The Usability of Metallurgical Production Waste as a Siliceous Component in Autoclaved Aerated Concrete Technology
The reconstruction of buildings is a complex process that often requires the consideration of the construction load when selecting correct building materials. Autoclaved aerated concrete (AAC)—which has a lower bulk density (compared to traditional masonry materials)—is very beneficial in such appli...
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MDPI AG
2024-10-01
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| author | Lenka Mészárosová Vít Černý Jindřich Melichar Pavlína Ondříčková Rostislav Drochytka |
| author_facet | Lenka Mészárosová Vít Černý Jindřich Melichar Pavlína Ondříčková Rostislav Drochytka |
| author_sort | Lenka Mészárosová |
| collection | DOAJ |
| description | The reconstruction of buildings is a complex process that often requires the consideration of the construction load when selecting correct building materials. Autoclaved aerated concrete (AAC)—which has a lower bulk density (compared to traditional masonry materials)—is very beneficial in such applications. A current trend in AAC development is the utilization of secondary raw materials in high-performance AAC, characterized by higher bulk density and compressive strength than regular AAC. The increase in bulk density is achieved by increasing the content of quartz sand in the mixing water. In this study, part of the siliceous component was replaced by ladle slag, foundry sand, furnace lining, and chamotte block powder. These materials are generated as by-products in metallurgy. The substitution rates were 10% and 30%. The samples were autoclaved in a laboratory autoclave for 8 h of isothermal duration at 190 °C with a saturated water vapor pressure of 1.4 MPa. The physical–mechanical parameters were determined, and the microstructure was described by XRD and SEM analyses. The results were compared with traditional AAC, with silica sand being used as the siliceous component. The measurement results show that sand substitution by the secondary raw material is possible, and it does not have a significant impact on the properties of AAC, and in a proper dosage, it can be beneficial for AAC production. |
| format | Article |
| id | doaj-art-36d237549d074bc9b3252fdc001677e6 |
| institution | OA Journals |
| issn | 2075-5309 |
| language | English |
| publishDate | 2024-10-01 |
| publisher | MDPI AG |
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| series | Buildings |
| spelling | doaj-art-36d237549d074bc9b3252fdc001677e62025-08-20T02:11:12ZengMDPI AGBuildings2075-53092024-10-011410315510.3390/buildings14103155The Usability of Metallurgical Production Waste as a Siliceous Component in Autoclaved Aerated Concrete TechnologyLenka Mészárosová0Vít Černý1Jindřich Melichar2Pavlína Ondříčková3Rostislav Drochytka4Faculty of Civil Engineering, Brno University of Technology, Veveří 95, 602 00 Brno, Czech RepublicFaculty of Civil Engineering, Brno University of Technology, Veveří 95, 602 00 Brno, Czech RepublicFaculty of Civil Engineering, Brno University of Technology, Veveří 95, 602 00 Brno, Czech RepublicFaculty of Civil Engineering, Brno University of Technology, Veveří 95, 602 00 Brno, Czech RepublicFaculty of Civil Engineering, Brno University of Technology, Veveří 95, 602 00 Brno, Czech RepublicThe reconstruction of buildings is a complex process that often requires the consideration of the construction load when selecting correct building materials. Autoclaved aerated concrete (AAC)—which has a lower bulk density (compared to traditional masonry materials)—is very beneficial in such applications. A current trend in AAC development is the utilization of secondary raw materials in high-performance AAC, characterized by higher bulk density and compressive strength than regular AAC. The increase in bulk density is achieved by increasing the content of quartz sand in the mixing water. In this study, part of the siliceous component was replaced by ladle slag, foundry sand, furnace lining, and chamotte block powder. These materials are generated as by-products in metallurgy. The substitution rates were 10% and 30%. The samples were autoclaved in a laboratory autoclave for 8 h of isothermal duration at 190 °C with a saturated water vapor pressure of 1.4 MPa. The physical–mechanical parameters were determined, and the microstructure was described by XRD and SEM analyses. The results were compared with traditional AAC, with silica sand being used as the siliceous component. The measurement results show that sand substitution by the secondary raw material is possible, and it does not have a significant impact on the properties of AAC, and in a proper dosage, it can be beneficial for AAC production.https://www.mdpi.com/2075-5309/14/10/3155aerated autoclaved concreteby-productsalternative raw materialsfurnace liningchamotte wasteladle slag |
| spellingShingle | Lenka Mészárosová Vít Černý Jindřich Melichar Pavlína Ondříčková Rostislav Drochytka The Usability of Metallurgical Production Waste as a Siliceous Component in Autoclaved Aerated Concrete Technology Buildings aerated autoclaved concrete by-products alternative raw materials furnace lining chamotte waste ladle slag |
| title | The Usability of Metallurgical Production Waste as a Siliceous Component in Autoclaved Aerated Concrete Technology |
| title_full | The Usability of Metallurgical Production Waste as a Siliceous Component in Autoclaved Aerated Concrete Technology |
| title_fullStr | The Usability of Metallurgical Production Waste as a Siliceous Component in Autoclaved Aerated Concrete Technology |
| title_full_unstemmed | The Usability of Metallurgical Production Waste as a Siliceous Component in Autoclaved Aerated Concrete Technology |
| title_short | The Usability of Metallurgical Production Waste as a Siliceous Component in Autoclaved Aerated Concrete Technology |
| title_sort | usability of metallurgical production waste as a siliceous component in autoclaved aerated concrete technology |
| topic | aerated autoclaved concrete by-products alternative raw materials furnace lining chamotte waste ladle slag |
| url | https://www.mdpi.com/2075-5309/14/10/3155 |
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