Engineering :: Concrete Technology

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31.

Which of the following statement is wrong?

A.	The concrete can not be pumped.	B.	The concrete should have maximum creep.
C.	The concrete structures can be put to use immediately ater their construction.	D.	all of the above

32.

The characteristic, which makes the concrete a versatile and widely used material of modern consturction, is the possibility of

A.	controlling the properties of concrete by using appropriate ingredients	B.	moulding the concrete in any desired shape
C.	complete mechanisation of concrete preparation and its placing process	D.	all of the above

33.

The concrete without any reinforcement has

low

high

34.

Segregation of concrete increases the strength of concrete.

Yes

35.

The material used as an ingredient of concrete is usually

A.	cement	B.	aggregate
C.	water	D.	all of these

36.

A suitable admixture added at the time of preparing the concrete mix, makes the concrete.

A.	water proof	B.	acid proof
C.	highly strong	D.	all of these

37.

The function of aggregates in concrete is to serve as

A.	binding material	B.	filler
C.	catalyst	D.	all of these

38.

Calcareous material used in the manufacture of cement consists of

A.	lime stone	B.	chalk
C.	shells	D.	all of these

39.

In the manufacture of cement, the dry or wet mixture of calcareous and argillaceous materials is burnt in a

A.	country kiln	B.	continuous flare kiln
C.	rotary kiln	D.	all of these

40.

In the manufacture of cement, the dry or wet mixture of calcareous and argillaceous materials is burnt at a temperature between

A.	900? to 1000?C	B.	1000?C to 1200?C
C.	1200?C to 1500?C	D.	1500?C to 1600?C