Experimental and Theoretical Investigation on the Strength of Sand-Mixing Consolidated Silt Considering Sand Content and Salt Corrosion

DOI

10.2991/978-94-6463-847-9_7How to use a DOI?

Keywords

Strength; Salt corrosion; Variable-order fractional model; Solidified silt

Abstract

In the eastern coastal area of Zhejiang, dredger fill silt soil is widely distributed. To address the issue that vacuum preloading can hardly rapidly enhance the bearing capacity of silt soil foundations, a method of using curing agents to reinforce the marine - deposited silt foundations in coastal areas is proposed. To explore the influence of sand particles on the strength and salt erosion resistance of consolidated silt in coastal areas, a series of samples with different sand contents are prepared and subjected to unconfined compressive strength tests and sulfate erosion tests, respectively. The experimental results show that the liquid limit, plastic limit and plasticity index of consolidated silt present a negative relation with respect to the content of sand at the same concentration of sodium sulfate solution. The strength of consolidated silt soaked in distilled water or sodium sulfate decreases, and the increase of sodium sulfate solution concentration leads to a greater strength loss rate. The optimal sand content for such muck under the experimental conditions is between 15% and 20%. Moreover, the variable-order fractional model is employed to theoretically demonstrate the phenomenon.

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  - Jiangong Yang
AU  - Wei Lu
PY  - 2025
DA  - 2025/09/23
TI  - Experimental and Theoretical Investigation on the Strength of Sand-Mixing Consolidated Silt Considering Sand Content and Salt Corrosion
BT  - Proceedings of the 2025 6th International Conference on Urban Construction and Management Engineering (ICUCME 2025)
PB  - Atlantis Press
SP  - 53
EP  - 63
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-847-9_7
DO  - 10.2991/978-94-6463-847-9_7
ID  - Yang2025
ER  -