Foam Glass Crystalline Granular Material from a Polymineral Raw Mix
The article is devoted to the development of resource-saving technology of porous granular materials for energy-efficient construction. The relevance of the work for international research is to emphasize expanding the raw material base of porous lightweight concrete aggregates at the expense of tec...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-11-01
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| Series: | Crystals |
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| Online Access: | https://www.mdpi.com/2073-4352/11/12/1447 |
| _version_ | 1797505653343780864 |
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| author | Olga Miryuk Roman Fediuk Mugahed Amran |
| author_facet | Olga Miryuk Roman Fediuk Mugahed Amran |
| author_sort | Olga Miryuk |
| collection | DOAJ |
| description | The article is devoted to the development of resource-saving technology of porous granular materials for energy-efficient construction. The relevance of the work for international research is to emphasize expanding the raw material base of porous lightweight concrete aggregates at the expense of technogenic and substandard materials. The work aims to study the processes of porization of glass crystalline granules from polymineral raw materials mixtures. The novelty of the work lies in the establishment of regularities of thermal foaming of glass crystalline granules when using waste of magnetic separation of skarn-magnetite (WMS) ores and lignite clay. Studies of liquid glass mixtures with various mineral fillers revealed the possibility of the formation of a porous structure with the participation of opoka, WMS and lignite clay. This is due to the presence in the materials of substances that exhibit thermal activity with the release of a gas phase. The foaming efficiency of the investigated materials increases when combined with glass breakage. The addition of WMS and lignite clay to the glass mixture increases the pore size in comparison with foam glass. The influence of the composition of raw mixtures on the molding and stability of granules is determined. The addition of sodium carbonate helps to strengthen the raw granules and reduce the softening temperature of the mass. The composition of the molding mixture of glass breakage, liquid glass and a multicomponent additive is developed, which provides an improvement in the molding properties of the glass mass, foaming of granules at a temperature of 750 °C. Foam glass crystalline granules have polymodal porosity, characterized by a density of 330–350 kg/m<sup>3</sup>, a compressive strength of 3.2–3.7 MPa, and a thermal conductivity of 0.057–0.061 W/(m·°C). Accordingly, the developed granules have a high potential use in structural and heat-insulating concretes. |
| first_indexed | 2024-03-10T04:21:40Z |
| format | Article |
| id | doaj.art-255ad842923749da877ce12eae8de2d3 |
| institution | Directory Open Access Journal |
| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-03-10T04:21:40Z |
| publishDate | 2021-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Crystals |
| spelling | doaj.art-255ad842923749da877ce12eae8de2d32023-11-23T07:47:53ZengMDPI AGCrystals2073-43522021-11-011112144710.3390/cryst11121447Foam Glass Crystalline Granular Material from a Polymineral Raw MixOlga Miryuk0Roman Fediuk1Mugahed Amran2Rudny Industrial Institute, Rudny 111500, KazakhstanPolytechnic Institute, Far Eastern Federal University, 690922 Vladivostok, RussiaDepartment of Civil Engineering, College of Engineering, Prince Sattam Bin Abdulaziz University, Alkharj 11942, Saudi ArabiaThe article is devoted to the development of resource-saving technology of porous granular materials for energy-efficient construction. The relevance of the work for international research is to emphasize expanding the raw material base of porous lightweight concrete aggregates at the expense of technogenic and substandard materials. The work aims to study the processes of porization of glass crystalline granules from polymineral raw materials mixtures. The novelty of the work lies in the establishment of regularities of thermal foaming of glass crystalline granules when using waste of magnetic separation of skarn-magnetite (WMS) ores and lignite clay. Studies of liquid glass mixtures with various mineral fillers revealed the possibility of the formation of a porous structure with the participation of opoka, WMS and lignite clay. This is due to the presence in the materials of substances that exhibit thermal activity with the release of a gas phase. The foaming efficiency of the investigated materials increases when combined with glass breakage. The addition of WMS and lignite clay to the glass mixture increases the pore size in comparison with foam glass. The influence of the composition of raw mixtures on the molding and stability of granules is determined. The addition of sodium carbonate helps to strengthen the raw granules and reduce the softening temperature of the mass. The composition of the molding mixture of glass breakage, liquid glass and a multicomponent additive is developed, which provides an improvement in the molding properties of the glass mass, foaming of granules at a temperature of 750 °C. Foam glass crystalline granules have polymodal porosity, characterized by a density of 330–350 kg/m<sup>3</sup>, a compressive strength of 3.2–3.7 MPa, and a thermal conductivity of 0.057–0.061 W/(m·°C). Accordingly, the developed granules have a high potential use in structural and heat-insulating concretes.https://www.mdpi.com/2073-4352/11/12/1447crystalline granular materialman-made materialsblowing agentsthermal foamingporous structure |
| spellingShingle | Olga Miryuk Roman Fediuk Mugahed Amran Foam Glass Crystalline Granular Material from a Polymineral Raw Mix Crystals crystalline granular material man-made materials blowing agents thermal foaming porous structure |
| title | Foam Glass Crystalline Granular Material from a Polymineral Raw Mix |
| title_full | Foam Glass Crystalline Granular Material from a Polymineral Raw Mix |
| title_fullStr | Foam Glass Crystalline Granular Material from a Polymineral Raw Mix |
| title_full_unstemmed | Foam Glass Crystalline Granular Material from a Polymineral Raw Mix |
| title_short | Foam Glass Crystalline Granular Material from a Polymineral Raw Mix |
| title_sort | foam glass crystalline granular material from a polymineral raw mix |
| topic | crystalline granular material man-made materials blowing agents thermal foaming porous structure |
| url | https://www.mdpi.com/2073-4352/11/12/1447 |
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