Highway Maintenance - IES Previous Year Questions

Updated upto IES 2022 

11. Which one of the following defects indicates progressive disintegration of bituminous premix carpet surfacing by loss of aggregates ?

[IES 2004]

  1. Potholes
  2. Edge breaking
  3. Ravelling
  4. Rutting
Answer: Option A
Explanation:
Potholes are bowl shaped cavities caused by the loss of surfacing as well as base course erosion. Bituminous premix carpet is a type of surface course.

12. A road surface is corrected by spreading a layer of dry sand in a thickness varying from 5 mm to 10 mm and rolling the surface by heavy rollers. Which one of the following maintenance works does it apply to ?

[IES 2007]

  1. Repairing of blow ups
  2. Repair of bleeding surface
  3. Sealing of joints and cracks 
  4. Repair of ruts and patches
Answer: Option A
Explanation:
Spreading a layer of dry sand in varying thickness over the road surface and rolling the surface with heavy rollers is carried out for repairing blow ups.

13.  Consider the following bituminous surfacings:

  1. SDBM
  2. PMC
  3. AC
  4. SD
  5. Mastic Asphalt (MA)

Which one of the following is the correct sequence in increasing order with respect to their performance and wearing qualities ?

[IES 2008]

  1. 2, 4, 1, 5, 3
  2. 4, 2, 1, 3, 5
  3. 1, 4, 3, 2, 5
  4. 4, 1, 2, 3, 5
Answer: Option B
Explanation:
The increasing order of performance and wearing qualities of various bituminous surfacings are as follows:
Surface dressing < Premixed carpet < Semi-dense bituminous Macadam < Asphaltic concrete < Mastic asphalt.

14.  Benkelman beam deflection method is used for design of _____ .

[IES 2014]

  1. Rigid overlays on flexible pavements 
  2. Flexible overlays on flexible pavements 
  3. Flexible overlays on rigid pavements
  4. Rigid overlays on rigid pavements
Answer: Option B
Explanation:
Benkelman beam deflection method is used for
  • Evaluation of structural capacity of existing flexible pavements.
  • Estimation and design of flexible overlays for strengthening of any weak flexible pavement.
  • Measurement of deflection of flexible pavement under moving wheel loads.

15.  Statement (I): Bituminous roads disintegrate even with light traffic, but such failures are not exclusively attributable to wrong surface treatment.

Statement (II): Improper preparation of the subgrade and the foundation is often responsible for this dis-integration.

[IES 2018]

  1. Both Statement (I) and Statement (II) are individually true and Statement (II) is the correct explanation of Statement (I)
  2. Both Statement (I) and Statement (II) are individually true but Statement (II) is not a correct explanation of Statement (I)
  3. Statement (I) is true but Statement (II) is false
  4. Statement (I) is false but Statement (II) is true
Answer: Option C
Explanation:
Disintegration of bituminous roads occurs due to
  • Improper coating of bitumen over the surface of aggregates
  • Heavy rainfall
  • Heavy traffic
  • Improper bituminous mix design
Improper preparation of subgrade and foundation will not result in disintegration. But, it causes rutting or consolidation of the layers of flexible pavement.
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