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 is a combustible black or brownish-black sedimentary rock, formed as rock strata called coal seams. Coal is mostly carbon with variable amounts of other elements, chiefly hydrogen, sulfur, oxygen, and nitrogen.
Coal is a type of fos ...
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Swelling capacity
The swelling capacity of a polymer is the amount of a liquid that can be absorbed by it. This test can done by two methods:
# Beaker test method
# Tea bag
A tea bag (or teabag) is a small, porous, sealed bag or Packet (container), packet typ ...
, the amount of a liquid that can be absorbed by a polymer
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Shrink–swell capacity in soil mechanics
* Unload-reload constant (κ) in
critical state soil mechanics
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Mechanics
Materials science