Gypsum is commonly utilized in the production of wallboards, which are used to cover walls and ceilings. It's also used to manufacture plaster, which is utilized in home building and blended into a patching solution for wallboard repair. Plaster has several advantages over other types of paint; it's easy to work with, won't crack or peel, and will never run.
There are many other products that use gypsum as an ingredient including some types of paper, fireproofing materials, and even food additives.
The primary use of gypsum is as a cement. It sets into a hard mass at room temperature and does not emit any gases during this process. This makes it suitable for use in homes and businesses alike. It is also inexpensive and available in most areas of the world.
There are two main types of cements: hydraulic and vitreous. Hydraulic cements require water in order to set into a solid substance. This type of cement is useful for making concrete structures such as buildings and bridges. Vitreous cements do not need water to set into a solid state and are therefore usable on open surfaces such as roads. Common examples of vitreous cements include china clay and burnt bone ash.
Both hydraulic and vitreous cements will chemically react with calcium hydroxide present in dry soil.
Gypsum board, often known as drywall or plasterboard in the building industry, is predominantly used as a finish for walls and ceilings. Gypsum is also used in surgical splints, casting molds, and modeling due to its coagulation properties. In construction, it is most commonly used as a wall panel, but can be used as flooring or ceiling as well.
It is estimated that there are more than 100 million square feet of gypsum board in U.S. homes. That's enough board to cover all the floors and half-floors of the country about 50 times.
Here are some other uses for gypsum that aren't exactly household related: Gypsum is the key ingredient in some types of fireproof wallpaper and interior finishes; it can be used to make boards that are sound-deadening and heat-resistant; and it's sometimes added to plastics to make them less brittle.
Household applications include use as a cooking surface and food storage container. Gypsum has been used for centuries by artists to create models in clay from which paintings and sculptures can be made. Today, it is used instead to create templates from which plaster casts can be made. These can then be used as study objects for students interested in anatomy or pathology.
The Templates are then removed from the model and the negative space filled in with new material.
Gypsum is most often found in wallboard and plaster products. A tiny proportion of highly pure gypsum is utilized in the production of glass and other specialized industrial uses. Plaster of Paris, which is composed primarily of calcium sulfate hemihydrate, is used to manufacture glass because it can be molded into shapes and then cured with heat or light exposure into a hard, durable material that's suitable for architectural applications.
There are two main types of glass: flat glass and shaped glass. Flat glass is used to make windows and other transparent materials. Shaped glass is used to make decorative items like dishes and vases. The main difference between these two types of glass is that glass manufacturers use different processes when making each type.
The quality of glass depends on how it's made. The four main factors that affect quality are purity of the raw materials, temperature during production, method used to produce the glass, and who will be using it. Purity of the raw materials is important because impurities may cause defects in the glass product. For example, iron oxide produces a green color in glass, while silver exhibits a reflective white color. Temperature plays an important role in the production of glass because it affects its flowability and moldability.
Gypsum is a very important treated substance. Its primary use is as a construction material, most often as plaster of Paris for plastering walls and creating ornamental elements in structures. It can also be made into tiles or blocks for use in building materials.
Other applications include: food additives (e.g., calcium sulfate hemihydrate), animal feed supplements (calcium carbonate), chemical reagents (e.g., an acidifying agent in water treatment), filler (e.g., in some plastic products), fertilizer (after being burned), refractory material (a mixture of clay and ground limestone used in the production of cement), soil conditioner (a mixture of gypsum and lime used to improve the quality of soil for planting), spray-dried plasma protein product for animal nutrition (calcium sulfate dehydrate), superabsorbent polymer (hydrous calcium sulfate), and wall plaster.
Calcium sulfate dihydrate, the most common form of gypsum, is used in many products such as plaster of Paris, Gypsum boards, and chalk. It can be obtained by heating calcium sulfate hemihydrate to 80°C (176°F) or higher and then slowly cooling it down to room temperature.
It is made from cheap materials such as gypsum and paper and is utilized in most building types for a variety of uses such as wall lining, dividers, sound control, and fire protection. The primary environmental implications of plasterboard are caused by the manufacturing process, transportation, and disposal. Plasterboard emits volatile organic compounds (VOCs) into the atmosphere during its production and when it decomposes it adds to landfills.
The building process requires a large amount of plasterboard to be used in new construction. As more and more new homes are built approximately one ton of plasterboard is used per house. When considering all the other products that are used in building homes this number is probably higher. As people move out of their homes they often have walls and ceilings that need to be taken down so they can be reused or recycled. This process also produces tons of plasterboard waste which cannot be disposed of in ordinary trash bins but instead needs to be put in designated recycling centers.
The use of plasterboard in buildings is responsible for about 5% of the total volume of landfill space needed in the United States. That means that if you were to stop using plasterboard all together you would need an extra 5% of our existing landfills to store all the discarded plasterboard from building homes and commercial buildings.
Plasterboard is a very common water source contamination problem because it is usually located near areas where water leaks into houses.