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A layer of asphalt concrete paving.

Asphalt is a sticky, black and highly viscous liquid or semi-solid, composed almost entirely of bitumen.[1] It is present in most crude petroleums and in some natural deposits.

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References[change | change source]

  1. Holleran, Glynn and Jeffrey Reed. "Asphalt Emulsions - Definition, Manufacture and Usage"; retrieved 2012-4-25.

Other websites[change | change source]

Media related to Asphalt at Wikimedia Commons Media related to Bitumen at Wikimedia Commons