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Home| Questions|Q 71196
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Answered
Varun Kumar
Varun Kumar
Asked: June 4, 20222022-06-04T17:10:19+05:30 2022-06-04T17:10:19+05:30In: Highway Engineering

Explain in detail the maintenace of bituminous roads

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      govardhan karnam
      2022-06-05T16:35:55+05:30Added an answer on June 5, 2022 at 4:35 pm

      Bituminous roads are the most widely used. It is made up of flexible pavement. Bituminous roads frequently necessitate routine maintenance.

      1. Patching Pot Holes:

      Potholes form on the road surface because of excessive traffic, varying climatic conditions, a variety of traffic, and poor quality, and must be treated.
      In the case of fixing potholes, they are first carved square or rectangular in shape up to the required depth. A suitable tack coat or bituminous coat is applied after the holes have been cleaned and broomed adequately.
      After that, a premixed patching mix is poured in the holes with crowbars, and the surface is rammed and rolled. The finished surface or potholes are kept slightly above the average surface for traffic compaction. In the winter, cut back or emulsions are utilized as a replenishing substance to fill potholes.

      2. Patching Ruts:

      Ruts are longitudinal depressions or cuts generated in flexible pavement.

      A continuous trench is dug around the ruts to establish a sturdy foundation for the patch when repairing ruts. After then, patching is done in the same way as potholes are patched.

      3. Patching Corrugations:

      Corrugations are installed on bituminous roads to prevent bleeding, which is common during the summer. This can be remedied by cutting the crests or high ridges of corrugations.

      Up to the depth of the depressions, which are cleaned, painted, and filled with the premix material.

      4. Base Repairs:

      This repair falls under the category of preventative maintenance, in which the root cause of the problem is established first, followed by the best solution. If it is determined that the problem is caused by a lack of base course thickness, the deficiency is fixed or addressed by adding more surface thickness.

      When repairing a base, the existing surface is first loosened by scarifying it to the full depth.

      The new base is then laid down in layers no thicker than 75 mm and finished with a surface finish.

      5. Surface Treatment:

      Bituminous surface bleeding is managed by applying a layer of blotting material as soon as it appears to be bleeding. Rolling is done, if necessary, for example, with aggregate chippings or coarse sand.

      When the fractures on the road surface have formed, a renewal coat or seal coat is applied.

      6. Re-surfacing:

      Resurfacing is the process of renewing or surface dressing a pavement that has been significantly damaged or has reached the end of its functional life.

      If the present wearing course of a bituminous road is nearly or completely worn out, the road becomes unfit for traffic and must be completely resurfaced.

      Potholes are repaired using a replenishing substance such as cut back or emulsions in the winter. After that, a light tack coat is applied to the surface, followed by surface dressing.

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