Mercury porosimetry of ceramics

Whittemore, O. J.

doi:10.1016/0032-5910(81)85014-0

Cited by 35 publications

(6 citation statements)

References 13 publications

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“…6,7 Mercury injection porosimetry is a commonly used method for the characterization of porous materials and is widely used in industry. 3,[6][7][8][9][10][11][12][13] This technique allows the characterization of the porosity of different kinds of materials in order to determine the distribution of porosity over the macropore (pore sizes higher than 50 nm) and mesopore (pores of 2-50 nm) range in addition to other important parameters such as total porosity, total volume of mercury intrusion, bulk density, skeletal density, etc. Mercury porosimetry is a very popular technique because it is relatively straightforward to use and also because it can be used to study a wide range of pore sizes between 360 mm to 6 nm.…”

Section: Introductionmentioning

confidence: 99%

The role of crosslinking treatment on the pore structure and water transmission of biocollagenic materials

Gil

Ruíz

Lozano³

et al. 2013

J of Applied Polymer Sci

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The knowledge of the factors involved in the water transmission through collagen fibrous network of skin and leather is essential in the manufacture of materials that will give improved service and maintain a sufficiently high level of breathability and permeability to assure comfort to the wearer. The study of the structure and connectivity of the pores in the skin and leather is essential since it influences the heat and mass transport processes. This research study focuses on the porous structure and water vapor permeability of animal skin after it has been subjected to different treatments, such as pickling or tanning with chromium salts, or vegetable tannins. The obtained data indicated that surface groups, inorganic matter, and pore size distribution have influence on the water transmission. Water vapor adsorption isotherms showed pickled skin to have a greater adsorption capacity at a higher relative humidity, whereas vegetable-tanned leather was found to be the sample with the lowest adsorption at higher relative humidity probably due to its greater density, lower accessibility of the functional groups, and wider distribution of pore sizes than the other materials.

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Section: Introductionmentioning

confidence: 99%

The role of crosslinking treatment on the pore structure and water transmission of biocollagenic materials

Gil

Ruíz

Lozano³

et al. 2013

J of Applied Polymer Sci

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“…The thermal properties of the gases in the straw voids were assumed to be the same as air. To estimate the range of MTCs for oxygen transfer through the render, the porosity of fired earth and clay (reported to lie in the range of 15-35% [12,13]) was used to calculate an effective oxygen diffusion coefficient of 0.1-0.2 times that of stagnant air (using the equation given in [14]). …”

Section: Reaction Ormentioning

confidence: 99%

The fire behaviour of rendered straw bales

et al. 2008

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SUMMARYExperimental and theoretical investigations were conducted on the combustion behaviour of compacted, rendered straw bales exposed to two radiant heat flux regimes-(1) 30 kW m −2 for 30 min and (2) 50 kW m −2 for 40 min. The objective was to examine the fire safety of the rendered straw bales, which are used to construct houses in rural areas or on the urban fringe. The rendered bales were ∼ 950 mm× 450 mm×550 mm in size, comprising a ∼ 45 mm thick render layer on all sides. Two types of render materials-earth-based and lime-based-were tested. The 30 kW m −2 , 30-min regime resulted in little damage to the render layer and no combustion of the straw bale. The 50 kW m −2 , 40-min regime initiated combustion of the straw 24 h after the end of the exposure regime, consuming the entire straw bale over 11 days.A two-dimensional mathematical model describing the heat transfer through the render and the straw, and the combustion of the straw is presented. The kinetic parameters for the pyrolysis and combustion were derived from thermo-gravimetric analysis of the straw. The physical and thermal properties of the render and the straw were obtained from measurements and literature. The model predicted transient temperature profiles within the straw bale. The trends of predicted temperatures compare favourably with the experimental measurements, although aspects of the theoretical predictions of the ignition of the straw could not be reconciled with experimental results. q Commonwealth of Australia 2008.

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“…Mercury porosimetry is one of the basic methods for determining the pore structure parameters of porous materials. With its help, it is possible to determine the actual porosity of the material under study, the distribution of the pore size and surface area, and the specific surface area [17][18][19][20]. The principle of mercury porosimetry that relates pressure to pore size was first established by Washburn [12].…”

Section: Introductionmentioning

confidence: 99%

“…The principle of mercury porosimetry that relates pressure to pore size was first established by Washburn [12]. The method is based on the experimental determination of the so-called capillary potential curve, which relates the volume of mercury pressed into a porous material to the pressing pressure, and its interpretation based on a model of the course of this process in the porous material [16,18,21].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Vacuum Forming on the Quality of Refractory Materials

Brzeziński,

Łucarz,

Trela

et al. 2023

Materials

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Various designs of furnaces for melting alloys are used in the foundry industry. Regardless of their design, they have one common detail, which is the lining of their interiors with refractory materials. This component in the design of a metal-melting furnace has a very important task—to protect the rest of the furnace assemblies from thermal and mechanical damage. Continuous technical progress and the quality requirements of casting production produce increasingly higher demands for refractory materials in connection with their development as well. The article presents the results of an innovative method of vibratory compaction of refractory material (high-alumina aluminosilicate) using reduced pressure. The analysis presents a comparative study of two methods used for forming refractory materials, i.e., the application of the mentioned innovative method and the classical (standard) method of compaction by vibration only. The effects of the introduced modification in the manufacture of ceramic shapes were evaluated by means of the material’s resistance to thermal shock, linear expansion, and dimensional change due to firing, apparent density, open porosity, and apparent specific gravity, determination of total pore volume and pore size distribution by mercury porosimetry, and slag resistance. The tests performed indicate that the procedure of lowering the pressure during the vibratory compaction of the refractory material creates a more homogeneous structure with a smaller number and size of pores. This makes it possible to improve most of the parameters that determine the quality of the refractories used for the linings of the foundry furnace.

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Mercury porosimetry of ceramics

Cited by 35 publications

References 13 publications

The role of crosslinking treatment on the pore structure and water transmission of biocollagenic materials

The role of crosslinking treatment on the pore structure and water transmission of biocollagenic materials

The fire behaviour of rendered straw bales

The Effect of Vacuum Forming on the Quality of Refractory Materials

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