Vigor Me Fzc

Vigor Me Fzc

United Arab Emirates

Viscosity Grade Bitumen


Viscosity Grade Bitumen

There are two methods of grading:
Standard Viscosity Grade Bitumen (AC-Grades), in which the Viscosity of the standard bitumen (asphalt) is measured at 60 ºC (140 ºF).
RTFOT Viscosity Grade Bitumen (AR-Grades), in which the Viscosity of bitumen (asphalt) is measured at 60 °C (140 °F) after the roll on thin film oven test.

Viscosity grade bitumens have a thermoplastic property which causes the material to soften at high temperatures and to harden at lower temperatures. This unique temperature/ viscosity relationship is important when determining the performance parameters such as the adhesion, rheology, durability and application temperatures of bitumen. In the Viscosity Graded Bitumen specifications further special emphasizes is placed on the Bitumen ductility.




VISCOSITY GRADE BITUMEN SPECIFICATION
PROPERTY UNITS VG-10 VG-20 VG-30 VG-40 TEST METHODS
Penetration at 25°C, 100g, 5sec, Min 0.1MM 80 60 45 35 IS 1203
Absolute viscosity at 60°C P 800-1200 1600-2400 2400-3600 3200-4800 IS 1206 (Part 2)
Kinematic viscosity at 135°C, Min cSt 250 300 350 400 IS 1206 (Part 3)
Flash point (Cleveland open cup), Min °C 220 220 220 220 IS 1448 [P : 69]
Solubility in trichloroethylene, Min %Wt 99 99 99 99 IS 1216
Softening point (R&B), Min °C 40 45 47 50 IS 1205
Tests on residue from thin film oven test:            
- Viscosity ratio at 60°C, Max   4 4 4 4 IS 1206 (Part 2)
- Ductility at 25°C, Min CM 75 50 40 25 IS 1208


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Contact Details

Ms. Rupa Alamelu

P.O BOX – 49012, SHARJAH HAMARIYAH FREE ZONE – U.A.E, Sharjah, , United Arab Emirates

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