Swelling index may refer to the following material parameters that quantify volume change:
* Crucible swelling index, also known as free swelling index, in
coal assay
Coal analysis techniques are specific analytical methods designed to measure the particular physical and chemical properties of coals. These methods are used primarily to determine the suitability of coal for coking, power generation or for iron or ...
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Swelling capacity
The swelling capacity of a polymer is determined by the amount of liquid material that can be absorbed by it. This test can done by two methods:
# Beaker test method
# Tea bag test method
Beaker test method
In this method
* A small amount of s ...
, the amount of a liquid that can be absorbed by a polymer
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Shrink–swell capacity The shrink–swell capacity of soils refers to the extent certain clay minerals will expand when wet and retract when dry. Soil with a high shrink–swell capacity is problematic and is known as shrink–swell soil, or expansive soil. The amount of ...
in soil mechanics
* Unload-reload constant (κ) in
critical state soil mechanics
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Mechanics
Materials science