What is plaster?
Plaster is one of the widely used building materials, which is used to cover walls and ceilings and to mold decorative elements. Construction plaster is obtained from gypsum found in nature. Gypsum stone has a crystalline texture and consists of thick layers that turn into building plaster powder after extraction and processing. After this stone is extracted from the ground by stone crusher machines, it is transferred to the furnace and heated at a temperature of 180 centigrade. This heat destroys the crystallization of gypsum stone and evaporates its water, as a result, the gypsum powder required for construction works is provided in this way. Construction plaster is obtained from pure gypsum stone and no additives are added to it during its production process.
The benefits of plaster
The strength of plaster depends on two factors, the setting temperature and the amount of water in the plaster paste. The strength of the plaster increases after it sets and remains constant. Sand can be added to plaster to increase its strength.
The minimum setting time for construction plaster is 4 minutes and the maximum time is 10 minutes. Therefore, plaster is one of the fast building materials, which shortens the duration of the work.
Plaster gains extra volume after it is set and does not shrink or crack after drying.
Plaster creates a smooth, uniform surface without holes, so this material is used to fill cracks in the wall.
Plaster has a high resistance to fire and is actually a slow-burning material.
Gypsum is a very light material and its use does not impose additional burden on the building. This material is a type of sound and thermal insulation. Plaster has malleability and can be made into different shapes. Due to the abundance of gypsum mines in Iran, this product has a reasonable and low price. Gypsum mortar is highly resistant to cold and frost. Due to the fact that heat is released during the production of mortar, it is possible to plaster at low temperatures. Gypsum has good compatibility with other building materials and it can be applied on all types of cement, brick, limestone, plaster and soil surfaces.
Application of building plaster
Gypsum is a quick-setting material, so it is used as a mortar. In today's buildings, plaster is mostly used for whitewashing the building before painting and wallpapering.
In addition to that, prefabricated plaster parts that are used to make Kenaf roofs are among the applications of plaster. These parts are manufactured in the factory and then installed in the building.
Gypsum is also used in the production of gypsum wall coverings and prefabricated gypsum walls. Gypsum wall coverings are in the form of panels and can be used in interior decoration design. Gypsum is also used in agriculture, medicine, sculpture and cement production. Plaster can also be used in molding in tile and ceramic industries, foundry industry, paper industry, leather industry and petrochemical industry.
