Bitumen Grade 60/70
Bitumen is a non-crystalline viscous material, black or dark brown, which is substantially soluble in carbon disulphide (CS2), possessing adhesive and water-proofing qualities. It consists essentially of hydrocarbons and would typically comprise at least 80% carbon and 15% hydrogen, the remainder being oxygen, sulphur, nitrogen and traces of various metals.
Penetration Test determines the hardness of Bitumen by measuring the depth ( in tenths of a mm) to which a standard, and loaded needle will vertically penetrate in 5 seconds, a sample of Bitumen maintained at a temperature of 25 deg C ( 77deg F). Hence the softer the bitumen, the greater will be its number of penetration units. (80/100, 60/70, 40/50)
Bitumen is used for road construction, surfacing airfield runways and taxi tracks, hydraulic applications such as canal lining, river bank protection, dam construction and sea defenses.
It is also used in industrial applications like roofing, felt manufacture, printing inks, electrical cable, junction boxes, mastic for flooring, water proofing for terraces, duplex paper manufacture, etc. Sufi Trade Links Ltd. markets Bitumen in one grades namely 60/70,
Chemical of bitumen