Method and equipment to perform porosimetric analyses

Details Method and equipment to perform porosimetric analyses Method and equipment to perform porosimetric analyses

1985-06-10

1987-02-24

Yasich, Daniel M.

Measuring and testing

With fluid pressure

Porosity or permeability

734321, G01N 1508

Patent

active

046447792

ABSTRACT:
A method for performing porosimetric analyses and apparatus therefor are disclosed. In particular, a method for performing porosimetric anaylses by the so-called mercury method is disclosed, wherein volumetric variations of mercury placed in a vessel are recorded. These variations are due to mercury penetration into the pores of a solid sample placed in the vessel under the mercury pressure variations. In the method disclosed, additional porosimetric information is obtained by reducing the pressure from a maximum value as a predetermined function of time. For example, the pressure reduction can be at a constant rate. Simultaneously, volume variations of the mercury exiting the sample pores are detected as the pressure decreases. This additional detection, when performed in relation to and/or in addition to the traditional measurement during pressure increase, provides a pressure/volume mercury curve which gives further data on the porosimetric characteristics of the sample, in particular related to the shape of the pores in the sample.

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IEEE Standard Dictionary of Electrical and Electronic Terms, 2nd Ed., May 12, 1978, F. Jay-Editor; pp. 171, 178, (1977), Au246.

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