Penetration Bitumen Grade is a standard bitumen usually used as a Paving Grade Bitumen essential for road construction also for asphalt pavements with superior properties. In addition, it’s very important once it bounds the aggregates and creates a unique cohesion and stability to the bituminous mix.
Furthermore, Bitumen is mainly used in the manufacture of hot mix asphalt for bases and wearing courses.
pub-ltd Penetration Grade Bitumen is petroleum grade bitumen, manufactured from fractional / vacuum distillation of crude oil. The Bitumen supplied by Pars Universal Bitumen is produced from vacuum residue (short residue) feedstock.
Penetration Grade bitumens also specified by penetration and softening point test. Designation is by penetration range only. The penetration grade bitumens have a thermoplastic property which causes the material to soften at high temperatures and to harden at lower temperatures. In addition, this unique temperature/viscosity relationship is important when determining performance parameters such as adhesion, rheology, durability also uses temperatures of bitumen.
Global Leading Bitumen ( pub-ltd ) supplies all Penetration Graded Bitumen in correspondence to ASTM D946-09 and EN 12591-2009, including:
ASTM D946-09 Grades:
Bitumen Penetration Grade 40-50
EN 12591-2009 Grades:
Bitumen Penetration Grade 20/30
Iran penetration bitumen has high quality in the world. It is famous to NIOC Iran bitumen and available in different grades, packing between 10000 MT to 12000 MT monthly.
Available packing is new steel drum, polybag, Bulk bitumen, Bitutank.
Global Leading Bitumen ( pub-ltd ) also is member of syndicate Iranian bitumen exporter (bitumen 40/50, 60/70, 80/100 and 160/220) partner of most drumming factories which has owned export license for exporting all grades of bitumen as per of ASTM standard
Iran Penetration Bitumen?
It produced from crude oils through fractional distillation. Crude oil also heated to temperatures of between 300 and 350C. Also fed into a distillation column allowing the lightest fractions of crude to separate, through vaporization, from the heavier fractions, which remain liquid.
In addition, higher boiling point fractions are drawn – off by heat exchange and enter a vacuum distillation column. Also this process produces a “short residue” used to manufacture several grades. The pressure and temperature conditions within vacuum process will determine hardness of the short residue. Also as such the grade of produced.
Furthermore short residue maybe modified by air blowing. In which air is passed through residue at temperatures of 250 – 300 degrees Celsius.
The above are typical Penetration or Paving Grades of bitumen. Additional processing provides other grades of bitumen products such as:
Oxidized bitumen – produced by more vigorous air blowing; they are more ‘rubber like’ and less temperature susceptible than the paving grades.
Hard Grade bitumen – harder paving grades.
Cutback bitumen – blends of penetration bitumen with solvent such as kerosene.
Emulsions – stabilized suspensions of bitumen in water.
Polymer Modified Bitumen – mixtures of selected bitumen with polymers such as thermoplastics or elastomers.
Bitumen Penetration specification: