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Solidification Mechanism and Water Stability of Dredged Silt
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Wei LU1, Fei LI2, 3, Jin-an WANG1, 2, 3, Yan-nan SHI4, 5, *
Science Technology and Engineering | 2025, 25(21) : 9052 - 9060
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Science Technology and Engineering | 2025, 25(21): 9052-9060
• Papers·Architectural Science •
Solidification Mechanism and Water Stability of Dredged Silt
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Wei LU1, Fei LI2, 3, Jin-an WANG1, 2, 3, Yan-nan SHI4, 5, *
Affiliations
  • 1 Tianjin College, University of Science and Technology Beijing, Tianjin 301830, China
  • 2 School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China
  • 3 State Key Lab of Education Ministry for High Efficient Mining and Safety of Metal Mines, University of Science and Technology Beijing, Beijing 100083, China
  • 4 Zhejiang Institute of Hydraulics & Estuary, Hangzhou 310020, China
  • 5 Zhejiang Provincial Key Laboratory of Water Conservancy Disaster Prevention and Mitigation, Hangzhou 310020, China
Published: 2025-07-28 doi: 10.12404/j.issn.1671-1815.2407853
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With the implementation of river dredging projects in China, a large amount of dredged silt has been generated. The treatment and disposal of silt have gradually attracted great attention. Using solidification technology is one of the effective ways to solve the problems caused by dredged silt. Taking the dredged silt from Beibaidang in Zhejiang as the research object, the solidified products were analyzed through X-ray diffraction (XRD), and the porosity and pore structure of the solidified silt soil were quantitatively analyzed by means of X-ray computed tomography (X-CT) and mercury intrusion porosimetry (MIP) tests. Meanwhile, it explores the mechanical variation laws and solidification mechanism of the soil under soaking and dry-wet cycling conditions. The research shows that the calcite content in the solidified soil increases with the increase of the solidifying agent dosage. The increase of ordinary sand dosage improves the small and medium-sized porosity inside the soil, but the overall porosity shows a decreasing trend. The results of water stability tests indicate that the strength and stability of the solidified silt soil are significantly improved with the increase of the solidifying agent content, and they first increase and then decrease with the increase of sand dosage.

silt  /  solidified soil  /  porosity  /  water stability
Wei LU, Fei LI, Jin-an WANG, Yan-nan SHI. Solidification Mechanism and Water Stability of Dredged Silt[J]. Science Technology and Engineering, 2025 , 25 (21) : 9052 -9060 . DOI: 10.12404/j.issn.1671-1815.2407853
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Year 2025 volume 25 Issue 21
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Article Info
doi: 10.12404/j.issn.1671-1815.2407853
  • Receive Date：2024-10-22
  • Online Date：2026-01-13
  • Published：2025-07-28
Article Data
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History
  • Received：2024-10-22
  • Revised：2025-04-16
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Affiliations
    1 Tianjin College, University of Science and Technology Beijing, Tianjin 301830, China
    2 School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China
    3 State Key Lab of Education Ministry for High Efficient Mining and Safety of Metal Mines, University of Science and Technology Beijing, Beijing 100083, China
    4 Zhejiang Institute of Hydraulics & Estuary, Hangzhou 310020, China
    5 Zhejiang Provincial Key Laboratory of Water Conservancy Disaster Prevention and Mitigation, Hangzhou 310020, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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