Abstract:
Gypsum board is made of gypsum,
which consists of the core of the board
and the both sides of the gypsum core -
are covered and adhered with paper, and
is widely used as a construction material.
Gypsum board was originally invented
in 1902, developed in U.S.A.
since then, and widely in production in
many countries over the world.
The characteristics of gypsum board
as building material are briefly summarized
as;