1st Scientific Colloquium - Large Scale Testing (Linking Research and Industry)

Session

Modelling

Sep 15, 2026, 2:00 PM

Geb. 40.50 (Engler-Bunte Hörsaal) (KIT Campus Süd)

12. Semi-Technical Scale Experiments and Digital Twins for Bentonite-Based Shaft Seals

Thomas Nagel (TU Bergakademie Freiberg)

9/15/26, 2:00 PM

Modelling

Modelling

This contribution highlights research conducted on sealing elements for underground repositories, with a focus on bentonite-based barrier systems for shaft and drift sealing. A central challenge in this field is the reliable transfer of laboratory-scale material data to full-scale repository applications. While in-situ experiments provide valuable insights, their limited controllability of...

37. Finding a generalized compaction model for 19 oedometric tests on granular salt

Mara Tews (BGR Hannover)

9/15/26, 2:20 PM

Modelling

Modelling

For the final disposal of radioactive waste in salt formations, researchers are examining not only the stabilizing function of granular salt as a backfill material but also its ability to act as a barrier against incoming and outgoing fluids.
The time required to compact initially loose granular salt into an impermeable backfill is foremost determined by the on-site rate of cavity...

43. GPU-accelerated SPH study of large-scale debris flow impact and overflow on dual barriers

Mr Hongcheng Jiao (Institute of Geotechnical Engineering, BOKU University)

9/15/26, 2:40 PM

Modelling

Modelling

Debris flows are among the most destructive geohazards owing to their high impact force, complex rheology, and pronounced scale-dependent behavior. In practical hazard mitigation, dual or multiple barriers are frequently installed in series to intercept large-volume debris flows through a cascading process of momentum reduction and energy dissipation. Although large-scale physical experiments...

18. Critical State Behaviour of Coarse Granular Materials: NorSand Calibration from Large-Scale Triaxial Testing

Chang-Gyun (CJ) Jeong (BGC Engineering Inc.)

9/15/26, 3:00 PM

Modelling

Modelling

While critical state soil mechanics (CSSM) and advanced constitutive models, such as NorSand, have been widely applied to natural soils and tailings, their extension to coarser grained materials such as rockfill and mine waste rock has not been comprehensively evaluated. This limitation is important for the analysis and design of large geotechnical structures, where design decisions are often...