Experimental Study on the Deterioration Mechanism of Sulfate Erosion of Desert Sand-Manufactured Sand Concrete under Dry-Wet Cycling Conditions

DOI

10.2991/978-94-6463-726-7_58How to use a DOI?

Keywords

desert sand; mechanism sand; wet-dry cycle; sulfate erosion; concrete durability; pore structure

Abstract

Concrete as a widely used construction material, exhibits particular importance in terms of durability under extreme environmental conditions, especially under the effects of wet-dry cycles and sulfate corrosion. This study focuses on concrete made from various proportions of desert sand and manufactured sand, investigating its durability and deterioration mechanisms under wet-dry cycles and sulfate corrosion. The experimental results indicate that wet-dry cycles induce the expansive effect of sulfate crystal formation, leading to concrete cracking and mass loss. The incorporation of an optimal amount of desert sand (DSDS25-MS75) enhances the particle gradation, improves concrete densification, reduces pore expansion, and minimizes crack connectivity, thus exhibiting superior resistance to corrosion. However, higher proportions of desert sand result in increased porosity, exacerbating structural deterioration. Nuclear magnetic resonance (NMR) analysis reveals that an optimal amount of desert sand helps inhibit changes in pore structure, thereby delaying the deterioration process. This study provides a theoretical basis for the durability of desert sand-manufactured sand concrete under extreme environmental conditions.

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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TY  - CONF
AU  - Yanzhong Bu
AU  - Li Gong
AU  - Chunling Jin
AU  - Tengteng Yang
AU  - Xuehao Zhao
AU  - Tianle Xu
PY  - 2025
DA  - 2025/06/13
TI  - Experimental Study on the Deterioration Mechanism of Sulfate Erosion of Desert Sand-Manufactured Sand Concrete under Dry-Wet Cycling Conditions
BT  - Proceedings of the 2024 6th International Conference on Hydraulic, Civil and Construction Engineering (HCCE 2024)
PB  - Atlantis Press
SP  - 585
EP  - 593
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-726-7_58
DO  - 10.2991/978-94-6463-726-7_58
ID  - Bu2025
ER  -