Market construction
Market construction

Hardening gypsum Maragheh-Hashtrood gypsum

Maragheh-Hashtrood gypsum
Iran

The gypsum adhesives are obtained by cooking calcium sulfate duodenum and are composed of calcium sulfate in various phases of hydration. The gypsum mixture consists of at least 50% gypsum as the main active adhesive component and maximum 5% lime.
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Hardening gypsum Maragheh-Hashtrood gypsum

Plaster of building adhesives is an air adhesive. Building plaster is obtained by baking gypsum at a temperature of about 180 degrees. The chemical formula of gypsum is calcium sulfate with two water molecules which after boiling, about (75%) of its water is vaporized and the building gypsum is obtained by chemical formula CaSO4.0.5H2O. Pure plaster is white, but impurities cause it to change color.

Advantages of construction gypsum:

  •  Being early
  •  Volume Upon Hardening:
  •  Fire resistance
  • The property of being acoustic
  • The property of being plastic
  • The price is right
  • Abundance and availability

Disadvantages of construction gypsum:

  • Not resistant to water
  • Corrosion in metals

Initial capture (min)
08-Jul
Secondary capture (min)
22
Compressive strength (N / mm2)
7.87
Flexural strength (N / mm2)
2.77
Bag weight (kg)
40

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