Correct Answer - Option 1 :
pot holes
Explanation:
Types of a defect in the flexible pavement:
- Surface defect
- Crack
- Deformation
- Disintegration
Types of distress |
Symptoms |
A) Surface defect |
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- Collection binder on the surface
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- Presence of alternate lean and heavy lines of bitumen
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- Loss of aggregate or presence of fine cracks
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B) Cracks |
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- Short and fine cracks at close intervals on the surface
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- Interconnected cracks forming a series of small block
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- Crack on a straight line along the road
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- Cracks near and parallel to pavement edges
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- Cracks in transverse direction or inter-connected cracks forming a series of large blocks
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- Sympathetic crack over joints and cracks in the pavement underneath
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C) Deformation |
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- Formation of crescent-shaped cracks pointing in the direction of the thrust of wheels.
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- Longitudinal depression in the wheel crack
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- Formation of regular undulations
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- Localized bulging of pavement surface along with crescent-shaped crack
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- Localized shallow depression
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- Large deformation of pavement
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D) Disintegration |
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- Separation of bitumen from aggregates in the presence of moisture
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- Rough surface with loss of aggregates in some portions
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- Failure of binder to hold the aggregates shown up by pockmarks of eroded areas on the surface
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- The appearance of bowl-shaped holes, usually after rain.
- This indicated progressive disintegrations of bituminous premix carpet surfacing by loss of aggregates.
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- Irregular breakage of pavement edges.
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