Dissipation Behavior of Excess Pore Water Pressure in Sand Mat using Dredged Soil

Authors

  • K. ODA
  • M.S LEE

Keywords:

Dredged Soil, Sand Mat, Model Test, Excess Pore Water Pressure, Pressure Head

Abstract

The design of sand mat should be reviewed by behavior of excess pore pressure which is obtained by combining characteristics of soft ground with the permeability of sand mat. In this paper, in order to investigate the distribution of hydraulic gradient of sand mat, a banking model test was performed using dredged sand as materials of sand mat, and these results were compared by the numerical analysis results utilizing Terzaghi's consolidation equation. As the results, it shows that the pore pressure was influenced by the settlement increasing in the center area of sand mat as the height of embankment increases, and uprising speed of excess pore pressure due to residing water pressure is delayed comparing with the results of numerical analysis. Sand mats should be laid to reduce the increased hydraulic gradient at the central part of the embankment.

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Published

2012-12-31

How to Cite

K. ODA, & M.S LEE. (2012). Dissipation Behavior of Excess Pore Water Pressure in Sand Mat using Dredged Soil . GEOMATE Journal, 3(6), 351–356. Retrieved from https://geomatejournal.com/geomate/article/view/1640