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WorksheetsCONCRETE
Total questions: 15
Worksheet time: 8mins
Name
Class
Date
1.
Cement consists of ...
a)
water
b)
fine powder
c)
fine aggregates
d)
coarse aggregates
2.
When ... is added to cement, it begins to set.
a)
water
b)
powder
c)
concrete
d)
reinforcement
3.
When water is added, the cement starts to become ...
a)
solid
b)
coarse
c)
fine
d)
soluble
4.
The most widely used cement-based material is
a)
sand
b)
pebbles
c)
concrete
d)
gravel
5.
Gravel is ...
a)
fine aggregate
b)
coarse aggregate
c)
plasticizer
d)
retarder
6.
Sand is ...
a)
fine aggregate
b)
coarse aggregate
c)
reinforcement
d)
additive
7.
After concrete has set, it structural strenght is reached in ...
a)
14 days
b)
20 days
c)
28 days
d)
32 days
8.
1:2:4 mix consists of
a)
1 part of cement
b)
2 parts of cement
c)
3 parts of cement
d)
no cement
9.
1:2:4 mix consists of ...
a)
2 parts of water
b)
2 parts of cement
c)
2 parts of fine aggregates
d)
2 parts of coarse aggregates
10.
1:2:4 mix consists of ...
a)
4 parts of water
b)
4 parts of cement
c)
4 parts of fine aggregates
d)
4 parts of coarse aggregates
11.
Plasticizer ...
a)
helps the concrete flow
b)
delays setting
c)
makes cement solid
d)
makes concrete set
12.
Retarder ...
a)
helps the concrete to set
b)
delays setting
c)
is a coarse aggregate
d)
is a fine aggregate
13.
Reinforced concrete ...
a)
is weak
b)
contains steel bars
c)
has timber in it
d)
is cast in-sity
14.
Batching means ...
a)
delaying setting.
b)
making improvements.
c)
mixing precise quantities.
d)
making concrete flow.
15.
In-situ means ...
a)
precast
b)
cast at a factory
c)
wet concrete
d)
cast in final position
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