A Pilot Test of Dehydration of Tiver dredged Mud using Vacuum Consolidation with Different Vertical Drains

Authors

  • Huy Dong Phan Faculty of Bridge and Road Engineering, Hanoi University of Civil Engineering, Vietnam
  • Nguyen Binh Phan Faculty of Bridge and Road Engineering, Hanoi University of Civil Engineering, Vietnam
Volume: 14 | Issue: 6 | Pages: 18138-18146 | December 2024 | https://doi.org/10.48084/etasr.8630

Abstract

The combination of vacuum preloading and vertical drains provides an effective approach to the usage of dredged slurry for reclamation. However, the efficacy of this approach in improving soil quality is often impeded by clogging, a prevalent issue that frequently arises in the vicinity of Prefabricated Vertical Drains (PVD) during vacuum preloading. In addition to numerous efforts aimed at improving the performance of vacuum systems, this study conducts a pilot test to explore innovations in vertical drain types, including PVD, Filter Pipes (FP), and Sand Drains (SD). The monitoring data indicate that the use of SD is advantageous in mitigating the effects of clogging and enhancing the performance of vacuum consolidation techniques. Specifically, after 160 days of vacuum operation, the volumetric strains of dredged mud reached approximately 30.2%, 27.1%, and 23.1% for SD, FP, and PVD, respectively. The treated dredged mud exhibited disparate enhancements in physical properties and strength, reflecting the differential impacts of clogging phenomena among the cases of vertical drains.

Keywords:

vacuum consolidation, land reclamation, dredged slurry, vertical drain, clogging effect

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How to Cite

[1]
Phan, H.D. and Phan, N.B. 2024. A Pilot Test of Dehydration of Tiver dredged Mud using Vacuum Consolidation with Different Vertical Drains. Engineering, Technology & Applied Science Research. 14, 6 (Dec. 2024), 18138–18146. DOI:https://doi.org/10.48084/etasr.8630.

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