Gypsum Work

Building gypsum is used as heating resistant, moisture preserving, sound absorbing and fire proofing material. As a building decorative material, it is widely used in ceiling and partition projects.

The word gypsum is derived from a Greek word meaning ‘to cook’ known as a burnt or calcined mineral.
Gypsum is extensively used as a construction material; it contains 70% of CaSO4, 2H20 can be used for building construction.Chemically, gypsum is a sulfate of calcium with two molecules of water i.e. CaSO4, 2H20.
It is a crystalline substance that is very little soluble in water and soluble in dilute hydrochloride acid, but it is insoluble in sulfuric acid. It contains 79.1% calcium sulfate and 20.9% water.

Types of Gypsum Products:
1. Gypsum plaster:

It is the white cementing materials formed by partial or fully dehydration of the mineral mixed with particular diluent or hardener.

When applied in a plastic state, it set and hardened by chemical recombination with water.
2. Gypsum fertilizer:

It is one of the earliest forms of fertilizer used in the United States and it has been applied to agricultural soils for over 250 years.

It is a reasonably soluble source of essential plant vitamins, calcium, and sulfur, it might improve general plant growth.
3. Gypsum board:

It is one of many panel products, the common name for a family of sheet products essentially consisting of gypsum.

It includes boards, glass matte panels, abuse-resistant, impact-resistant panels and shaft liner panels.
4. Gypsum powder:

This powder is a natural product made up of calcium, sulfur, oxygen and hydrogen.

It is especially used in constructing materials such as drywall, however it is also useful in agriculture as soil fertilizer and conditioner.