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  2. Pitch (resin) - Wikipedia

    en.wikipedia.org/wiki/Pitch_(resin)

    Natural bitumen pitch, from the tar pit above the McKittrick Oil Field, Kern County, California. Pitch is a viscoelastic polymer which can be natural or manufactured, derived from petroleum, coal tar, [1] or plants. Pitch produced from petroleum may be called bitumen or asphalt, while plant-derived pitch, a resin, is known as rosin in its solid ...

  3. Bitumen - Wikipedia

    en.wikipedia.org/wiki/Bitumen

    Mastic asphalt is a type of asphalt that differs from dense graded asphalt (asphalt concrete) in that it has a higher bitumen content, usually around 7–10% of the whole aggregate mix, as opposed to rolled asphalt concrete, which has only around 5% asphalt. This thermoplastic substance is widely used in the building industry for waterproofing ...

  4. Bituminous waterproofing - Wikipedia

    en.wikipedia.org/wiki/Bituminous_waterproofing

    Bitumen (asphalt or coal-tar pitch) is a material made up of organic liquids that are highly sticky, viscous, and waterproof. [1] Systems incorporating bituminous-based substrates are sometimes used to construct roofs, in the form of "roofing felt" or "roll roofing" products.

  5. Chipseal - Wikipedia

    en.wikipedia.org/wiki/Chipseal

    Adding chip seal over gravel is about 25% of the price of resurfacing with asphalt, $170,000 for a 4-mile project done in Minnesota [6] compared to $760,000 had it been redone with asphalt. The surface lasts for 5–7 years. Patch work can be done with a bucket of tar sealer and more chip seal over the top.

  6. Asphalt concrete - Wikipedia

    en.wikipedia.org/wiki/Asphalt_concrete

    Asphalt batch mix plant A machine laying asphalt concrete, fed from a dump truck. Asphalt concrete (commonly called asphalt, [1] blacktop, or pavement in North America, and tarmac or bitumen macadam in the United Kingdom and the Republic of Ireland) is a composite material commonly used to surface roads, parking lots, airports, and the core of embankment dams. [2]

  7. Road surface - Wikipedia

    en.wikipedia.org/wiki/Road_surface

    The asphalt millings are blended with asphalt emulsion, foamed bitumen, or soft bitumen to rejuvenate the aged asphalt binder. [34] [36] New aggregate may also be added. The resulting asphalt mix is paved and compacted. It may serve as the top pavement layer, or it may be overlaid with new asphalt after curing. [37]

  8. Investors face 'a uniquely high amount of uncertainty' in ...

    www.aol.com/finance/investors-face-uniquely-high...

    Traders work on the floor of the New York Stock Exchange during morning trading on Aug. 23, 2024, in New York City. (Michael M. Santiago/Getty Images) (Michael M. Santiago via Getty Images)

  9. Asphalt plant - Wikipedia

    en.wikipedia.org/wiki/Asphalt_plant

    Asphalt plants for road construction Asphalt plant in Belgium The manufacture of coated roadstone demands the combination of a number of aggregates , sand and a filler (such as stone dust), in the correct proportions, heated, and finally coated with a binder, usually bitumen based or, in some cases tar , although tar was removed from BS4987 in ...

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