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WorksheetsCONCRETE
Total questions: 20
Worksheet time: 2hrs 40mins
Name
Class
Date
1.
Cement consists of ...
a)
water
b)
fine powder
c)
fine aggregates
d)
coarse aggregates
2.
When ... is added to cement and 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.
Gravel is ...
a)
fine aggregate
b)
coarse aggregate
c)
plasticizer
d)
retarder
5.
Sand is ...
a)
fine aggregate
b)
coarse aggregate
c)
reinforcement
d)
additive
6.
After concrete has set, it structural strenght is reached in ...
a)
14 days
b)
20 days
c)
28 days
d)
32 days
7.
1:2:4 mix consists of
a)
1 part of cement
b)
2 parts of cement
c)
3 parts of cement
d)
no cement
8.
Batching means ...
a)
delaying setting.
b)
making improvements.
c)
mixing precise quantities.
d)
making concrete flow.
9.
In-situ means ...
a)
precast
b)
cast at a factory
c)
wet concrete
d)
cast in final position
10.
Which of the following is not a part of the concrete mixture?
a)
Portland Cement
b)
Aggregates
c)
Air
d)
Water
11.
Portland cement is made by grinding this stone into a fine powder
a)
Granite
b)
Sandstone
c)
Lava Rock
d)
Limestone
12.
What does the word "set" mean when referring to concrete?
a)
Dry
b)
Smooth
c)
Straight/Square
d)
Tamping
13.
Which is of the following is not an attribute of concrete?
a)
Durability
b)
Attractiveness
c)
versatility
d)
Strength
14.
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
15.
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
16.
Which of the following types of forces can concrete best withstand?
a)
Compression
b)
Tension
c)
Torsion
d)
Shear
17.
4. aggregates are very important ingredients of concrete because
a)
A. provides structural stability
b)
B. provide good finish
c)
C. acts as a filler material
d)
D. all of the above
18.
Which the following is a method of batching concrete?
a)
Batching by height
b)
Batching by volume
c)
Batching by chemical composition
d)
Batching by Pressure
19.
A (a) test is an empirical test that
measures workability of fresh concrete.
20.
Water affects hydration and improves the
workability of cement.
a)
TRUE
b)
FALSE
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