Mercury intrusion porometry

Surface area Porosity (pore size, volume, and distribution) BET method (Brunauer, Emmett, and Teller method) Physical gas sorption Chemical gas sorption Helium picnometry Mercury intrusion porometry (MIP)... 

Characterising the porous structure of Egyptian mortars using thermoporometry, mercury intrusion porometry and gas adsorption manometry... 

In the present study we have had access to various mortars obtained from the Sphinx and the Kephren Valley Temple. The characterisation of the porous structure of these mortars was carried out using thermoporometry, mercury intrusion porometry and gas adsorption. The aim of this communication is to discuss the relevance of these techniques to the study of Egyptian mortars and to compare the superposition of the results thus obtained. 

Mercury intrusion requires very high pressures, which may significantly distort the pore structures of nonwovens. The mercury intrusion porometry method (ASTM D4404) is considered environmentally problematic because of the use of mercury (Tu et al., 2002). 

Scaffold porosity and information on the pore size distribution can be obtained from intrusion techniques. The most commonly used methods are mercury porosimetry and capillary flow porometry. In mercury porosimetry the pressure required to fill a tissue scaffold with non-wetting mercury is monitored over a set period of time. Higher pressures are required to fill small pores than large pores a fact that can be exploited using the Washburn equation13 to extract structural information where D is the diameter of the pore at a particular differential... 

Figure 5 compares the pore size distributions of the scaffold computed from the intrusive techniques of capillary flow porosimetry and mercury porometry. From this figure it is apparent that the range of pore sizes derived from capillary flow porometry occurs over a smaller length scale than those based on mercury porometry data. This difference is expected since underlying physics of the... 

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