Recycling alkali activated slag into artificial aggregate: Influence of particle size distribution of the starting material on granulation
Kursula, Kalle; Illikainen, Mirja; Perumal, Priyadharshini (2023-11-29)
Springer
29.11.2023
Kursula, K., Illikainen, M. & Perumal, P. Recycling alkali activated slag into artificial aggregate: Influence of particle size distribution of the starting material on granulation. Low-carbon Mater. Green Constr. 1, 28 (2023). https://doi.org/10.1007/s44242-023-00031-5.
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© The Author(s) 2023. Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
https://creativecommons.org/licenses/by/4.0/
© The Author(s) 2023. Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
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Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:oulu-202401021025
https://urn.fi/URN:NBN:fi:oulu-202401021025
Tiivistelmä
Abstract
Wet granulation is a potential method to develop artificial aggregates. In this paper, the granulation of recycled alkali-activated slag powders with different particle size (d50 ranging between 12.9–127.7 μm) distributions were investigated in order to find how these affect on the engineering properties of the artificial aggregates. Blast furnace slag was added as co-binder in 10–30 wt. % during the granulation process and to enhance the properties, especially mechanical strength. The results show that the particle size of the raw material significantly affects the engineering properties of the produced aggregates, such as the crushing force (19–131.8 N), bulk density, water absorption, porosity and microstructure of the granules. The results show that granulation is a promising method to recycle alkali-activated materials as lightweight aggregates to replace natural aggregates.
Wet granulation is a potential method to develop artificial aggregates. In this paper, the granulation of recycled alkali-activated slag powders with different particle size (d50 ranging between 12.9–127.7 μm) distributions were investigated in order to find how these affect on the engineering properties of the artificial aggregates. Blast furnace slag was added as co-binder in 10–30 wt. % during the granulation process and to enhance the properties, especially mechanical strength. The results show that the particle size of the raw material significantly affects the engineering properties of the produced aggregates, such as the crushing force (19–131.8 N), bulk density, water absorption, porosity and microstructure of the granules. The results show that granulation is a promising method to recycle alkali-activated materials as lightweight aggregates to replace natural aggregates.
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