Physical, Chemical, and Structural Characteristics of Clays

Clay minerals tend to form microscopic to submicroscopic crystals. 

They can absorb water or lose water from simple humidity changes. 

When mixed with limited amounts of water, clays become plastic and can be molded. 

When water is absorbed, clays will often expand as the water fills the spaces between the 

Due to the absorption of water, the specific gravity of clays is highly variable and is lowered with increased water content. 

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