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Bleeding (roads)

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Bleeding (roads)

Bleeding or flushing is shiny, black surface film of asphalt on the road surface caused by upward movement of asphalt in the pavement surface.[1][2] Common causes of bleeding are too much asphalt in asphalt concrete, hot weather, low space air void content and quality of asphalt.[3]

Bleeding is a safety concern since it results in a very smooth surface, without the texture required to prevent hydroplaning.

See also

References

  1. ^ http://www.pavementinteractive.org/article/bleeding/
  2. ^ http://www.cmrpc.orgs/default/files/fieldguide.pdf
  3. ^ http://classes.engr.oregonstate.edu/cce/winter2012/ce492/Modules/09_pavement_evaluation/09-7_body.htm#bleeding


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