Part $1(51=5$ marks$)$

i$)$ Bitumen tests as in IS:$73(2013)$: $\{($A$)$ Softening point test, $($B$)$ Kinematic viscosity, $($C$)$

Frass breaking point test$\}$ Pavement failure: transverse cracking, $(2)$ rutting, $(3)$

asphalt workability$\}.$ Which of the following options correctly relates the bitumen

tests with corresponding ravement performance?

$($a$)$ A$-1,$ B$-3,$ C$-2$;

$($b$)$ A$-2,$ B$-3,$ C$-1$;

$($c$)$ A$-3,$ B$-2,$ C$-1$;

$($d$)$ A$-1,$ B$-2,$ C$-3$

ii$)$ Consider the following statement with regards to the amplitude and duration of

vertical stress pulse on an element in a pavement when a wheel load moves on the

pavement surface. Which of the following statement$($s$)$ are true?

$($a$)$ Duration increases with an increase in the distance of the element from the

pavement surface

$($b$)$ Amplitude increases with the increase in the distance of the element from the

pavement surface

$($c$)$ Duration increases with an increase in the velocity of the wheel load

iii$)$ Which of the following mechanisms of ageing can be reversed by heating the

bitumen to temperatures around $60$ to $80C$;

$($a$)$ Oxidation; $($b$)$ Loss of volatiles; $($c$)$ Steric hardening; $($d$)$ All the above

iv$)$ Which of the following inequality is true with regards to Bulk Specific Gravity $($Gsb$),$

Apparent Specific Gravity $(G_{sa}),$ Effective Specific Gravity $(G_{se})$ of aggregates

$($a$)G_{sa}{G}_{se}{G}_{sb}$;

$($b$)G_{se}{G}_{sa}{G}_{sb}$;

$($c$)G_{se}{G}_{sb}{G}_{sa}$;

$($d$)G_{sa}{G}_{sb}{G}_{se}$

v$)$ Bitumen behavior: $\{($A$)$ Elastic; $($B$)$ Viscous $-$ non$-$Newtonian; $($C$)$ Viscous $-$

Newtonian; $($D$)$ Viscoelastic