VISCOSITY GRADE BITUMEN – WHAT ARE THE TYPES AND THEIR SPECIFICATIONS?

What are the types of VG Bitumen

As per IS:73-2006, bitumen is classified into four types on the basis of viscosity, as given below.

What are the viscosity grade bitumen-types and their requirements?
What are the viscosity grade bitumen-types and their requirements?

What are the requirements for paving bitumen (VG bitumen)

Properties

Paving Grade or Viscosity Grade Bitumen Requirements

VG-10

VG-20

VG-30

VG-40
60. at full viscosity0c, poise, min

800

1600

2400

3200
135. kinetic viscosity on0c, cst, min

250

300

350

400
Flash Point, (Cleveland Open Cup), 0c, min

220

220

 220

220
Solubility in trichlorethylene,%, min

99.0

99.0

99.0

99.0
25. logging on0C

80-100

60-80

50-70

40-60
Melting point, 0c, min

40

45

47

50
Thin Film Oven Testing / Testing on Residues from RTFOT
  1. 60. Viscosity Ratio on0C, Max

4.0

4.0

4.0

4.0
  1. 25. flexibility on0C, cm, min, after thin film oven test

75

50

40

25

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Er. Mukesh Kumar

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Er. Mukesh Kumar is Editor in Chief and Co-Funder at ProCivilEngineer.com Civil Engineering Website. Mukesh Kumar is a Bachelor in Civil Engineering From MIT. He has work experience in Highway Construction, Bridge Construction, Railway Steel Girder work, Under box culvert construction, Retaining wall construction. He was a lecturer in a Engineering college for more than 6 years.