D49 RAPID RECAL HIGHWAY MATERIALS

Multiple Choice

Which soil property is essential for highway construction?

• Should be compressible

• Should be stable

• Should be permeable

• Should resist compaction

Multiple Choice

Which classification system uses an equilateral triangle?

• Unified soil classification

• AASHTO classification

• Textural classification

• Grain size classification

Multiple Choice

Which cutback bitumen type is most suitable for cold weather applications?

• Rapid curing

• Medium curing

• Slow curing

• Penetration grade bitumen

Match

Match the following

• Unified Soil Classification

• AASHTO classification

• Textural classification

• Grain size classification

Developed by Casagrande

Based on Group Index

Uses equilateral triangle

Based on particle size only

• Developed by Casagrande

• Based on Group Index

• Uses equilateral triangle

• Based on particle size only

Multiple Choice

Which type of bitumen is suspended in water using an emulsifying agent?

• Tar

• Cutback bitumen

• Bitumen emulsion

• Road oil

Multiple Choice

The tack coat is applied to ensure a bond between old and new pavements.

• True

• False

Multiple Choice

What is the minimum thickness of compacted subgrade for NH and SH?

• 100 mm

• 200 mm

• 300 mm

• 500 mm

Multiple Choice

Which type of pavement has maximum deflection?

• Flexible pavement

• Rigid pavement

• Semirigid pavement

• Composite pavement

Multiple Choice

Which layer of pavement directly sustains wheel load stress?

• Subgrade

• Subbase

• Base course

• Wearing course

Dropdown

​ The design speed is defined as

​ ​

​

Select answer

Multiple Choice

Which road structure is commonly used to carry traffic over another road?

• Causeway

• Flyover

• Primer

• Patch repair

Multiple Choice

The Flash Point is the maximum temperature at which vapours catch fire.

• True

• False

Dropdown

​

Select answer

Which type of bitumen is most suitable for maintenance work during rainy seasons?

Multiple Choice

Footpaths are provided along urban roads to improve vehicular speed.

• True

• False

Multiple Choice

Which test on bitumen determines the temperature at which it starts to soften?

• Ductility test

• Flash point test

• Penetration test

• Softening point test

Multiple Choice

Assertion (A): Flexible pavements have maximum deflection.
Reason (R): Flexible pavements have maximum flexural strength.

• Both A and R are true and R is the correct explanation of A

• Both A and R are true and R is not the correct explanation of A

• A is true,R is false

• A is false,R is true

Match

Match the following

• Rapid curing

• Medium curing

• Slow curing

• Bitumen emulsion

Solvent:naphtha

Solvent:kerosene

Solvent :gas oil

Bitumen suspended in water

• Solvent:naphtha

• Solvent:kerosene

• Solvent :gas oil

• Bitumen suspended in water

Multiple Choice

Which test is used to determine the load-bearing capacity of soil?
a) CBR Test
b) Impact Test
c) Shape Test
d) Softening Point Test

• CBR test

• Impact test

• Shape test

• Softening point test

Multiple Choice

Assertion (A): Prime coat binds dust and plugs voids.
Reason (R): Prime coat improves adhesion between base and surface course.

• Both A and R are true and R is the correct explanation of A

• Both A and R are true and R is not the correct explanation of A

• A is true,R is false

• A is false,R is true

Multiple Choice

Which is not included in low-cost roads:

• Earth road

• Kankar roads

• Moo rum roads

• Rigid pavement

Multiple Choice

Which material is primarily used in the Water Bound Macadam (WBM) method?

• Cement concrete

• Crushed aggregate and stone dust

• Tar macadam

• Bitumen emulsion

Multiple Choice

Which type of road is designed to get submerged during floods?

• Trunk road

• Ring road

• Causeway

• Bypass road

Multiple Choice

Mastic asphalt provides a voidless, impermeable surface

• True

• False

Match

Match the following

• Bypass road

• Ring road

• Loop road

• Trunk road

Avoid congested areas

Free traffic around urban area

Alternative to avoid obstruction

Main highway of a country

• Avoid congested areas

• Free traffic around urban area

• Alternative to avoid obstruction

• Main highway of a country

Multiple Choice

Which of the following is used to safely guide traffic at intersections?

• Causeway

• Guide island

• Kerb

• None