Concrete Technology (3150610) MCQs

MCQs of Hardened Concrete

Showing 11 to 18 out of 18 Questions
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11.

shrinkage strain in concrete is approximately 

(a)

0.0035
(b)

0.0350
(c)

0.0003
(d)

0.3500
Answer:

Option (a)

12.

modulus of elasticity of concrete increases with 

(a)

the age
(b)

the increase in W/C ratio 
(c)

the decrease in curing period 
(d)

all of the above 
Answer:

Option (a)

13.

the most appropriate method to specify the concrete mix is by 

(a)

the nominal mix ratio 
(b)

the designed mix ratio
(c)

the degree of control 
(d)

the grade of concrete 
Answer:

Option (d)

14.

the strength of concrete is influenced by 

(a)

size of test specimen 
(b)

moisture conditions
(c)

rate of loading 
(d)

all of the above 
Answer:

Option (d)

15.

the standard size of a concrete cube for compressive strength test is 

(a)

50 mm
(b)

100 mm
(c)

150 mm
(d)

200 mm
Answer:

Option (c)

16.

for compressive strength determination the minimum number of cubes required in a sample are 

(a)

1
(b)

2
(c)

3
(d)

4
Answer:

Option (c)

17.

ISI has specified the full strength of concrete after 

(a)

7 days 
(b)

14 days
(c)

28 days
(d)

1 year
Answer:

Option (c)

18.

the individual variation in compressive strength results should not exceed ______ of the average. 

(a)

5%
(b)

10%
(c)

15%
(d)

20%
Answer:

Option (c)

Showing 11 to 18 out of 18 Questions
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