Generally, each of these viscosity grade bitumen has different application according to the two important factors such as climate and traffic conditions. Read the article to understand the viscosity grade bitumen definition, applications and specifications. According to the IS, grading of Bitumen is changed from penetration grade to viscosity grade in 2006. Viscosity Grade bitumen is determined by IS 73, ASTM and AASHTO.

To know more about VGвЂ™s specification and comparison of the properties of grades, see the table at the end of the article. The higher the number, the harder the bitumen in the viscosity grading system. Viscosity test on bitumen results the classification of bitumen in a range of grades, including VG10 Bitumen, VG20 Bitumen, VG30 Bitumen, and VG40 Bitumen. The difference between penetration grade bitumen and viscosity grade bitumen is that the penetration grade classification is based on the Penetration value in 25 в—¦ C, while VG system is based on Viscosity value in both 60 в—¦ C and 135 в—¦ C that shows it is suitable for both low and high temperature so the bitumen behavior in different thermal conditions can be predicted well.Д¬heck out the bitumen penetration test and viscosity test of bitumen articles for more information about these two grading systems.Д¬lassification of Viscosity Grade Bitumen What is the difference between penetration grade bitumen and viscosity grade bitumen?

Viscosity of air at 20 c