Bitumen penetration grade 85/100
Definition of bitumen penetration grade 85/100
Bitumen Penetration Grade 85/100 is a standard penetration grade Bitumen usually used as a Paving Grade Bitumen suitable for road construction and for the production of asphalt pavements with superior properties. This grade of Bitumen is mainly used in the manufacture of hot mix asphalt for bases and wearing courses. Penetration Grade Bitumen supplied by RABIT (RAHA BITUMEN) Co. is petroleum grade bitumen, manufactured from fractional / vacuum distillation of crude oil. The Bitumen supplied by RABIT Trading Co. This bitumen is produced through aeration on vacuum bottom (the raw material used for making bitumen left in vacuum distillation column in oil refineries) in bitumen production units. Its penetration grade ( the measure of bitumen hardness) is between 85 to 100.
Penetration Grade bitumens are specified by the penetration and softening point test. The 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. This unique temperature/ viscosity relationship is important when determining the performance parameters such as the adhesion, rheology, durability and application temperatures of bitumen.
The Bitumen mode is dependent on temperature. The temperature-vs-stiffness relationship of bitumen is dependent on the type of crude oil and its refining method. Bitumen penetration grade 85/100 is semi hard penetration grade bitumen used as a paving grade bitumen which is suitable for road construction and repair. It is also used for the production of asphalt pavements with the below technical specification. This grade of bitumen is mainly used in the manufacturing of hot mix asphalt for bases and wearing courses. Bitumen 85/100 is one of the most used bitumen grades and it’s a basic material for all other bituminous products.
Penetration determines the hardness of bitumen by measuring the depth to which a standard loaded the needle will vertically penetrate in 5 seconds, in a sample of bitumen maintained at a temperature of 25 degrees Celsius.
Application of bitumen penetration grade 85/100
Bitumen 85/100 is suitable for road construction and for the asphalt pavements with superior properties. This type of bitumen used in the manufacture of hot mix asphalt for bases and wearing courses and the main usage of this product is used in the spaying and chip application. The bitumen is provided during the presses of oxidation of vacuum bottom in bitumen production units. Due to its relatively low air blowing and penetration, It is used in areas with cold weather for asphalting and insulation. It is not cracked in low temperatures.
Guaranty and safety of bitumen penetration 85/100
RABIT (RAHA BITUMEN) Company guaranty the quality of bitumen penetration grade 85/100 with the arrangement of the international inspectors to check quality and quantity of the bitumen penetration grade 85/100 during the loading to the vessel and controlling the production by QC by batch test report before shipping. RABIT Company guarantees the quality to meet with ASTM.
Specification of bitumen penetration grade 85/100
| Bitumen 85/100 | Test method | Unit | Specification |
| Specific gravity @ 25°c | ASTM D70 | Kg/cm3 | 1.01/1.06 |
| Penetration @ 25°c | ASTM D5 | mm/10 | 85/100 |
| Softening point °c | ASTM D36 | °C | 41/49 |
| Ductility @25 °c | ASTM D113 | Cm | 100 min |
| Loss on heating(wt) % | ASTM D6 | wt % | 0.2 max |
| Drop in penetration after heating % | ASTM D5-D6 | % | 20 max |
| Flash point c | ASTM D92 | °C | 250 min |
| Solubility is CS2(wt) % | ASTM D4 | wt % | 99.5 min |
| Spot test | A.A.S.H.O.T102 | Negative |
