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DENS - Density (Specific Gravity) Test

This is the density of the actual mineral solid, not the weight of the bulk material powder. This is obvious if this value is being quoted for a mineral but can be confusing if it is for a powder. Thus the density of a powdered mineral is actually referring to the average specific gravity of the tiny particles making up that powder.

A third kind of density is the apparent density of a dried or fired ceramic body (which of course often contains many air pockets). The LDW test has more information on measuring the density of a dry ceramic bar.

ASTM C-128

Variables

VAL - Value (V)

The specific gravity of the solid itself (not the powder).

Related Information

Links

Articles Simple Physical Testing of Clays
Learn to test your clay bodies and clay materials and record the results in an organized way, understanding the purpose of each test and how to relate its results to changes that need to be made in process, recipe and materials.
URLs http://www.essex1.com/people/speer/density.html
Density of Specific Gravity
URLs http://mineral.galleries.com/minerals/property/density.htm
Density information at MineralGalleries
URLs http://www.astm.org/Standards/C20.htm
ASTM-C20 Density Test
Tests Deflocculation Demand
Tests LOI/Density/Water Content
LDW LOI, density and water content test procedure for plastic clay bodies and porcelains
Tests Bulk Density lbs/cu. ft. (Packed)
Materials Ferro Frit 3134
A frit with 23% B2O3. The most common of frits used in pottery in North America. Around the world, other companies make frits of equivalent chemistry.
Typecodes Body Tests
Tests conducted on bodies made from materials, as opposed to the materials themselves.
Typecodes Material Tests
Test conducted primarily on materials use to make bodies or glazes.
Oxides Sm2O3 -
By Tony Hansen
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