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Gypton gypsum Sepid Gatch Saveh
Sepid Gatch Saveh
Iran
Binder, the gypsum board from Cook calcium sulfate, two Abe (CaSO4.2H2O) comes to hand and consists of calcium sulfate in different phases of hydration is. Mix plaster building consisting of at least 50% gypsum as the binder of the main active and a maximum of 5% lime (calcium hydroxide), etc. is. Gypsum finishing plaster) in order to pay the smooth surfaces and polished concrete can be used. in terms of grading compared to the chalk, ordinary softer and has time setting it longer and has high adhesion higher. Therefore, sufficient time for optimal use and to pay to the workman gives.
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Gypton gypsum Sepid Gatch Saveh
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)
15-Dec
Secondary capture (min)
30-35
Two-day flexural strength
Minimum SO3 (%)
36
Minimum CaO (%)
24
Maximum Na2O (%)
0.3
Maximum MgO (%)
0.6
Maximum H2O (%)
6