Gypsum building plasters are used extensively abroad
for general building operations and the manufacture of pre-formed gypsum
building products like tiles, blocks, plaster board etc, which have the
specific advantage of lightness and high fire resistance.
There are some advantages & disadvantages Some are belowGypsum plaster is directly applied on brick, block or RCC, no separate finishing product required.
It requires no curing, therefore ready to paint.
Gypsum plaster saves time during construction and ensures timely possession of homes/ building.
Gypsum plaster expands slightly on setting and is not, therefore likely to cause cracking of surface.
On drying out it forms a sufficient dense surface to resist normal knocks.
Gypsum plaster is comparatively easy to spread and level.
Gypsum plasters have no appreciable chemical action on paint.For details see link belowhttp://www.gharexpert.com/articles/POP-2134/Gypsum-plaster-Plaster-Paris-_0.aspx