Meaning of Bitumen 60/70
Bitumen 60/70 means penetration of bitumen is between 60 to 70 and compare bitumen 80/100 which means penetration is between 80 to 100 is harder since needle penetrating less.This grade of bitumen is made by blowing of hot air to vacuum bottom and as much as heating the raw material bitumen will get hard and penetration will decrease.It is mostly using in road construction, paving and waterproofing also coating.
How you buy high quality bitumen 60/70?
Quality of bitumen has many items to check but after passing the penetration and you make sure it is in order with very simple test you can recognize the quality is good or bad:
- Less smell means low sulphur(somebody adding sulphur to bitumen to get weight)
- Viscosity in range(Somebody using vacuum resin instead of vacuum bottom and harm quality)
- Spot test must be negative( Simple factories heating by direct fire and burning the bitumen)
From which factory you have to buy bitumen 60/70
There are four types of bitumen factories and price also different cause of investment and outcome capacity
1. If factory produce bitumen continuously the price is higher and quality is the best and TFOT and ageing test of bitumen also will pass (Our factory is producing base on continues technology)
Bitumen factory continuous production
2. Batching production unit and using hot oil circulating technology in the blowning tower to prevent burning bitumen and just one point heating.
Bitumen factory hot oil circulation heating
3. Batching producing with direct heating but there is chance to burn the bitumen
Blending production which is last option for the buyer since it has always problem on viscosity
Bitumen factory blending
What is bitumen 60/70?
Bitumen 60/70 has the highest-boiling point, heaviest and most polar fraction from the vacuum distillation of crude oil. Bitumen 60 70 is composed of asphaltene and maltene. The heavy insoluble asphaltene molecules give bitumen 60/70 its body and softening point while the maltenes are oily and make asphalt flexible. Asphaltene molecules are soluble in aromatic solvents like toluene but insoluble in heptane. The maltenes are heptane-soluble molecules and less aromatic.
Softening point and penetration of bitumen 60/70
Penetration grade bitumen supplied by ATDM is pure petroleum grade bitumen, manufactured from vacuum bottom by passing hot air. The bitumen supplied by ATDM is produced from remain of crude oil after cracking and removing hydrocarbon. Penetration grade bitumen 60/70 has penetration between 60~70 desi-millimeter and softening point between 48 ~ 52C. The material has a thermoplastic property which is like as synthetic resin material which gets softer with heating and hardens when cooled. This grade of bitumen 60/70 has very strong viscosity compare to other grades.
Guaranty/warranty of bitumen 60/70
ATDM guaranty the quality of bitumen 60/70 with arrangement of international inspector to check quality and quantity of the bitumen during the loading to vessel and controlling the production by QC by batch test report before shipping. ATDM guaranty the quality to meet with ASTM/EN 12591.
Packing of bitumen 60/70
It is 180 (+/-2.5) Kg New Steel Drum, Original Package,98cm heright,50cm diameter,10cm dip and 1cm lip also 0.6 mm thickness of Drum // Each 20” FCL: 110 Drums
Specification of penetration bitumen 60/70
Specific gravity @ 25/25 cg
Penetration @ 25 c
Softening point c
Ductility @25 c
Loss on heating(wt) %
Drop in penetration after heating %
Flash point c
Solubility is CS2(wt) %