A bitumen sample has been graded as VG30 as per IS : 73-2013

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A bitumen sample has been graded as VG30 as per IS : 73-2013. The ‘30’ in the grade means that

[GATE CE 2018 Set 1]

A penetration of bitumen at 25oC is between 20 and 40

B viscosity of bitumen at 60oC is between 2400 and 3600 Poise

C ductility of bitumen at 27oC is more than 30 cm

D elastic recovery of bitumen at 15oC is more than 30%