GATE Civil Engineering (CE) 2018 Shift 1 Solved Paper

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Question : 28 of 65

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A bitumen sample has been graded as VG30 as per IS :

73-2013

. The '

30^{'}

in the grade means that

penetration of bitumen at $25^{∘} {C}$ is between 20 and 40
viscosity of bitumen at $60^{∘} {C}$ is between 2400 and 3600 Poise
ductility of bitumen at $27^{∘} {C}$ is more than $30 {cm}$
elastic recovery of bitumen at $15^{∘} {C}$ is more than $30 \%$

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