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Bitumen

Bitumen

Bitumen Viscosity Grade
Viscosity Grade Bitumen (Asphalt) is a Bitumen grade mostly used as a paving grade and it is suitable for road construction and for asphalt pavements producing premier attributes. VG Bitumen is usually used in the production of hot-mix asphalt. Bitumen Viscosity Grade is classified into VG–10, VG–20, VG–30, and VG–40. Viscosity Grade Bitumen is petroleum-grade bitumen produced from fractional vacuum bottom which comes from the distillation of crude oil where the appliance and behavior change according to its temperature. ASTM International, formerly known as the American Society for Testing and Materials, is an international standards organization that develops and publishes voluntary consensus technical standards for a wide range of materials, products, systems, and services. Some 12,575 ASTM voluntary consensus standards operate globally. It is specified by ASTM Standard D3381–09 and AASHTO M226–80 (2008). VG Bitumen specifications cover by Viscosity at 60 ºC (140 ºF).
Bitumen Viscosity Grade
Other Types of Bitumen
1) Bitumen Primer Grade
Bitumen Primer grade is a bitumen-based primer for the surface conditioning of concrete and timber substrates prior to the application of heat-fused APP and SBS-modified bitumen membranes such as UniTorch.
2) Bitumen Oxidized Grade
Oxidized Bitumen or Blown Asphalt or Blown Bitumen is produced by either a Continuous or Staggered Blowing Process. Heated Penetration Grade Bitumen under a controlled environment is blown with air which controls the oil content in the Bitumen while it oxidized. The different grades for suited applications produced are designated by two numbers to indicate the midpoints of their softening point and penetration ranges.
3) Bitumen Performance Grade
Performance Grade bitumen is a type of bitumen that is graded according to its Performance at different alternating temperatures. There is a tendency to divide PG grade into two divisions of high-temperature and low-temperature pavement services.
4) Bitumen Cutback Grade
Bitumen Cutbacks or Asphalt cutbacks use petroleum solvents for dissolving asphalt cement. The solvents are variously called distillate, diluents or cutter stock. If the solvent used in making the cutback asphalt is highly volatile, it will quickly escape by evaporation. Solvents of lower volatility evaporate more slowly.
5) Bitumen Pentration Grade
Bitumen Penetration or Asphalt is a sticky, black, highly viscous liquid or semi-solid form of petroleum. It may be found in natural deposits or may be a refined product, and is classed as a pitch. Before the 20th century, the term Asphaltum was also used. The word is derived from the Ancient Greeks. The Pitch Lake is the largest natural deposit of asphalt in the world, estimated to contain 10 million tons. It is located in La Brea southwest of Trinidad.
6) Bitumen Emulsion Grade
Bitumen Emulsion grade is a liquefied type of bitumen with a low viscosity. By dispersing bitumen in water and adding an emulsifier, ordinary bitumen turns into a low-viscosity liquid that can easily be used in a variety of applications, including repairing and maintaining roads, waterproofing, spraying, etc.
7) Bitumen Paving Grade
Paving Bitumen or Asphalt concrete (commonly called Asphalt, Blacktop, or pavement in North America, and tarmac, bitumen macadam, or rolled asphalt) is a composite material commonly used to surface roads, parking lots, airports, and the core of embankment dams. Asphalt mixtures have been used in pavement construction since the beginning of the twentieth century. It consists of mineral aggregate bound together with asphalt, laid in layers, and compacted.
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