To grade the bitumen based on viscosity BIS revised IS-73-1992specifications (Viscosity at 60°C) and as such there are four grades VG-10, VG-20, VG-30 & VG-40. A few qualification tests like specificgravity, water content, ductility, loss on heating &Farass breaking point were removed from IS:73-1992 as these tests do not have any relationship with the performance of the product.

[ Related Categories: Energy & Raw Materials, Petrochemical Products ]
[ Related Keywords: Bitumen Emulsion, Liquid Bitumen ]