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mixture of tar and bitumen

См. также в других словарях:

  • Bitumen — is a mixture of organic liquids that are highly viscous, black, sticky, entirely soluble in carbon disulfide, and composed primarily of highly condensed polycyclic aromatic hydrocarbons. Naturally occurring or crude bitumen is a sticky, tar like… …   Wikipedia

  • bitumen — bituminoid /buy tooh meuh noyd , tyooh , bi /, adj. /buy tooh meuhn, tyooh , bi , bich oo /, n. 1. any of various natural substances, as asphalt, maltha, or gilsonite, consisting mainly of hydrocarbons. 2. (formerly) an asphalt of Asia Minor used …   Universalium

  • bitumen — noun Etymology: Middle English bithumen mineral pitch, from Latin bitumin , bitumen Date: 15th century 1. an asphalt of Asia Minor used in ancient times as a cement and mortar 2. any of various mixtures of hydrocarbons (as tar) often together… …   New Collegiate Dictionary

  • roads and highways — ▪ transportation Introduction       traveled way on which people, animals, or wheeled vehicles move. In modern usage the term road describes a rural, lesser traveled way, while the word street denotes an urban roadway. Highway refers to a major… …   Universalium

  • tarmacadam — /taməˈkædəm / (say tahmuh kaduhm) noun 1. a road surfacing mixture consisting of small stones or gravel bound together with tar or a mixture of tar and bitumen. –adjective 2. made of or having a surface of such a mixture. {tar1 + macadam} …  

  • tarmacadam — /tahr meuh kad euhm/, n. a paving material consisting of coarse crushed stone covered with a mixture of tar and bitumen. [1880 85; TAR1 + MACADAM] * * * …   Universalium

  • Asphalt — Note: The terms bitumen and asphalt are mostly interchangeable, except where asphalt is used as an abbreviation for asphalt concrete For other uses, see Asphalt (disambiguation). Natural bitumen from the Dead sea …   Wikipedia

  • Oil sands — The Athabasca oil sands in Alberta, Canada, are a very large source of bitumen, which can be upgraded to synthetic crude oil. Bituminous sands, colloquially known as oil sands or tar sands, are a type of unconventional petroleum deposit. The… …   Wikipedia

  • Petroleum — For other uses, see Petroleum (disambiguation). Proven world oil reserves, 2009 …   Wikipedia

  • Early thermal weapons — were devices or substances used in warfare during the classical and medieval periods (approx 8th century BC until the mid 16th century AD) which used heat or burning action to destroy or damage enemy personnel, fortifications or territories.… …   Wikipedia

  • Asphalt concrete — Asphalt concrete. As shown in this cross section, many older roadways are …   Wikipedia

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