It is a mix of gypsum powder and water that turns into this smooth, paste-like substance. You slap it on with a trowel or putty knife and wait for it to dry. You've got a solid surface ready for ...

The Concrete and Aggregates segment is involved in mixing cement ... in the manufacture of gypsum wallboard. The Recycled Paperboard segment processes paper fiber, water, and paper chemicals ...

and water. Plaster of Paris and gypsum both contain calcium sulfate. When the two are mixed, the reaction between the acid and the plaster results in a softer, slower-drying consistency of the ...