Bitumen may be dissolved in

The ductility value of bitumen for suitability in road construction should not be less than

A

30 cm

B

40 cm

C

50 cm

D

60 cm

Bitumen felt is used for

A

Water proofing

B

Damp proofing

C

Both (A) and (B)

D

Neither (A) nor (B)

The filler used in plastic bitumen, is

A

Shale powder

B

Talc powder

C

Asbestos powder

D

Plastic powder

Bitumen felt

A

Is used as water proofing material

B

Is used as damp proofing material

C

Is made from bitumen and hessian fibres

D

All the above

Which of the following represents a carpet of sand-bitumen mix without coarse aggregates ?

A

mastic asphalt

B

sheet asphalt

C

bituminous carpet

D

bituminous concrete

Percentage of free carbon in bitumen is

A

more than that in tar

B

less than that in tar

C

equal to that in tar

D

none of the above

In the penetration macadam construction, the bitumen is

A

Sprayed after the aggregates are spread and compacted

B

Premixed with aggregates and then spread

C

Sprayed before the aggregates are spread and compacted

D

None of the above

Penetration test on bitumen is used for determining its

A

Grade

B

Viscosity

C

Ductility

D

Temperature susceptibility

Road grade bitumen is produced from vacuum residue by its

A

Aeration

B

Pyrolysis

C

Hydrogenation

D

Steam reforming

Plastic bitumen is generally used for

A

Road pavements

B

Expansion joints

C

Crack fillings

D

None to these

Bitumen may be dissolved in

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