THE initial thickening of slurries of hemi-hydrate type gypsum plasters has been considered by many workers to be due to a colloidal mechanism, whereas the further hardening and final setting have ...
Composed mainly of calcium sulfate dihydrate, gypsum is a naturally occurring mineral used in cement, drywall, plaster and other building materials. Scientists have now devised a method of creating ...
EXPERIMENTS carried out in this laboratory with some commercial gypsum plasters show that, between 0° and 50° C., temperature may exert a comparatively small effect upon the rate of hydration of the ...
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