Volume 39 Issue 1
Feb.  2025
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Dong Daowei, Wang Decai, Song Liqiang, Shi Changyuan, Li Jianwei, Dong Zheng, Sun Mingmei, Yao Kai. Jet grouting materials in sandy silt soil layer considering the time-dependent behavior of viscosity[J]. GEOTECHNICAL ENGINEERING TECHNIQUE, 2025, 39(1): 139-149. doi: 10.20265/j.cnki.issn.1007-2993.2024-0007
Citation: Dong Daowei, Wang Decai, Song Liqiang, Shi Changyuan, Li Jianwei, Dong Zheng, Sun Mingmei, Yao Kai. Jet grouting materials in sandy silt soil layer considering the time-dependent behavior of viscosity[J]. GEOTECHNICAL ENGINEERING TECHNIQUE, 2025, 39(1): 139-149. doi: 10.20265/j.cnki.issn.1007-2993.2024-0007

Jet grouting materials in sandy silt soil layer considering the time-dependent behavior of viscosity

doi: 10.20265/j.cnki.issn.1007-2993.2024-0007
  • Received Date: 2024-01-03
  • Accepted Date: 2024-08-29
  • Rev Recd Date: 2024-06-05
  • Publish Date: 2025-02-21
  • Jet grouting technology is widely used in hydraulic engineering, foundation engineering, underground engineering, and deep excavation engineering. However, in fine sandy silt soil strata, conventional cement-based solidifiers result in poor construction quality due to the slurry's tendency to disperse under high pressure. To address this, an efficient rapid-setting material was developed, enabling faster slurry solidification and improved performance in fine sand soils. Based on a theoretical model of jet grouting erosion, a method for calculating slurry diffusion distance that considers viscosity changes over time was proposed. Viscosity tests were conducted on cement-water glass slurries at various ratios, analyzing how viscosity evolved with time. Considering gelation time, material strength, and slurry diffusion distance, the study optimized the mix ratio of cement-water glass rapid-setting materials for fine sand soil layers. The recommended mix ratio was determined to be a water-cement ratio of 1.0 to 1.2 and a volume ratio of 1∶0.1. This research provides references for optimizing rapid-setting slurries for jet grouting applications, offering practical guidance for enhancing construction practices in challenging soil conditions.

     

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