Concrete Technology

Q: Separation of coarse aggregates from mortar during transportation, is known

(a) :  bleeding
(b) :  creeping
(c) :  segregation
(d) :  shrinkage
(e) :  None of these
Answer:  segregation
Explanation:  

Q: Concrete mainly consists of

(a) :  cement
(b) :  admixture
(c) :  water
(d) :  all the above.
(e) :  None of these
Answer:  all the above
Explanation:  

Q: According to the recommendations of IS : 456-1978, the expansion joints

(a) :  are provided where plane changes abruptly
(b) :  are provided to ensure minimum resistance
(c) :  are supported on separate columns
(d) :  all the above.
(e) :  None of these
Answer:  all the above
Explanation:  

Q: For the construction of cement concrete floor, the maximum permissible size of aggregate, is

(a) :  4 mm
(b) :  8 mm
(c) :  10 mm
(d) :  12 mm
(e) :  None of these
Answer:  10 mm
Explanation:  

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