Question: $1$ Polymer Modified Binders

$[20$marks$]$

Carry out an extensive literature study and briefly describe the following three polymers used in

bitumen:

EVA

SBR

SBS

Compile a synthesis of your findings on the three based on the following aspects:

Chemical composition of the binder, variations in composition, compatibility with different

bitumen types and rheology of the polymer modified bitumen

Resistance to permanent deformation resistance

Fatigue cracking behaviour

Durability of the binder with regard to performance properties $($ageing$,$ adhesion etc$)$

You will need multiple references $($don$\text{'}$t just focus on the notes or one reference$).$ You will also

need to compare the performance behaviour for the different modifiers and synthesize the

information $($don$\text{'}$t copy and paste!!$).$ Also use tables and figures $($that you prepare too$)$

Question: $2$ The rheology of bitumen

$[20$ marks$]$

The rheological properties of bitumen at a given temperature are determined by both the chemical

composition and the structure $-$ or physical arrangement.

Describe chemistry composition of bitumen and ageing characteristics in the help of graph

Discuss the difference in ageing behaviour of the bitumen in a cold mix, a half$-$warm mix

and a hot mix.

Give some graphical representations in time $($including process steps like, during

emulsification, mixing, transport, early service life, etcetera$).$