Consolidation Stage Setup
You can specify a number of Load increments, each consisting of an undrained schedule followed by by a drained schedule. Load increments are easily added or subtracted and automatically create the associated undrained and drained schedules.
During the undrained schedule, vertical stress is applied to the specimen with the drainage valve closed and the consequent increase in pore water pressure is monitored. This schedule will terminate when the PWP becomes stable.
During the drained schedule, the drainage valve is opened and the specimen is consolidated to a preset back pressure. The vertical stress is maintained until the PWP dissipation reaches the predefined value (95% or greater). The PWP, volume and the settlement reading are monitored during the schedule.
The Coefficient of Consolidation (Cv) can be calculated either from PWP dissipation (t50) or settlement (t50 or t90) as required.