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.
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
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