Proceedings of the 2024 6th International Conference on Hydraulic, Civil and Construction Engineering (HCCE 2024)

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Study on Pore Size Characteristics of Coal Gangue Waste Modified by Ionic Curing Agent under Freeze-thaw Effect

Authors
Taofeng Zhao1, *, Jianjun Zhang1
1Liaoning University of Engineering and Technology, Fuxin City, 123000, China
*Corresponding author. Email: 15809819085@163.com
Corresponding Author
Taofeng Zhao
Available Online 13 June 2025.
DOI
10.2991/978-94-6463-726-7_50How to use a DOI?
Keywords
low-field nuclear magnetic resonance; ionic curing agent; coal gangue; freeze-thaw cycle
Abstract

As an industrial solid waste with large reserves in China, the poor physical properties of coal gangue cannot meet the durability requirements needed for applications such as backfill enhancement for open-pit mining in seasonal freezing areas, roadbed engineering, and ecological restoration of gangue mountains. Ion curing agent is a new type of treatment, in order to explore the improvement effect of ion curing agent on the pore structure and frost resistance of gangue waste, through the low-field nuclear magnetic resonance technology, the porosity and pore structure distribution of gangue waste before and after the improvement of freeze-thaw cycle for comparative analysis. Improvement mechanism of ionic curing agent on gangue waste using Fourier transform infrared spectroscopy. The results show that the ionic curing agent modified gangue is less affected by freeze-thaw cycles, the magnitude of pore size change is reduced, and the percentage of large pore size is reduced; Ionic curing agents were identified to increase hydride generation and improve the overall stability of gangue wastes.

Copyright
© 2025 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial 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 license and indicate if changes were made.

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Volume Title
Proceedings of the 2024 6th International Conference on Hydraulic, Civil and Construction Engineering (HCCE 2024)
Series
Atlantis Highlights in Engineering
Publication Date
13 June 2025
ISBN
978-94-6463-726-7
ISSN
2589-4943
DOI
10.2991/978-94-6463-726-7_50How to use a DOI?
Copyright
© 2025 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial 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 license and indicate if changes were made.

Cite this article

risenwbib
TY  - CONF
AU  - Taofeng Zhao
AU  - Jianjun Zhang
PY  - 2025
DA  - 2025/06/13
TI  - Study on Pore Size Characteristics of Coal Gangue Waste Modified by Ionic Curing Agent under Freeze-thaw Effect
BT  - Proceedings of the 2024 6th International Conference on Hydraulic, Civil and Construction Engineering (HCCE 2024)
PB  - Atlantis Press
SP  - 513
EP  - 519
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-726-7_50
DO  - 10.2991/978-94-6463-726-7_50
ID  - Zhao2025
ER  -