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This research aims to improve soil consolidation techniques by using expandable drainage systems coupled with intermittent vacuum preloading.

Expandable and straw-woven drains for dredged slurry with intermittent vacuum preloading

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Randomized trial tests the effectiveness of expandable drainage with vacuum preloading, suggesting improved soil consolidation methods.

This research aims to improve soil consolidation techniques by using expandable drainage systems coupled with intermittent vacuum preloading.
Laboratory model tests evaluated the effectiveness of expandable drainage systems with varying radial strain amplitudes.
Straw-woven drains were tested as environmental alternatives to synthetic drains.
The performance was compared to traditional constant vacuum preloading methods.
The proposed method achieved up to 29.5% greater cumulative water discharge compared to conventional methods.
Vane shear strength increased by up to 33.1% under the new method.
Straw-woven drains reached 87.1%–94.5% efficiency compared to synthetic drains despite minor performance reductions.

Geng et al. (2026) studied this question.

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