Using a piezocone (electric probe) has significantly improved the data obtained in static testing both in terms of measurement precision and data sampling frequency.
Pagani piezocones indeed allow the acquisition, during the continuous driving movement, of the qc (bit resistance) and fs (side friction) values at each centimetre of depth compared to the 20 centimetres which can be obtained with mechanical cone (Begemann).
The system also acquires the U value (hydrostatic pore pressure), the angle of the set of rods and the dissipation time (time measured between measurement of the overpressure obtained during the driving stage and the pressure measured when releasing the driving pressure).
Electrical connections and components:
|Tip resistance (qc):||50; 100 MPa||Cone apex angle:||60°|
|Sleeve friction (fs):||1,6 MPa (titanium)||Diameter:||36 mm|
|Pore pressure (U):||2,5 MPa||Section area:||10 cm²|
|Tilt:||0 – 20°||Friction sleeve surface:||150 cm²|
|Tip area factor (a):||0,80||Weight:||2,1 kg|
|Sleeve area factor (b):||0||Length:||413 mm|
The TGAS08 system includes the CPTU-ACQ Software. Key functions: