Viscosity Grades Bitumen

Test Bis Method Specification
         VG10 VG20 VG30 VG40
 Absolute Viscosity at 60°C, Poises ASTMD-2171 Min.800 Min.1600 Min.2400 Min.3200
Kinematic Viscosity at 135°C, cSt ASTMD-2170 Min.250 Min.300 Min.350 Min.400
Flash point (Cleveland open cup)°C ASTMD-92 Min.220 Min.220 Min.220 Min.220
Silubility in trichloroethylene,% ASTMD-2040 Min.99 Min.99 Min.99 Min.99
Softening point (R & B), °C ASTMD-36 Min.40 Min.45 Min.47 Min.50
Penetration @ 25°C, 0.1 mm 100gm,5 sec ASTMD-5 80-100 60-80 50-70 40-60
Tests on Residue from Thin Film Oven Tests / RTFOT
Ι) Viscosity ratio at 60°C ASTMD-2171 Max.4.0 Max.4.0 Max.4.0 Max.4.0
ΙΙ) Ductility at 25°C, cm, after thin - film oven tests ASTMD-113 Min.75 Min.50 Min.40 Min.25
Specific gravity @ 27/27°C ASTMD-70 Min.0.99 Min.0.99 Min.0.99 Min.0.99