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Cream City brick
Cream City brick is a cream or light yellow-colored brick made from a clay found around Milwaukee, Wisconsin, in the Menomonee River Valley and on the western banks of Lake Michigan. These bricks were one of the most common building materials used in Milwaukee during the mid and late 19th century, giving the city the nickname "Cream City" and the bricks the name "Cream City bricks".〔Pepper, Terry〕
== Characteristics ==
Cream City bricks are made from a red clay containing elevated amounts of lime and sulfur;〔Paulsen, Eric〕 this clay is common in regions of Wisconsin, especially near Milwaukee. When the bricks are fired, they become creamy-yellow in color.〔
Although light-colored when first made, Cream City bricks are porous, causing them to absorb dirt and other pollutants; this tends to make structures constructed out of them dark-colored as time passes. Once Cream City bricks absorb pollutants, they are difficult to clean, a problem which restoration experts in Milwaukee have been facing since the 1970s. Initially, sandblasting was attempted; however, it not only proved to be ineffective, but damaged the bricks. Currently, chemical washes are accepted as the most effective method of cleaning Cream City bricks.〔 The historic Trimborn Farmhouse in Greendale, Wisconsin is an example of brick that has been cleaned to reveal its original color.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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