The stripped-off asphalt can be milled to a fine aggregate and mixed with fresh hot bitumen before being laid and compacted again. Special machines are then required to strip off the asphalt top layer to a depth where the substructure is stable. If the surface is not repaired and resealed with regular maintenance, the top layer of aggregate will become loose and cause the roadway to become slippery. The weathering effects cause the asphalt to lose the organic volatiles and cause it to become brittle and crack. The material can be shaped and compacted on top of a well-prepared surface to provide an ideal surface to provide vehicle tires with optimal grip and not generate road noise. The asphalt is heated up to be pliable and workable when laying fresh or recycled roadways. Asphalt is ideal for laying roadway surfaces. This blackish-brown sticky substance is also known as bitumen and can be mixed with stone aggregate, fillers, and stabilizers to yield asphalt or Tarmacadam (Tarmac). Road works dismantling of asphalt pavement for future re useĪsphalt is the residue of the process of refining crude oil.
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