The technique involves the intrusion of a non-wetting liquid (often mercury) at high pressure into a material through the . Mercury Intrusion Porosimetry Theory. Presented by Micromeritics Instrument Corporation. Cross-section of a drop of non-wetting liquid resting on a solid surface.

All interfaces are shown. Liquids resting on a solid surface.

The different angles of contact are illus- trated for wetting and non-wetting liquids. To perform an analysis, the sample is loaded into a penetrometer, which consists. Quantachrome offers instruments for determining pore size by gas adsorption, mercury porosimetry and capillary flow . The instrument, known as a porosimeter , employs a pressurized chamber to force mercury to intrude into the . Author: Josef Kaufmann. The determination of pore size following the technique of mercury intrusion is based on the behavior of “non- wetting” liquids in capillary. A liquid coming in contact with a solid porous material and behaving as a non.

One potential difficulty in comparing porosity data sets obtained in the smaller size range by mercury porosimetry with data gathered in the same range by gas sorption (BET) is that sample compression is a possibility with mercury porosimetry.

If sample compression occurs, an apparent uptake of mercury is superimposed . Surfer applies the principle of static volumetric gas adsorption under controlled conditions of temperature and pressure to determine micro structural properties of solids and powders. Pores between about 5lm and 3. During a typical porosity analysis in a mercury porosimetry analyzer, a higher pressure is needed to force intrusion of . J Colloid Interface Sci. Ink-bottle effect in mercury intrusion porosimetry of cement-based materials.

A com- plete analysis may take as little as half an hour of analy- sis time. The conditions that must be met for mercury intrusion porosimetry (MIP) measurements to provide valid estimates of the pore size distribution of porous solids are reviewed. Evidence is presented indicating that these conditions are not satisfied in cement-based systems. In cement systems, nearly all of the mercury intrusion . The mercury intrusion porosimetry technique is one of the most useful methods to investigate the porous structure of solid samples in a quantitative way. APPLICATIONS OF THE WASHBURN.

The experimental method employed in mercury porosimetry , discussed more extensively in Chapter 2 involves the evacuation of all gas from the volume containing the sample. A new chapter in mercury porosimetry starts with the Pascal system. The mercury porosimetry technique is one of the most useful methods to investigate the porous structure of solid samples in a quantitative way.