Permeability Testing

Permeability Testing

In-house construction of the IMWS-laboratory

Specifications:

  • Test chamber, steel, interior dimensions: 240/240/100 mm
  • Pressure pistons (Fa. Festo): 2 x DN 80 mm, 1 x DN 125 mm
  • Measurement devices: 3 x pressure sensors (Fa. HBM), 1 x displacement sensor (200mm, Fa. HBM)
  • Data logging: MGCplus (Fa. HBM)
  • Control, data recording: standard PC
  • Volume of machine: 5.0 l
  • Additional reservoir: 20.8 l
  • Max. operating pressure: 10 bar
  • Max. dimensions of specimen: DN 150 mm, height: 50 mm

Application:

  • Determination of the permeability of concrete, cement paste, and other porous media
The left picture shows in a principle sketch the transport of the gas from the gas storage via several pressure valves and pressure measuring devices to the test chamber.
The right picture is a photo of this experimental setup and shows the gas supply, the pressure valves, the pressure measuring devices, the test chamber as well as the computer for disturbing the experimental setup.