1. In a Bituminous pavement, alligator cracking is mainly due to
- inadequate bearing course
- inadequate thickness of sub-base course of pavement
- use of excessive bituminous material
- fatigue causing from repeated stress application
2. Which of the following is not a cause of alligator cracking in flexible pavements?
- Relative movement of pavement layer material
- Repeated application of heavy wheel loads
- Swelling or shrinkage of subgrade or other layers due to moisture variation
- Sliding of side slopes
3. Alligator or map cracking is the common type of failure in
- Bituminous surfacing
- Water Bound Macadam (WBM)
- Concrete pavements
- Gravel roads
4. Reflection cracking is observed in
- flexible pavement
- bituminous overlay over cement concrete surface
- rigid pavement
- rigid overlay over flexible pavement
5. A common type of failure which occurs due to the relative movement of pavement layer
- Alligator cracking
- Shear failure
- Consolidated of pavement layers
- Reflection cracking
6. Which one of the following causes raveling in bituminous pavement?
- Use of soft bitumen
- Use of open graded aggregates
- Excessive bitumen content
- Low bitumen content
7. When the bituminous surfacing is done on already existing black top road, or over existing cement concrete road, the type of treatment to be given is
- Tack coat
- Seal coat
- Spray of emulsion
- Prime coat
8. The general requirement in constructing a reinforced concrete road is to place a single layer of reinforcement
- near the bottom of the slab
- near the top of the slab
- at the middle
- equally distributed at the top and the bottom
9. Which of the following is not a distress observed in flexible pavements?
- Alligator cracking
- Mud pumping
- Pot hole formation
10. Consider the following sentence:
Bleeding in a bituminous mix refers to the appearance of excess bitumen on the surface over a period of time on account of ________________ in the mix.
Identify the CORRECT option from among those given below to fill in the blank in the above sentence.
- seepage of water through the road surface displacing the bitumen
- action of traffic load and sub grade up thrust
- action of traffic load and there being inadequate voids
- action of traffic load and there being excess voids
11. Stripping of asphalt pavement is primarily due to
- excessive asphalt content in mixture
- moisture damage
- fatigue damage
- use of less tougher aggregate
12. Which one of the following defects indicates progressive disintegration of bituminous premix carpet surfacing by loss of aggregates?
- Pot holes
- Edge breaking
13. Mud Jacking is a type of failure of rigid pavements due to
- stagnation of water and hence softening of clayey subgrade.
- the rigid pavement transformed into the form of mud.
- jack used to lift the mud beneath the rigid pavement.
- mud injected beneath the rigid pavement.
14. Bump integrator equipment is used to
- measure pavement surface condition
- find pavement deflection
- fix camber value
- find design speed
15. The desirable thickness of the bituminous mix specimen to be subjected to Marshall Stability Testing is
- 63.5 mm
- 65.3 mm
- 68.3 mm
- 63.8 mm