Concrete Technology (3150610) MCQs

MCQs of Hardened Concrete

Showing 1 to 10 out of 18 Questions
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1.

the strength of concrete is decreased by 

(a)

vibration
(b)

impact
(c)

fatigue
(d)

all of the above 
Answer:

Option (d)

2.

the increase in strength of concrete with time is 

(a)

linear 
(b)

non-linear
(c)

asymptotic 
(d)

all of the above 
Answer:

Option (b)

3.

as per IS:456-2000, the relationship between flexural strength and characteristic strength of concrete is 

(a)

0.5 ' fck '
(b)

0.7 ' fck '
(c)

0.12 ' fck '
(d)

1.0 ' fck '
Answer:

Option (b)

4.

the approximate ratio of concrete strength at 7 days to its strength at 28 days is 

(a)

3/4
(b)

2/3
(c)

1/2
(d)

1/3
Answer:

Option (b)

5.

the shrinkage of concrete can be reduced by 

(a)

low W/C ratio
(b)

water-tight and non-absorbent formwork
(c)

presaturated aggregates 
(d)

all of the above 
Answer:

Option (d)

6.

creep coefficient of concrete at 1 year age is approximately 

(a)

1.1
(b)

2.2
(c)

3.3
(d)

4.4
Answer:

Option (a)

7.

the shrinkage of concrete is due to change in 

(a)

length 
(b)

cross-sectional area 
(c)

volume 
(d)

surface area 
Answer:

Option (c)

8.

concrete shrinkage is more pronounced in 

(a)

rich mix 
(b)

very lean mix
(c)

lean mix 
(d)

normal mix 
Answer:

Option (a)

9.

creep of the concrete is influenced by 

(a)

strength of concrete 
(b)

age of concrete 
(c)

water-cement ratio 
(d)

all of the above 
Answer:

Option (d)

10.

the ratio of ultimate creep strain to elastic strain is known as 

(a)

creep modulus 
(b)

creep coefficient 
(c)

creep strain ratio 
(d)

tertiray creep 
Answer:

Option (b)

Showing 1 to 10 out of 18 Questions
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