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A gypsum block is made of gypsum plaster and water. The manufacturing process [1] is automated at production plants where raw gypsum (CaSO 4 ·2H 2 O) is ground and dried, then heated to remove three-quarters of the bound water and thus transformed into calcium sulfate hemihydrate (CaSO 4 ·½H 2 O), also known as gypsum plaster, stucco, calcined gypsum or plaster of Paris.
Gypsum waste such as gypsum blocks and plaster do not require the removal of paper, as they are not made with paper from the beginning. It is typical for the gypsum recyclers to accept up to 3 per cent of contamination from other materials. The professional recyclers are capable of handling gypsum waste with nails and screws, wall coverings etc.
Gypsum provides a degree of fire-resistance to these materials, and glass fibers are added to their composition to accentuate this effect. Gypsum has negligible heat conductivity, giving its plaster some insulative properties. [37] Gypsum blocks are used like concrete blocks in construction. Gypsum mortar is an ancient mortar used in construction.
Drywall (also called plasterboard, dry lining, [1] wallboard, sheet rock, gib board, gypsum board, buster board, turtles board, slap board, custard board, gypsum panel and gyprock) is a panel made of calcium sulfate dihydrate , with or without additives, typically extruded between thick sheets of facer and backer paper, used in the construction ...
It is a mixture of gypsum plaster, Portland cement, and sand. [ 1 ] Gypsum concrete is sometimes called gypcrete by construction professionals , [ 2 ] [ 3 ] as a generic name in common usage (but not in law), but that is an alteration of Gyp-Crete , a Maxxon trademark for its brand of gypsum concrete. [ 4 ]
Plaster veneer (American English) or plaster skim (British English) is a construction methodology for surfacing interior walls, by applying a thin layer of plaster over a substrate—typically over specially formulated gypsum board base, similar in nature to drywall.
AAC blocks on a residential house construction site in Russia. AAC is a concrete-based material used for both exterior and interior construction. [ 23 ] One of its advantages is quick and easy installation because the material can be routed , sanded, or cut to size on-site using a hand saw and standard power tools with carbon steel cutters.
The rough texture of the face is created by running the concrete across a cast-iron face plate or by using a plaster mold taken from a cut stone block. [3] This process of texturing concrete block was streamlined by an inventor named Harmon S. Palmer who created a machine that combined the processes of texturing and forming the concrete blocks.