A cultural research into the opposite signifiance of this adjectives

Wednesday, October 20, 2010

Clay


Clays exhibit plasticity when mixed with water in certain proportions. When dry, clay becomes firm and when fired in a kiln, permanent physical and chemical reactions occur. These reactions, among other changes, cause the clay to be converted into a ceramic material.

Because of these properties, clay is used for making pottery items, both utilitarian and decorative. Different types of clay give different properties and different colors, from a dull gray to a deep orange-red.



Clay, being relatively impermeable to water, is also used where natural seals are needed, such as in the cores of dams, or as a barrier in landfills against toxic seepage

Recent studies have investigated clay's absorption capacities in various applications, such as the removal of heavy metals from waste water and air purification.

@ Click here to discover the wonders of Richard Ginori's clay

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