Geotechnical Lab

 

Contact

Name

Lena-Maria de Vries

Laboratory Management

Phone

work
+49 241 80 96788

Email

E-Mail
 

The LIH has a geotechnical laboratory at its disposal, which we utilize within the scope of teaching, for the supervision of doctoral theses, master and bachelor theses, and for the determination of soil-physical parameters according to DIN/ ISO. In addition, a practical course is held annually, in which experiments to determine soil-physical parameters are introduce and are carried out by the course participants.

Looking into the Future:

At the moment our geotechnical laboratory is in upheaval. Some changes are made and new equipment is purchased.

A climatic chamber that can reach temperatures of -10°C to +30°C and relative humidities of 30% to 95% has already been installed in recent months. In the following weeks, it will eventually be equipped with a triaxial press.
A shearing machine, which is being built by the geotechnical engineering in construction at RWTH Aachen for us, will also enrich our laboratory, so that a variety of shear tests can be carried out.
In addition, a dry and a wet sump are planned, which will expand the laboratory activities in the future.
The room for the dry sump is already equipped with a diamond band saw and will be equipped with a core drilling machine in the next few weeks. By contrast, the wet sump room is planned for the future.

Doctrine

The following soil-physical parameters can be determined with the aid of the tests carried out as part of the teaching:

  • Water content
  • Grain size distribution by sieving
  • Grain size distribution by hydrometer analysis
  • Grain density
  • Yield and roll-out limit
  • Shrinkage limit
  • Water absorbency
  • Lime content
  • Annealing loss
  • Compaction behaviour according to Proctor
  • Compression Behaviour with Obstructed Lateral Stretch
  • Shear strength

Field Instruments

Our field devices offer several possibilities for field tests:

  • Downhole camera for inspection of boreholes
  • Levelling device for measuring height differences
  • Field vane probe for determining the layer-oriented, untrained shear strength in the borehole
  • Guelph permeameter to determine the saturated hydraulic conductivity of the soil
  • Cobra for pile core sounding
  • Ram probe for dynamic probing
  • Pürkhauer and cylindrical cutter for sampling
  • laser scanner to observe deformations on the earth's surface