construction bitumen

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• 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 — Bi*tu men, n. [L. bitumen: cf. F. bitume. Cf. {B[ e]ton}.] 1. Mineral pitch; a black, tarry substance, burning with a bright flame; Jew s pitch. It occurs as an abundant natural product in many places, as on the shores of the Dead and Caspian… …   The Collaborative International Dictionary of English

• bitumen — noun /ˈbɪtjumɛn/ a) Mineral pitch; a black, tarry substance, burning with a bright flame; Jew’s pitch. It occurs as an abundant natural product in many places, as on the shores of the Dead and Caspian Seas. It is used in cements, in the… …   Wiktionary

• BITUMEN —    Latin word for naturally occurring semisolid hydrocarbon (petroleum). Bitumen springs were found in several palaces in Mesopotamia, and the substance (kupru or ittu in Akkadian) was used primarily for waterproofing vessels and containers, as… …   Historical Dictionary of Mesopotamia

• Roof construction — This article is about house construction that consists of beams and an outer weatherproof skin, as found on most domestic architecture. Such roofs may take a number of different shapes. Construction of a ridged roofA simple ridged roof consists… …   Wikipedia

• building construction — Techniques and industry involved in the assembly and erection of structures. Early humans built primarily for shelter, using simple methods. Building materials came from the land, and fabrication was dictated by the limits of the materials and… …   Universalium

• Sod roof — A sod roof or turf roof is a traditional Scandinavian type of roof covered with sod on top of several layers of birch bark on gently sloping wooden roof boards. Until the late 19th century it was the most common roof on rural log houses in large… …   Wikipedia

• 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

• History of the petroleum industry in Canada (oil sands and heavy oil) — Canada s oil sands and heavy oil resources are among the world s great petroleum deposits. They include the vast oil sands of northern Alberta, and the heavy oil reservoirs that surround the small city of Lloydminster, which sits on the border… …   Wikipedia

• 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