Concrete Technology (3150610) MCQs

MCQs of Unit 1 : Special concrete

Showing 1 to 10 out of 16 Questions
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1.

the light-weight concrete may be produced by 

(a)

using lightweight aggregate 
(b)

incorporating air bubble in concrete 
(c)

omitting sand fraction 
(d)

all of the above 
Answer:

Option (d)

2.

lightweight concrete is used 

(a)

for reducing the dead weight of structures 
(b)

in filler wall panels in highrise buildings 
(c)

for improving thermal insulation 
(d)

any of the above 
Answer:

Option (d)

3.

lightweight concrete has all the following beneficial characteristic except, 

(a)

high thermal insulation
(b)

high sound insulation 
(c)

excellent fire resistance 
(d)

reduced drying shrinkage 
Answer:

Option (b)

4.

aerated concrete is produced by addition of 

(a)

sodium silicate 
(b)

copper sulphate 
(c)

aluminium powder 
(d)

zinc 
Answer:

Option (c)

5.

which of the following fibres give the highest improvement in the impact strength of fibre reinforced concrete?

(a)

glass fibers 
(b)

polypropylene, nylon, and other organic fibers 
(c)

carbon fibers 
(d)

asbestos fibers 
Answer:

Option (a)

6.

in polymer concrete (resin concrete) the polymerization can be achieved by 

(a)

thermal-catalytic reaction
(b)

catalyst-promoter reaction
(c)

radiation 
(d)

all of the above 
Answer:

Option (d)

7.

shotcrete differs from conventional concrete with regard to 

(a)

material, proportions and void system 
(b)

compaction
(c)

application procedure
(d)

all of the above 
Answer:

Option (d)

8.

the cement-sand ratio in the ferrocement matrix should not be leaner than 

(a)

1:1
(b)

1:2
(c)

1:3
(d)

1:4
Answer:

Option (c)

9.

the volume of reinforcement in ferrocement varies between 

(a)

1-2%
(b)

2-5%
(c)

5-8%
(d)

8-10%
Answer:

Option (c)

10.

the water-cement ratio for ferrocement mix should be 

(a)

less than 0.35
(b)

between 0.35 to 0.40
(c)

between 0.40 to 0.50
(d)

between 0.50 to 0.60
Answer:

Option (b)

Showing 1 to 10 out of 16 Questions
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