Civil Concrete Tech and Design Part-3

Test Preparation on Civil Concrete Tech and Design Part-3

1.

Permissible compressive strength of M 200 concrete grade is

1100 kg/cm2
2150 kg/cm2
3200 kg/cm2
4250 kg/cm2

2.

The minimum diameter of longitudinal bars in a column is

16 mm
28 mm
312 mm
416 mm

3.

The high strength of rapid hardening cement at an early stage is due to its

1Finer grinding
2Burning at high temperature
3Increased lime cement
4Higher content of tricalcium

4.

Sand requiring a high water-cement ratio belongs to

1Zone I
2Zone II
3Zone III
4Zone IV

5.

Minimum grade of concrete to be used in reinforced concrete as per IS: 4561978 is

1M 15
2M 20
3M 10
4M 25

6.

While compacting the concrete by a mechanical vibrator, the slump should not exceed

12.5 cm
25.0 cm
37.5 cm
410 cm

7.

Non-uniform compaction may cause the concrete

1Porous
2Non-homogeneous
3Reduced strength
4All the above

8.

Modulus of rupture of concrete is a measure of

1Flexural tensile strength
2Direct tensile strength
3Compressive strength
4Split tensile strength

9.

M10 grade of concrete approximates

11 : 3 : 6 mix
21 : 1 : 2 mix
31 : 2 : 4 mix
41 : 1.5 : 3 mix

10.

Higher workability of concrete is required if the structure is

1Made with cement concrete
2Thick and reinforced
3Thin and heavily reinforced
4Thick and heavily reinforced

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