44MR | APPO | AVPS | AVSC | BDGC | BDLB | BLOI | BWIW | CCON | CDRY | CEC | CLWC | CMST | COLE | COVB | CSSS | | DFAC | DFDM | DIEL | DNLP | DS | DSHR | DSRN | DSTR | DTMP | EBCT | EM20 | FRFU | FRRD | FRTG | FSHR | FSTR | GBMF | GEBR | GLAZ | GLFL | GLHD | GLLE | GSPT | GTTM | HDMI | HEGF | HMA | HMAN | HMOH | IFP | IWCT | L10M | L1M | L20M | L2M | L30M | L5 | L5M | LDW | LOI | LQLM | MDPS | MLRG | MOIP | MOR | MOR5 | MORD | OLAD | P200 | P325 | PBPO | PCE | pHPG | pHPW | PPD | PRSM | PSHP | RC | RHEO | SADR | SAMG | SCLE | SHAB | SIEV | SLBY | SOLU | SPHC | SSAB | SVWT | TGA | THCO | TNST | TREL | TRMN | TSFL | UPSD | WABS | WOPL | WRA | WSR | XREF

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 The Physics of Clay Bodies
Learn to test your clay bodies and recording the results in an organized way and understanding the purpose of each test and how to relate its results to changes that need to be made in process and recipe.
URLs http://www.astm.org/Standards/C20.htm
ASTM-C20 Density Test
URLs http://mineral.galleries.com/minerals/property/density.htm
Density information at MineralGalleries
URLs http://www.essex1.com/people/speer/density.html
Density of Specific Gravity
Typecodes Material Tests
Test conducted primarily on materials use to make bodies or glazes.
Typecodes Body Tests
Tests conducted on bodies made from materials, as opposed to the materials themselves.
Tests Bulk Density lbs/cu. ft. (Packed)
Tests LOI/Density/Water Content
Tests Deflocculation Demand
Materials Ferro Frit 3134
Oxides Sm2O3 -

By Tony Hansen


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