AERODYNAMIC METHOD OF DETECTION OF SPECIFIC SURFACE OF CONDENSED PHASE, SPECIFIC SURFACE OF SOLID PHASE AND POTENTIAL OF MOISTURE OF POROUS MATERIALS Russian patent published in 2015 - IPC G01N15/08 

FIELD: measurement equipment.

SUBSTANCE: measurement is carried out according to the principle of air oozing via a porous material with available porosity and moisture. A sample of available length and volume is placed into a device providing for measurement of difference of pressures at its inlet and outlet and volume of air leaking via the sample in the stationary mode under pressure close the atmospheric one. On the basis of measured porosity, moisture, difference of pressures between ends of the sample and time of leaking of the measured volume of air they calculate specific surface of condensed phase, specific surface of the solid phase and potential moisture of homogeneous porous material according to formulas. At the same time measurement of physical values included into the formula, such as volume of gas flowing via the sample, time of gas flowing, pressure difference, is carried out on the same samples of porous materials.

EFFECT: increased accuracy of detection of specific surface of solid phase, specific surface of condensed phase, potential of moisture of homogeneous porous materials.

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