THE EFFECT OF INCREMENTAL CONFINING PRESSURE ON THE HYDRAULIC PROPERTIES OF PVD

Authors

  • Galuh Chrismaningwang
  • Hary Christady Hardiyatmo
  • Agus Darmawan Adi
  • Teuku Faisal Fathani

Keywords:

Discharge capacity, Transmissivity, Hydraulic Gradient, Geosynthetic drain

Abstract

Prefabricated Vertical Drains (PVD) has become a standard method in soft soil improvements
project to accelerate the soil consolidation time. Due to PVD’s primary function as drainage, it should have
adequate hydraulic properties, i.e., discharge capacity and transmissivity. This paper evaluates the effect of
incremental confining pressure on three types of PVD using an apparatus adopting ASTM D4716, a mechanism
to determine the in-plane flow rate and transmissivity of geosynthetics. The apparatus is originally designed to
observe the discharge capacity of the PVD. Three types of PVD with different thickness and box channel core
shapes were tested under incremental confining pressure in the range of 50 to 200 kPa and varied hydraulic
gradients. The results indicated that the reduction of discharge capacity under incremental confining pressure
is higher for lower hydraulic gradients, and the reduction of discharge capacity is significant at high confining
pressure. The thickness of PVD held an essential role in transmissivity since PVD with greater thickness
provides higher discharge capacity and transmissivity.

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Published

2020-09-30

How to Cite

Galuh Chrismaningwang, Hary Christady Hardiyatmo, Agus Darmawan Adi, & Teuku Faisal Fathani. (2020). THE EFFECT OF INCREMENTAL CONFINING PRESSURE ON THE HYDRAULIC PROPERTIES OF PVD. GEOMATE Journal, 19(73), 41–48. Retrieved from https://geomatejournal.com/geomate/article/view/1759

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