The gradient permeability consolidation instrument is mainly used for the compression permeability and permeability consolidation coupling test of saturated soil. The step-by-step loading adopts a servo pneumatic cylinder as the vertical load power source, and the permeability head pressure is generated by the cylinder and air compressor. A constant head gradient can be set according to the test needs. The instrument is equipped with vertical pressure load, high-precision pressure gauge (optional force sensor), vertical displacement, and pore water pressure sensor.

This device can also perform tests such as collapsible tests on loess, salt expansion and dissolution tests on saline soil, expansion and contraction tests on expansive soil, and permeability tests on cement soil. Suitable for conducting soil mechanics research in higher education institutions, survey and design degrees, etc.

Optional functions (flow integrator): temperature (℃), pressure (MPa), flow rate (factory Nm ³/h), accumulation (Nm ³/h)