Definition of bitumen penetration grade 40/50
Bitumen penetration grade 40/50 bitumen means the penetration value is in the range 40 to 50 at standard test conditions which commonly used as a Paving Grade. Bitumen is applicable for the production of hot mix asphalt for bases and pavements and for road construction. Penetration Grade Bitumen supplied by Petro Ayegh Espadana manufacture. 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 40 to 50. Bitumen is specified by the penetration and softening point test. Designing is by penetration range only. The penetration grade bitumen has 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 40/50 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 40/50 is one of the most used bitumen grades and it’s a basic material for all other bituminous products.
Application of bitumen penetration grade 40/50
Bitumen 40/50 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 road at tropical regions. the bitumen is provided during the presses of oxidation of vacuum bottom in bitumen production units. Due to its high air blowing and penetration, it is used in tropical areas with the Warm weather. It is not softened at high temperature and does not fail its qualities.
Guaranty and safety of bitumen penetration 40/50
Petro Ayegh Espadana Company guaranty the quality of bitumen penetration grade 40/50 with the arrangement of the international inspector to check quality and quantity of the bitumen penetration grade 40/50 during the loading to the vessel and controlling the production by QC by batch test report before shipping. PAE manufacture guarantees the quality to meet with ASTM.
Specification of bitumen penetration grade 40/50
|Specification||Unit||Test method||Bitumen 40/50|
|1.01/1.06||Kg/cm3||ASTM D70||Specific gravity @ 25°c|
|40/50||mm/10||ASTM D5||Penetration @ 25°c|
|52/60||°C||ASTM D36||Softening point °c|
|100 min||cm||ASTM D113||Ductility @25 °c|
|0.2 max||wt %||ASTM D6||Loss on heating(wt) %|
|20 max||%||ASTM D5-D6||Drop in penetration after heating %|
|250 min||°C||ASTM D92||Flash point °c|
|99.5 min||wt %||ASTM D4||Solubility is CS2(wt) %|