GEOTHERMAL ACTIVATION OF GEOTECHNICAL ELEMENTS USING THE MIXED-IN-PLACE TECHNOLOGY

Mixed-In-Place (MIP) is a deep mixing technology invented by Bauer in the 1990s to execute geotechnical works, e.g., to install retaining walls for construction pits.

With regards to geothermal activation, deep soil mixing is deemed an ideal execution method, due to the beneficial heat transfer from soil to the geothermal probes when fixed to the structural steel beams installed. This patented approach results in a more sustainable overall design, particularly using MIP technology, which can initially reduce carbon emissions by 30% or more compared to traditional alternatives.

The potential for temporary geotechnical elements to provide a permanent geothermal activation seems to be underexploited. In addition to private construction projects, geothermal heat can also be used for large-scale or public projects. Specifically, the approach of low temperature district heating and cooling technology may even widen the potential of geothermal energy. Geotechnical elements, which have been installed for a temporary structural use, can become an integral part of a district-wide system that uses only renewable energy, as well as using the ground as storage to balance the system.