Civil Engineering - Concrete Technology - Discussion
Discussion Forum : Concrete Technology - Section 4 (Q.No. 16)
16.
Ordinary Portland cement is manufactured from
Discussion:
27 comments Page 2 of 3.
Abhishek gowda said:
6 years ago
Only 2 to 3% gypsum is added to the cement.
So, I think option A is correct.
So, I think option A is correct.
Vikki said:
7 years ago
Gypsum is a important part of cement so I think B option is a correct explanation because without gypsum cement set imideatly after mixing water.
(2)
Avinash Reddy said:
7 years ago
A is correct lime stone (calcareous) and clay (aluminum, silica, ferric oxides) because 5% of gypsum is added just to overcome quick setting of cement.
Raj yadav said:
7 years ago
I think A is correct option.
Kur said:
8 years ago
A is right.
Niraj kumar said:
8 years ago
Option A is correct.
Ajay nakum said:
8 years ago
The manufacturing process of Ordinary Portland cement is made primarily from calcareous and argillaceous materials, such as limestone or chalk, and from aluminium oxide, silica oxide, ferric oxide and magnesium oxide found as clay or shale.
Nirmal said:
8 years ago
Why not D?
Vikram said:
8 years ago
Option A is correct answer.
Midhun Madhav said:
8 years ago
The answer is B because the cement manufacturing process basically take 3 materials
1. Calcareous
2. Argillaceous
3. Gypsum.
The Limestone and Clay mentioned in Option A is correct but they are only 2 of the materials used for production. Marl, Chalk can also be used as other sources other than limestone. This is the reason it is Option B.
Most important part is Calcareous materials are those which contain lime and not limestone.
1. Calcareous
2. Argillaceous
3. Gypsum.
The Limestone and Clay mentioned in Option A is correct but they are only 2 of the materials used for production. Marl, Chalk can also be used as other sources other than limestone. This is the reason it is Option B.
Most important part is Calcareous materials are those which contain lime and not limestone.
(1)
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