Engineering :: Concrete Technology

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The practical utility of concrete technology for civil engineers is to

A.	enable them to know how to stock properly the materials required for concrete	B.	enable them to perform different tests concerning concrete
C.	make them conversant with fundamental principles of concrete	D.	all of the above

The strength and durability of concrete depends upon

A.	size of aggregates	B.	grading of aggregates
C.	moisture contents of aggregates	D.	all of these

The breaking up of cohesion in a mass of concrete is called

A.	workability	B.	bleeding
C.	segregation	D.	creep

The workability of concrete is defined as the

A.	ease with which it can be mixed, transported and placed in position in a homogeneous state	B.	breaking up of cohesion in a mass of concrete
C.	separation of water or water-cement mixture from the freshly mixed concrete	D.	none of the above

The separation of water or water-cement mixture from the freshly mixed concrete is known as bleeding.

True

False

The continuous strain, which the concrete undergoes due to application of external loads, is called

A.	workability	B.	bleeding
C.	segregation	D.	creep

A good concrete should be subjected to

maximum

minimum

Segregation in concrete results in

A.	honey combing	B.	porous layers
C.	surface scaling	D.	all of these

Harshness in concrete is due to the excess of

A.	water	B.	finer particles
C.	middle sized particle	D.	coarser particles

10.

In order to avoid segregation, the concrete should not be thrown from a height.

Agree

Disagree