Permeametric device, for allowing infiltration of naturally porous materials by aggressive chemical solutions, comprises cell with rings for receiving sample and piston to exert pressure on sample

摘要

The device comprises a cell (A) with rings (2) which receives the sample and a piston (3) exerting a pressure (P2) on the sample at the same time as an injection syringe (B) operated by a piston (6) exerting a pressure (P1) independent of the mechanical pressure P2. The cell has a screw-nut system (8) in its lower part which allows the height of the material to be adjusted to the final height of the rings. The injection syringe has a watertight lining (17) containing a polluted solution and a piston where the control fluid is completely independent of the solution to be injected. The injection system is independent of the constraint system holding the material to be studied.