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Civil Engineering - Building Materials - Discussion

Discussion Forum : Building Materials - Section 3 (Q.No. 22)
Building Materials
22.
Quick setting cement is produced by adding
less amount of gypsum in very fine powdered form
more amount of gypsum in very fine powdered form
aluminium sulphate in very fine powdered form
pozzolana in very fine powdered form
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
21 comments Page 1 of 3.
Ankit bhadola said:   1 decade ago
Answer is C.

Quick Setting Cement as the name indicates, these types of cements are used where quick setting is needed. The quick setting cement is manufactured by adding a small percentage of aluminum sulphate and then it is finely grinded with cement.

And also for quick setting action a small percentage of gypsum or retarder is added. The aluminum sulphate is mainly added to accelerate the setting time fast.
Srinivas said:   10 years ago
For normal cement gypsum add 2% which causes increasing setting time.
Bishal said:   9 years ago
The answer will be option A. Because gypsum is such a chemical compound which is liable for the setting of cement.
Ranjan said:   9 years ago
I think the option will be both A and C.
Ajay said:   8 years ago
Gypsum is an retarder not accelerater.
Ravinder Poonia said:   8 years ago
The Correct answer is A Because gypsum is such a chemical compound which is liable for the setting of cement.
Lal bahadur bairwa said:   8 years ago
Answer is A and C because gypsum is retarded setting time and aluminum sulphate is produced quick setting but best answer is C.
Manish Goley said:   8 years ago
I think it is both A and C.
Mahboob Ali said:   7 years ago
Option C is CORRECT.

Because quick setting cement mainly produced by adding a small amount of ALSO4 and fine grinding other than RHS OR OPC. And reduced CASO4 (GYPSUM).
Rabindra said:   7 years ago
Nice @Ankit.
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