Civil Engineering - Building Materials - Discussion
Discussion Forum : Building Materials - Section 7 (Q.No. 4)
4.
Plaster of Paris is obtained by calcining
Discussion:
17 comments Page 2 of 2.
Balavijay said:
8 years ago
It's gypsum.
Dhiraj said:
8 years ago
Plaster of Paris. Mid-15c, originally it was made from the extensive gypsum deposits of Montmartre in Paris. Any of a group of gypsum cements, essentially hemihydrated calcium sulfate, a white powder that forms a paste when mixed with water and hardens into a solid, used in making casts and molds.
DRz said:
8 years ago
The correct answer is gypsum. I agree.
Sahil said:
8 years ago
What is the answer Dolomite or Gypsum? Please give me a answer.
Jiren said:
8 years ago
Plaster of Paris is made by heating the mineral gypsum. When gypsum is heated to about 150° C it losses water and produces the powder, plaster of Paris. Hemihydrate Calcium Sulfate (2CaSO4. H2O) is commonly known as plaster of Paris. It is formed by heating gypsum.
Umesh upreti said:
9 years ago
I am confused with the answer. Please confirm it.
Adnan guru said:
9 years ago
Gypsum plaster, or plaster of paris, is produced by heating gypsum to about 300 degrees F (150 Degrees C)
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