Bitumen is a thermoplastic material and its stiffness is dependent on temperature. The temperature-vs-stiffness relationship of bitumen is dependent on the source of crude oil and the method of refining. The Bureau of Indian Standards (BIS) introduced paving grade bitumen specifications (IS: 73- 1950) for the first time in the year 1950 and classified it on penetration. The specifications were revised in the years 1962 and 1992.
Brands
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Material (Grades)
VG 30 ; VG40
Customizations
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Advantages
VG-30 BITUMEN: VG-30 is primarily used to construct extra heavy duty Bitumen pavements that need to endure substantial traffic loads. It can be used in lieu of 60/70 Penetration grade.
VG-40 BITUMEN: VG-40 is used in highly stressed areas such as intersections, near toll booths and truck parking lots in lieu of old 30/40 Penetration grade. Due to its higher viscosity, stiffer Bitumen mixes can be produced to improve resistance to shoving and other problems associated with higher temperature and heavy traffic loads.
Applications
Road construction, pavement rehabilitation, Hot Mix Asphalt (HMA), Airport Runways and Taxiways, Bridge Decks, and other industrial uses where higher viscosity is required.
- VG-30 - most widely used type of bitumen in road construction, insulation, building construction industries, and also in the production of cutback bitumen. Suitable for hot regions.
- VG-40 – Suitable for areas with high traffic loads and for road construction in hot weather.