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Bridges, quay walls, dikes, tunnels, they must be sustainable, economical and safe. This requires an appropriate investigation of the subsoil. The Geotechnics Division (GEO) has the task of investigating the nature and characteristics of the soil and to predict its behaviour. Geotechnical tests and measurements are carried out in the field and in the laboratory to investigate nature, stratification and characteristics of the soil. Our division invests in innovative technologies such as advanced testing and online monitoring.

Geotechnics corporate video

"She is so ingenious, the earth. Capable of mobilizing her particles to masses, to operas and symphonies of mud and subsidences and slides, … "

- From “While the gods were sleeping” by Erwin Mortier


GEO is one of the 3 partners of the Database of the subsoil of Flanders (DOV). This project valorizes the geotechnical, geological, geothermal, hydrological and pedological data in Flanders. The data collected on the soil in Flanders are made available free of charge. DOV opts for an open data policy and operates in accordance with Flemish decrees and international agreements. You can find more info at

Databank Ondergrond Vlaanderen



The construction of the Deurganckdock lock is one of the largest building sites currently being worked on in Belgium. In order to draw up the design, a comprehensive testing program was conducted by the Geotechnics Division. Geotechnical design calculations were also made, with particular attention paid to the swell of the Boom clay. We are also closely involved with the execution of the project. Geotechnical follow up of activities on the site linked with an intensive monitoring program for the estimation of the swell of the Boom Clay, was a challenge.




T1 formulier

One-dimensional consolidation of overconsolidated clay using Constant Rate of Strain testing

The main method for the determination of consolidation parameters in Flanders is still the incremental loading test (IL test). This method can take up to several weeks for some typical Flemish overconsolidated (OC) clays. In theory, the same relationship between settlement and vertical stress can be obtained by performing a constant rate of strain test (CRS test).

Calibration of DEM material parameters to simulate stress-strain behavior of unsaturated soils during uniaxial compression

Discrete element method (DEM) is an appealing technique to simulate soil deformation. However, the calibration of the material parameters in the model remains challenging due to the high computational cost associated with it. In this study, the stress-strain relation of 125 unsaturated soil samples was simulated using DEM and material parameters were calibrated with Kriging.