WorksheetsCivil war Day 5(Sep 19)-LSGD
Total questions: 10
Worksheet time: 10mins
Name
Class
Date
1.
If aggregate cement ratio is low it is a
a)
leaner aggregate
b)
fatty concrete
c)
green concrete
d)
none of these
2.
For given water content, workability decreases if the concrete aggregates contain an excess of
a)
elongated and flaky particles
b)
rounded particles
c)
particles with least surface area
d)
all of these
3.
Which statement is not correct.
a)
Well graded aggregates are more workable
b)
Round size aggregates are more workable
c)
For a given quantity of paste, bigger size aggregates are more workable
d)
The higher the aggregate cement ratio, higher is the workability
4.
Strength of concrete below which not more than 5% of test result are expected to fail
a)
Tensile strength of concrete
b)
Characteristic compressive strength
c)
Flexural tensile strength of concrete
d)
Splitting tensile strength of concrete
5.
The height / diameter ratio for cylinder in compression strength test is:
a)
0.50
b)
0.25
c)
2.00
d)
0.30
6.
1:1:2 mix corresponds to which grade of concrete
a)
M20
b)
M25
c)
M15
d)
M30
7.
Which of the following is a key ingredient in the preparation of high performance concrete?
a)
Silica fume
b)
Volcanic ash
c)
Blast furnace slag
d)
Pumice
8.
In ferrocement construction, what is the reinforcement ?
a)
8 mm rod
b)
6 mm rod
c)
4 mm rod
d)
Wire-mesh
9.
The concrete slump recommended for beams and slabs is
a)
25–75 mm
b)
130–150 mm
c)
30–125 mm
d)
25–50 mm
10.
Cube strength is found to be approximately ........... times the cylinder strength.
a)
0.80
b)
0.85
c)
0.67
d)
1.25
100 %
