Penetration Grade Bitumen 10-20
Penetration Grade Bitumen 10-20 has a penetration degree ranging from 10 to 20 deci-millimeter as well as a softening point between 58 and 66 ° C. This type of penetration bitumen has higher viscosity and is harder than other grades. It is mainly used in very hot areas that require more heat tolerance.
Penetration Grade Bitumen 40-50
Penetration Grade Bitumen 40-50 has a penetration degree ranging between 40 and 50 deci-millimeter and a softening point from 52 to 60 °C. This type of penetration bitumen is relatively hard and is mainly used in tropical areas.
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Penetration Grade Bitumen 60-70
Penetration Grade Bitumen 60-70 is the most widely used grade of penetration bitumen in road construction and other industrial areas. This grade of penetration bitumen has a degree of penetration ranging from 60 to 70 deci-millimeter and a softening point between 49 and 56 oC. This grade is mainly used in areas with mild climates.
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Penetration Grade Bitumen 85-100
Penetration Grade Bitumen 85-100 is also among the most widely used grades of penetration bitumen in road construction and other industrial areas. This grade of penetration bitumen has a degree of penetration ranging between 85 and 100 deci-millimeter and a softening point from 45 to 52 oC. It is mainly used in cold regions.
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Penetration Grade Bitumen 90-130
Penetration Grade Bitumen 90-130 has a penetration degree ranging from 90 to 130 deci-millimeter and a softening point between 43 and 47 °C. This type of penetration bitumen is commonly used for road repairs in cold regions.
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Penetration Grade Bitumen 160-220
Penetration Grade Bitumen 160-220 has a penetration degree ranging from 160 to 220 deci-millimeter and a softening point from 35 to 43 °C. This type of penetration bitumen is commonly used in repairing damaged roads and surfaces and making emulsion bitumen and insulation industry in very cold areas.
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Viscosity Grade Bitumen
Viscosity Grade (VG) bitumen is a standard grade of bitumen used for road construction and asphalt production with superior properties. Due to the viscoelastic behavior of this group of bitumen, stronger and more flexible connections will be made between the bitumen and the building materials, depending on the mixing speed of the materials. Showing the characteristics of bitumen, viscosity is more than the other two common properties, i.e. softening point and penetration. Therefore, viscosity-based classification (degree of fluidity) is presented separately, and codes AC-2.5 to AC-40 are employed to classify the properties of bitumen. Different types of bitumen are classified according to their absolute viscosity at 60 °C in poise and/or kinematic viscosity at 135 °C in centistokes.
These types of bitumen show thermoplastic properties that soften the bitumen at higher temperatures and become harder at lower temperatures. This temperature-viscosity relationship is uniquely important in determining functional parameters such as adhesion, rheology, durability, and the temperature application of bitumen. Regarding the viscosity grade bitumen, there is more emphasis on the ductility of the product.
Viscosity Grade Bitumen: VG-10 Bitumen
This type of bitumen is utilized to stain cracked surfaces and spray various applications. It can be an alternative for the penetration grade bitumen 80-100 in very cold areas. This category of bitumen is also employed to produce emulsion and modified bitumen.
Viscosity Grade Bitumen: VG-20 Bitumen
This type of bitumen is mostly used in cold climates and highlands.
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Viscosity Grade Bitumen: VG-30 Bitumen
This category of bitumen is used primarily for the surfaces that undergo very heavy loads and need to withstand high traffic loads. It can be used instead of bitumen grade 60-70.
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Viscosity Grade Bitumen- VG-40 Bitumen
This category of bitumen is used instead of penetration grade bitumen 40-30 in areas with high traffic loads and pressure such as intersections, near road tolls, and parking lots of heavy vehicles. Due to the high viscosity of this type of bitumen, it can resolve the problems of surface tension, resistance, higher temperatures, and heavy traffic loads.
