A hard, white, high-strength, quick-setting finishing plaster; takes a high polish; made by burning gypsum at a high temperature, grinding to a fine powder, and then adding alum (to accelerate the set).
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A hard, white, high-strength, quick-setting finishing plaster; takes a high polish; made by burning gypsum at a high temperature, grinding to a fine powder, and then adding alum (to accelerate the set).
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![]() | Architecture. McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc. All rights reserved. Read more |