Portable compact net-independent rheometer for fresh concrete.
The eBT-V allows two different measuring modes:
The eBT-V measures the force on a shear body, which is moved through the concrete. The device rotates on a fixed shaft which is
mounted in the center of the specimen container. A maximum of one revolution (360°) is used to measure only in non-sheared
concrete. The speed profile is freely programmable. The force on the shear body is measured as a function of the shear rate. The
specimen container is available with the volume of 20 l and 40 l.
The eBT-V is fixed on the device holder. The Vane geometry, also known as a star or wing geometry, is attached on the drive shaft.
The specimen container with the volume of 15 liters is filled with concrete. The device holder with the antislip rods is placed into the
specimen container. A shear profile can be freely defined. The eBT-V measures the torque on the Vane geometry as a function of
the speed. According to Bingham the plastic viscosity and the yield stress are calculated from the angular velocity and the measured
The power unit and the electronics are operated with battery for a network independent operation. The package contains rechargeable
battery NiMH, battery charger, Android Smartphone incl. case, charger and software for device operating and for reading the data.
Data transmission is via Bluetooth (R). The raw data and the data analysis will be exported as Excel files (*.XML).
Particularly suitable for modern concretes such as SCC and UHPC up to max. grain size of 32 mm.