Viscosity Grade Bitumen VG-40

Viscosity Grade Bitumen (Asphalt) is a Bitumen grade mostly used as a Paving Grade and it’s suitable for road construction and for the asphalt pavements producing with premier attributes. VG Bitumen is usually used in the production of hot mix asphalt .VG-40 is used in highly stressed areas such as intersections, near toll booths and truck parking lots instead of 30/40 penetration grade. Because of higher viscosity, stiffer Bitumen mixes can be produced to amend resistance to shoving and other problems related to higher temperature and heavy traffic loads.


Characteristics VG-10 VG-20 VG-30 VG-40
Kinematic Viscosity, 135˚C, CST, min 800 1600 2400 3200
Flashpoint, C, min 250 300 350 400
Flashpoint, C, min 220 220 220 220
Solubility in trichloroethylene, %, min 99.0 99.0 99.0 99.0
Penetration at 25˚C 80-100 60-80 50-70 40-60
Softening point, C, min 40 45 47 50
Tests on residue from thin film over test / RTFOT
I. Viscosity ratio at 60˚C, max 4.0 4.0 4.0 4.0
II. Ductility at 25˚C, cm, min 75 50 40 25


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