plaster

 Defination: A wet substance that hardens when it becomes dry and that is used to make smooth walls and ceilings.it is also known as soft mixtuer of sand and cement and sometime lime with water for spreading wall celling or other structure to form a smooth hard surface when dried. Similarly , plastering are done both in  inside  and outside wall. Objectives :      1.To improve the apperances of the surface by provding an even ,smooth ,regular,clean and finished surface.       2.To preserve and  protect the surface from atmospheric influences by acting as a protective coating for the              external plastering. Uses: It is a buliding material used for the protective or decorative coating of wall and celling. It is also used for moulding and casting decorative element. The most common type of plaster mainly contain either gypsum,lime,cement etc but all work in same way   Typ...