Effects of Dry-Wet and Freeze-Thaw Cycles on the Mechanical Properties of Silt Stabilized with Nano-Silica and Lime

ZHENG Shijie; TANG Chunyang; WEN Quan; LIU Wenhao; ZHANG Yanmei

doi:10.3724/j.gyjzG24082301

Volume 56 Issue 4

Apr. 2026

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Article Navigation > INDUSTRIAL CONSTRUCTION > 2026 > 56(4): 208-216

ZHENG Shijie, TANG Chunyang, WEN Quan, LIU Wenhao, ZHANG Yanmei. Effects of Dry-Wet and Freeze-Thaw Cycles on the Mechanical Properties of Silt Stabilized with Nano-Silica and Lime[J]. INDUSTRIAL CONSTRUCTION, 2026, 56(4): 208-216. doi: 10.3724/j.gyjzG24082301

Citation:

ZHENG Shijie, TANG Chunyang, WEN Quan, LIU Wenhao, ZHANG Yanmei. Effects of Dry-Wet and Freeze-Thaw Cycles on the Mechanical Properties of Silt Stabilized with Nano-Silica and Lime[J]. INDUSTRIAL CONSTRUCTION, 2026, 56(4): 208-216. doi: 10.3724/j.gyjzG24082301

Citation:

ZHENG Shijie, TANG Chunyang, WEN Quan, LIU Wenhao, ZHANG Yanmei. Effects of Dry-Wet and Freeze-Thaw Cycles on the Mechanical Properties of Silt Stabilized with Nano-Silica and Lime[J]. INDUSTRIAL CONSTRUCTION, 2026, 56(4): 208-216. doi: 10.3724/j.gyjzG24082301

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Effects of Dry-Wet and Freeze-Thaw Cycles on the Mechanical Properties of Silt Stabilized with Nano-Silica and Lime

doi: 10.3724/j.gyjzG24082301

1. China Communications First Highway Engineering Group Huazhong Engineering Co., Ltd., Wuhan 430000, China;
2. College of Pipeline and Civil Engineering, China University of Petroleum (Huadong), Qingdao 266580, China

Received Date: 2024-08-23
Available Online: 2026-06-06
Publish Date: 2026-04-20

Abstract

Abstract

The influence of natural environmental effects on the strength of silt improved by nano-silica and lime was studied through a series of tests of dry-wet， freeze-thaw， and dry-wet and freeze-thaw coupling. Through electron microscopy scanning experiments， the microstructure of improved silt under the action of natural environment was analyzed. The results showed that the axial stress-strain relationship of the improved silt exhibited obvious brittle failure characteristics under the action of different cyclic modes， such as dry-wet， freeze-thaw， and dry-wet and freeze-thaw coupling， etc. ， the axial strain （failure strain） corresponding to the peak stress was between 1.0% and 1.5%. Except for the first cycle， the strength of the improved silt decreased with the increase of the number of cycles and tended to be stable gradually under the action of different cycles. The reducing effect of freeze-thaw cycles on the strength of improved silt was greater than that of dry-wet cycles， and the reducing effect of freeze-thaw cycles on the strength of improved silt was strengthened when the two cycles were coupled. Dry-wet and freeze-thaw cycles reduced the cohesion of improved silt， but the decrease of internal friction angle was mainly affected by dry-wet cycles. The dry-wet and freeze-thaw cycles damaged the soil structure， leading to an increase in the proportion of medium and large pores in the soil， which is the main reason for the deterioration of soil strength. The improved silt met the strength requirements of the railway embankment fillers under different cycling modes， and the improved silt with nano-silica and lime had a strong capacity to resist the influence of environmental factors.
- nano-silica and lime,
- silt from the Yellow River Flood Area,
- dry-wet cycle,
- freeze-thaw cycle,
- deterioration mechanism

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References(25)

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