Porous Media Characterization Using Mercury Porosimetry Simulation. 2. An Iterative Method for the Determination of the Real Pore Size Distribution and the Mean Coordination Number

2001 ◽  
Vol 40 (22) ◽  
pp. 4836-4843 ◽  
Author(s):  
V. G. Mata ◽  
J. C. B. Lopes ◽  
M. M. Dias
Keyword(s):  
Porous Media ◽  
Iterative Method ◽  
Pore Size Distribution ◽  
Pore Size ◽  
Size Distribution ◽  
Coordination Number ◽  
Mercury Porosimetry ◽  
The Real ◽  
The Mean

THE DETERMINATION OF PORE SIZE DISTRIBUTION AND SURFACE AREA FROM ADSORPTION ISOTHERMS

1955 ◽  
Vol 33 (2) ◽  
pp. 215-231 ◽  
Author(s):  
E. M. Voigt ◽  
R. H. Tomlinson
Keyword(s):  
Pore Size Distribution ◽  
Pore Size ◽  
Size Distribution ◽  
Surface Area ◽  
Pore Radius ◽  
Weighted Average ◽  
Vycor Glass ◽  
Porous Vycor Glass ◽  
The Mean

Theoretical isotherms have been developed which when compared to experimental isotherms showing hysteresis, allow the calculation of pore size, pore size distribution, and surface area of the sorbent. Interpretation of some experimental isotherms obtained with porous vycor glass shows that this system can best be represented by the "ink bottle" pore model with a Gaussian distribution of pore sizes. The mean pore radius of the porous glass is about two thirds of the Kelvin radius, and the surface area greater than that obtained from the B.E.T. theory. The Kelvin radius is interpreted as a weighted average, but the B.E.T. surface area appears more fundamentally different.

Effect of porous structure on the determination of pore size distribution by mercury porosimetry and nitrogen sorption

Langmuir ◽  
1991 ◽  
Vol 7 (4) ◽  
pp. 779-785 ◽  
Author(s):  
Giorgio. Zgrablich ◽  
S. Mendioroz ◽  
L. Daza ◽  
J. Pajares ◽  
V. Mayagoitia ◽  
...  
Keyword(s):  
Porous Structure ◽  
Pore Size Distribution ◽  
Pore Size ◽  
Size Distribution ◽  
Mercury Porosimetry ◽  
Nitrogen Sorption

scholarly journals Pore Size Distribution in Chicken Eggs as Determined by Mercury Porosimetry

2000 ◽  
Vol 2 (2) ◽  
pp. 177-181 ◽  
Author(s):  
N La Scala Jr ◽  
IC Boleli ◽  
LT Ribeiro ◽  
D Freitas ◽  
M Macari
Keyword(s):  
Pore Size Distribution ◽  
Pore Size ◽  
Size Distribution ◽  
Mercury Porosimetry ◽  
Chicken Eggs

In this study we investigated the application of mercury porosimetry technique into the determination of porosity features in 28 week old hen eggshells. Our results have shown that the majority of the pores have sizes between 1 to 10 mu m in the eggshells studied. By applying mercury porosimetry technique we were able to describe the porosity features better, by determining a pore size distribution in the eggshells. Here, we introduce mercury porosimetry technique as a new routine technique applied into the study of eggshells.

Effect of Reactive-Al2O3 Addition on the Pore Size Distribution and Thermal Conductivity of Carbon Blocks for Blast Furnace

2010 ◽  
Vol 97-101 ◽  
pp. 453-456 ◽  
Author(s):  
Xi Lai Chen ◽  
Ya Wei Li ◽  
Yuan Bing Li ◽  
Shao Bai Sang ◽  
Lei Zhao
Keyword(s):  
Thermal Conductivity ◽  
Blast Furnace ◽  
Pore Size Distribution ◽  
Pore Size ◽  
Size Distribution ◽  
Mercury Porosimetry ◽  
X Ray Diffraction ◽  
X Ray ◽  
Sic Whiskers ◽  
The Mean

The effect of reactive-Al2O3 addition on the pore size distribution and thermal conductivity of carbon blocks for blast furnace was investigated by using X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray, mercury porosimetry, and a laser thermal conductivity meter. The results showed that the pore size distribution and the thermal conductivity of carbon block were mainly influenced by SiC whiskers and reactive-Al2O3. With increasing addition of reactive-Al2O3, the mean pore diameter reduced and < 1μm pore volume increased of open pores owing to the more efficient filling of pores by SiC and reactive-Al2O3, and the thermal conductivities of samples increased due to the facts that the higher thermal conductivity of reactive-Al2O3 than that of brown corundum and the more formation amount of high thermal conductivity of SiC.

Improved design and protocol for evapoporometry determination of the pore-size distribution

2015 ◽  
Vol 496 ◽  
pp. 334-343 ◽  
Author(s):  
Ebrahim Akhondi ◽  
Farhad Zamani ◽  
Jia Wei Chew ◽  
William B. Krantz ◽  
Anthony G. Fane
Keyword(s):  
Pore Size Distribution ◽  
Pore Size ◽  
Size Distribution ◽  
Improved Design

scholarly journals Study on the Mechanical Criterion of Ice Lens Formation Based on Pore Size Distribution

2020 ◽  
Vol 10 (24) ◽  
pp. 8981
Author(s):  
Yuhang Liu ◽  
Dongqing Li ◽  
Lei Chen ◽  
Feng Ming
Keyword(s):  
Pore Size Distribution ◽  
Pore Size ◽  
Water Content ◽  
Size Distribution ◽  
Initial Water Content ◽  
Mean Stress ◽  
Initial Water ◽  
Unfrozen Water Content ◽  
The Mean ◽  
Lens Formation

Ice lens is the key factor which determines the frost heave in engineering construction in cold regions. At present, several theories have been proposed to describe the formation of ice lens. However, most of these theories analyzed the ice lens formation from a macroscopic view and ignored the influence of microscopic pore sizes and structures. Meanwhile, these theories lacked the support of measured data. To solve this problem, the microscopic crystallization stress was converted into the macro mean stress through the principle of statistics with the consideration of pore size distribution. The mean stress was treated as the driving force of the formation of ice lens and induced into the criterion of ice lens formation. The influence of pore structure and unfrozen water content on the mean stress was analyzed. The results indicate that the microcosmic crystallization pressure can be converted into the macro mean stress through the principle of statistics. Larger mean stress means the ice lens will be formed easier in the soil. The mean stress is positively correlated with initial water content. At the same temperature, an increase to both the initial water content and the number of pores can result in a larger mean stress. Under the same initial water content, mean stress increases with decreasing temperature. The result provides a theoretical basis for studying ice lens formation from the crystallization theory.

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