White coat plaster

Several investigators have reported that white coat plaster made from dolomite as the raw material and g q)sum exhibits popping or bulging from 5-10 years after application. DTA and TG methods have 

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The tomb was cut from very poor quality limestone that is veined with sodium chloride. Some of these veins are several meters long and about 2 cm thick. The walls of the tomb were plastered with a 3-5-cm-thick mortar, carved in low relief, and coated with a thin white layer (27). From recent carbonate analyses, we found that this thin white layer consists of calcium carbonate whitewash. This whitewash was painted during the final stages of the tomb s construction. 

Solution or a resin exuded by a scale insect, in alcohol or acetone. The color ranges from light yellow to orange the darker shellacs are the less pure. When bleached it is known as white shellac. Applied to surfaces, e.g., wood, shellac forms a hard coating when the solvent evaporates. Shellac is used as a spirit varnish, as a protective covering for drawings and plaster casts, for stiffening felt hats, and in electrical insulation. 

Efflorescence - re-s n(t)s (1626) n. An encrustation of soluble salts, cormnonly white, deposited on the surfece of coatings, stone, brick, plaster, or mortar usually caused by salts or free alkalies leached from mortar or adjacent concrete as moisture moves through it, also known as laitance. G Ausbliihen n, F efflorescence f, S eflor-escencia f, I efflorescenza f. Weismantal GF (1981) Paint handbook. McGraw-Hill Corporation Inc., New York. 

Sharp coat n. A coat of white lead in oil, thinned liberally with turpentine or white spirit. A sharp coat used for the treating of new plaster following the trowel is frequently referred to as sharp color . 

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