BS 1902-3-3.8:1989 Methods of testing refractory materials. General and textural properties - Determination of bulk density, true porosity and apparent porosity of dense shaped products (method 1902-308)
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This standard specifies methods for determining the bulk density, true porosity, and apparent porosity of dense shaped refractory products. The methods provide essential data for evaluating the material's performance in high-temperature applications, particularly in industrial furnaces and kilns.
Key Definitions:
Bulk Density – The mass of a unit volume of a material, including pores and voids.
True Porosity – The ratio of open and closed pores within the material to its total volume.
Apparent Porosity – The volume of open pores (accessible to liquid absorption) relative to the total volume.
Test Method (Method 1902-308):
The test involves measuring the mass, volume, and porosity of refractory specimens using liquid immersion techniques or other standard procedures.
Typically, water or kerosene immersion is used to determine the apparent porosity and bulk density.
The true porosity is determined by assessing the volume of open and closed pores within the material.
BS 1902-3-3.8:1989 Methods of testing refractory materials. General and textural properties - Determination of bulk density, true porosity and apparent porosity of dense shaped products (method 1902-308)
