Expertise & Performance Spectrum

Expertise Performance Spectrum Automatic 3D and Distance Measuring Systems Levelling Systems Reflectors and Marking Material Extensometers and Axial Borehole Displacements / Joint and Crack Displacements Inclinometers and Tilt Sensors Strain Meters and Pressure Cells Anchor Load Cells and Measuring Anchors Piezometers and Water Level Sensors Temperature Measurements Vibration and Noise Measurements Data Acquisition Surveying Software Geotechnical Evaluation Software Information Systems and Data Management

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Hydraulic Pressure Cell

Highlights
Stresses are displayed directly without conversions
Different arrangements for adaptation to the specific technical and geometric requirements
Model that can be re-tensioned and re-injected to overcome the shrinkage gap in concrete and shotcrete
Electrical read-out only – human error excluded
Suitable for automatic data acquisition

Field of Application

Pressure cells are deployed where stress must be measured inside concrete or shotcrete parts, in embankments and dams and also at contact surfaces such as between embankments and subsoil or shotcrete and rock surface. The results show the stress on the construction components, or forces acting at the contact surfaces between different materials.

Pressure cell for determining the contact stress between ground and shotcrete-shell (in combination with strain meters)

When measuring inside concrete or shotcrete, it must be ensured that shrinkage or creep does not introduce errors in the measurement. “Re-tensioning” the transducers or applying pressure afterwards to eliminate the shrinkage gap are effective methods for largely compensating for these errors.