RESEARCH

Geosystems Laboratory

Fundamentals

4
Characterization of unsaturated particulate materials using … Elastic and electromagnetic waves of small perturbation allow the characterization of a particulate material without causing any permanent effects. The physical interpretation of these measurements (i.e., elastic and electromagnetic wave parameters) permits inference with important information …
3
Effect of interparticle friction angle on critical state fri… When Φi is zero, it is not clear whether Φcs is zero or not.
When a test with frictionless particles such as glass particles is performed, it yields a non-zero Φcs value.
Using DEM program, it is possible to set to Φi = 0. In this study, PFC3D (Particle Flow Code in …
2
Nonlinear deformational behavior of rock In Korea, base-rock exists at shallow depth (30~50m).
The measurement of rock mass properties is very important in order to design and construct underground structures, tunnels economically and reliably.
Since nonlinear deformational characteristics are determined by strain level and th…
1
Wave propagation in equivalent continuum jointed rock mass Experimental Characterization of Wave Propagation in Jointed Rock Masses
-Small shear strain (below 10-5%): Quasi-static Resonant Column Test (QSRC)
-Mid to large shear strain (10-5% - 10-2%): Rock Mass Dynamic Test (RMDT)
-Effects of gouge fill material, gouge thickness, grouting te…

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