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Building Materials

Q1: Quick setting cement is produced by adding

A less amount of gypsum in very fine powdered form

B more amount of gypsum in very fine powdered form

C aluminium sulphate in very fine powdered form

D pozzolana in very fine powdered form

E none of these.

ANS:C - aluminium sulphate in very fine powdered form

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.



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