University of Twente Student Theses


Research on internal suffosion and fluidization of glass beads

Jansen, J.J. (2014) Research on internal suffosion and fluidization of glass beads.

[img] PDF
Abstract:Dams, levees and oodwalls build on permeable sandy soil can be susceptible to failure due to seepage under the structure. This failure can take the form of internal suffosion and uidization. To increase our understanding of these phenomena laboratory tests on homogeneous glass beads are performed at the Laboratory of Water Structures at the Faculty of Civil Engineering of the Brno University of Technology. In this thesis the currently existing methods to determine the initiation criteria for soil failure due to seepage are compared to the laboratory test results. Methods derived by Terzaghi, Knorre and Zamarin failed to correctly identify the criteria for failure in glass beads. Istominas theory for determining the critical hydraulic gradient approx- imates the measured critical gradient, but fails to explain the difference in critical gradient for different grain sizes. Experimental results indicate that grain size also in uences the criteria for failure. Finally a method for testing the criteria for failure in non-uniform mixtures of glass beads is proposed.
Item Type:Essay (Bachelor)
Faculty:ET: Engineering Technology
Subject:56 civil engineering
Programme:Civil Engineering BSc (56952)
Link to this item:
Export this item as:BibTeX
HTML Citation
Reference Manager


Repository Staff Only: item control page