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All fired ceramic wares or materials which, when shaped, contain a significant amount of clay. Exceptions are those used for technical, structural or refractory applications. Pottery is also: (1) the art and wares made by potters; (2) a ceramic material (3) a place where pottery wares are made; and (4) the business of the potter.
Fire clay in a furnace. Fire clay is a range of refractory clays used in the manufacture of ceramics, especially fire brick.The United States Environmental Protection Agency defines fire clay very generally as a "mineral aggregate composed of hydrous silicates of aluminium (Al 2 O 3 ·2SiO 2 ·2H 2 O) with or without free silica."
Kaolin, sometimes referred to as china clay, is a key ingredient in porcelain, which was first used in China around the 7th and 8th centuries. [17] Ball clay: An extremely plastic, fine grained sedimentary clay, which may contain some organic matter. Fire clay: A clay having a slightly lower percentage of fluxes than kaolin, but usually quite ...
A fire brick, firebrick, fireclay brick, or refractory brick is a block of ceramic material used in lining furnaces, kilns, fireboxes, and fireplaces. A refractory brick is built primarily to withstand high temperature, but will also usually have a low thermal conductivity for greater energy efficiency .
Clay blocks (sometimes called clay block brick) being laid with an adhesive rather than mortar. Bricks are made in a similar way to mud-bricks except without the fibrous binder such as straw and are fired ("burned" in a brick clamp or kiln) after they have air-dried to permanently harden them. Kiln fired clay bricks are a ceramic material ...
Gay Head Cliffs in Martha's Vineyard consist almost entirely of clay. A Quaternary clay deposit in Estonia, laid down about 400,000 years ago. Clay is a type of fine-grained natural soil material containing clay minerals [1] (hydrous aluminium phyllosilicates, e.g. kaolinite, Al 2 Si 2 O 5 4).
The body of Longquan celadon, as seen in fragments under glaze, varies from "a heavy, compact grey stoneware to an almost white porcellaneous material", but where fired at the surface this turns to a typical terracotta reddish brown, seen at the unglazed foot of many pieces, and when relief decoration is left unglazed (see below and illustration).
They were made predominantly of fired clay, but also sometimes of marble, bronze or gilt. In Rome, they replaced wooden shingles , and were used on almost every type of structure, from humble outbuildings to grand temples and public facilities.