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.

VISCOSITY GRADE (VG) BITUMEN SPECIFICATION 

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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