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Geotechnics

Geotechniekvo.be

Geotechnics

Geotechnics

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

Partners

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 dov.vlaanderen.be

Databank Ondergrond Vlaanderen

Projects

BAM test excavation

An extensive test campaign is currently ongoing for the construction of the Oosterweelverbinding in Antwerp. Together with BAM, the company Denys and BBRI, our division is examining the characteristics of the soil to a great depth. Vibration and piling-driving testing have already been completed. The monitoring of a test excavation to 25 metres depth is nearly finished. The results will be reported after a thorough analyses.

BAM proefput

Publications

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.

Effect of initial fabric on the undrained response of clean Chlef sand

Different soil reconstitution methods lead to samples with different initial structure. This paper presents a laboratory investigation which aims to study the influence of initial fabric of specimens on the undrained behavior of clean Chlef sand subjected to triaxial compression tests. The samples tested were prepared at three level of relative densities using different deposition methods, i.e., the layered dry deposition (LDD), the tapped funnel deposition (TFD), the water deposition (WD) and the moist deposition (MD), and they were consolidated under different confining pressures.