerdes, 35000 - Algeria; F. Benhaoua; D. Aoufi; Research Center in Industrial Technologies -CRTI- Echahid Mohammed Abassi, P.O. Box 64, Cheraga 16014 Algiers, Algeria; N. Stiti; Research unit Materials, Processes and Environment UR-MPE, Faculty of Engineering, University M’Hamed Bougara of Boumerdes, 35000 - Algeria; Y. Lamri; Research unit Materials, Processes and Environment UR-MPE, Faculty of Engineering, University M’Hamed Bougara of Boumerdes, 35000 - Algeria; M. Toubane; Research unit Materials, Processes and Environment UR-MPE, Faculty of Engineering, University M’Hamed Bougara of Boumerdes, 35000 - Algeria; R. Tala-Ighil; Research unit Materials, Processes and Environment UR-MPE, Faculty of Engineering, University M’Hamed Bougara of Boumerdes, 35000 - Algeria; I. Ouldamri; Research unit Materials, Processes and Environment UR-MPE, Faculty of Engineering, University M’Hamed Bougara of Boumerdes, 35000 - Algeria; F. Mouhouche; Laboratory of Signal and Systems, Institute of Electrical and Electronic Engineering, University M’Hamed Bougara of Boumerdes, 35000 - Algeria

doi:10.15251/djnb.2025.202.579

journal article·2025-06-15Open access

Study of graphite addition in SiO2-Na2O-CaO vitreous system to produce a foam glass intended for electromagnetic shielding

Research unit Materials, Processes and Environment UR-MPE, Faculty of Engineering, University M’Hamed Bougara of Boumerdes, 35000 - Algeria, F. Benhaoua, D. Aoufi, Research Center in Industrial Technologies -CRTI- Echahid Mohammed Abassi, P.O. Box 64, Cheraga 16014 Algiers, Algeria, N. Stiti, Research unit Materials, Processes and Environment UR-MPE, Faculty of Engineering, University M’Hamed Bougara of Boumerdes, 35000 - Algeria, Y. Lamri, Research unit Materials, Processes and Environment UR-MPE, Faculty of Engineering, University M’Hamed Bougara of Boumerdes, 35000 - Algeria, M. Toubane, Research unit Materials, Processes and Environment UR-MPE, Faculty of Engineering, University M’Hamed Bougara of Boumerdes, 35000 - Algeria, R. Tala-Ighil, Research unit Materials, Processes and Environment UR-MPE, Faculty of Engineering, University M’Hamed Bougara of Boumerdes, 35000 - Algeria, I. Ouldamri, Research unit Materials, Processes and Environment UR-MPE, Faculty of Engineering, University M’Hamed Bougara of Boumerdes, 35000 - Algeria, F. Mouhouche, Laboratory of Signal and Systems, Institute of Electrical and Electronic Engineering, University M’Hamed Bougara of Boumerdes, 35000 - Algeria

Digest Journal of Nanomaterials and Biostructures· Volume 20· Issue 2

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Source abstract

Abstract

In the present study, we have developed foam glass based on a waste glass of the SiO2- Na2O-CaO vitreous system, using calcium carbonate (CaCO3) which is a natural porogen very abundant in nature, 1% of which ensures the formation of a homogeneous porous structure, formed thanks to its decomposition during sintering process at 800°C. Graphite is introduced into the raw material matrix by substituting 0, 3, 9, and 15 wt% of the waste glass. To analyze the performance of the foam glass obtained, we measured several properties such as density, porosity, coefficient of absorption, reflection, and transmission of electromagnetic waves. The results clearly show that graphite has no remarkable effect on the properties of materials up to 15 wt%. Beyond this, the substitution has a significant effect on density (increasing from 0.225 to 0.64 g/cm3 ), porosity (decreasing from 91.01 to 73.59 %), and electromagnetic wave Absorption, which improves from 20 % for the sample with 0 wt % graphite (G1) to 91.37 % for the sample with 15 wt % graphite (G2).

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Research context

Ceramics & glasses

OpenAlex topics: Pigment Synthesis and Properties · Material Science and Thermodynamics · Recycling and utilization of industrial and municipal waste in materials production

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

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