hard-burnt plaster

hard-burnt plaster

Same as Keene’s cement.

Keene’s cement flooring cement, gypsum cement, hard-burnt plaster, tiling plaster

keel molding: a 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).