Publication detail

The Usability of Metallurgical Production Waste as a Siliceous Component in Autoclaved Aerated Concrete Technology

MÉSZÁROSOVÁ, L. ČERNÝ, V. MELICHAR, J. ONDŘÍČKOVÁ, P. DROCHYTKA, R.

Original Title

The Usability of Metallurgical Production Waste as a Siliceous Component in Autoclaved Aerated Concrete Technology

Type

journal article in Web of Science

Language

English

Original Abstract

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 degrees 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.

Keywords

aerated autoclaved concrete; by-products; alternative raw materials; furnace lining; chamotte waste; ladle slag; foundry sand; microstructure; tobermorite; physical-mechanical parameters

Authors

MÉSZÁROSOVÁ, L.; ČERNÝ, V.; MELICHAR, J.; ONDŘÍČKOVÁ, P.; DROCHYTKA, R.

Released

3. 10. 2024

Publisher

MDPI

Location

BASEL

ISBN

2075-5309

Periodical

Buildings

Year of study

14

Number

3155

State

Swiss Confederation

Pages count

18

URL

https://www.mdpi.com/2075-5309/14/10/3155

BibTex

@article{BUT193397,
  author="Lenka {Mészárosová} and Vít {Černý} and Jindřich {Melichar} and Pavlína {Ondříčková} and Rostislav {Drochytka}",
  title="The Usability of Metallurgical Production Waste as a Siliceous Component in Autoclaved Aerated Concrete Technology",
  journal="Buildings",
  year="2024",
  volume="14",
  number="3155",
  pages="18",
  doi="10.3390/buildings14103155",
  issn="2075-5309",
  url="https://www.mdpi.com/2075-5309/14/10/3155"
}